C# Discussion Boards - CodeProject

Graham Nimbley9-Apr-06 14:46

9-Apr-06 14:46

I think you may have confused what is passed in through 'sender'. In this situation sender returns a reference to the control which received the key press. If you want to access the key which was sent, you can use e.KeyChar

Graham

UnActivate C# Form

Areff9-Apr-06 5:16

Areff

9-Apr-06 5:16

Hi,
I have tow form in my application and one button in Form1,
i want when button clicked Form2 be Show and Form1 be hide or UnActivate

---------------------
Areff Bahrami(KAVEH)
Areff.HB@Gmail.com
---------------------

Re: UnActivate C# Form

User 66589-Apr-06 7:19

User 6658

9-Apr-06 7:19

this.Hide();
Form2 f = new Form2();
f.ShowDialog();

regards

modified 12-Sep-18 21:01pm.

Form to Web Service

babamara9-Apr-06 4:42

babamara

9-Apr-06 4:42

Hi, all.
I want to convert this form to a web service but my knowladge is not enough. Please help.

using System;<br />
using System.Drawing;<br />
using System.Collections;<br />
using System.ComponentModel;<br />
using System.Windows.Forms;<br />
using System.Data;<br />
using System.Data.SqlClient;<br />
<br />
namespace AlbumViewer<br />
{<br />
	/// <summary><br />
	/// Summary description for Form1.<br />
	/// </summary><br />
	public class MainForm : System.Windows.Forms.Form<br />
	{<br />
		private System.Windows.Forms.PictureBox pictureBox;<br />
		private System.Windows.Forms.MainMenu mainMenu;<br />
		private System.Windows.Forms.MenuItem menuItem3;<br />
		private System.Windows.Forms.TreeView treeAlbum;<br />
		private System.Windows.Forms.MenuItem mnuFile;<br />
		private System.Windows.Forms.MenuItem mnuOpen;<br />
		private System.Windows.Forms.MenuItem mnuExit;<br />
		private System.Windows.Forms.MenuItem mnuOptions;<br />
		private System.Windows.Forms.MenuItem mnuSlideShow;<br />
		private System.Data.SqlClient.SqlConnection sqlConn;<br />
		<br />
		private System.Windows.Forms.OpenFileDialog FileOpenDlg;<br />
		private System.Windows.Forms.MenuItem mnuAddPhoto;<br />
		private System.Windows.Forms.MenuItem mnuRenameAlbum;<br />
		private System.Windows.Forms.MenuItem mnuDeleteAlbum;<br />
		private System.Windows.Forms.ContextMenu mnuPhotoPopup;<br />
		private System.Windows.Forms.MenuItem mnuRenamePhoto;<br />
		private System.Windows.Forms.MenuItem mnuDeletePhoto;<br />
		private System.Windows.Forms.ContextMenu mnuAlbumPopup;<br />
		private System.Windows.Forms.MenuItem mnuNewAlbum;<br />
		private System.Windows.Forms.TextBox txtDesc;<br />
		private System.Windows.Forms.Button btnUpdate;<br />
		private System.Windows.Forms.Label lblDesc;<br />
		private System.Windows.Forms.MenuItem mnuEditDesc;<br />
		private System.Windows.Forms.MenuItem mnuAlbumEdit;<br />
		private System.Windows.Forms.MenuItem mnuPhotoEdit;<br />
		private System.Windows.Forms.ContextMenu mnuImage;<br />
		private System.Windows.Forms.MenuItem menuItem1;<br />
		private System.Windows.Forms.MenuItem menuItem2;<br />
<br />
		/// <summary><br />
		/// Required designer variable.<br />
		/// </summary><br />
		private System.ComponentModel.Container components = null;<br />
<br />
		/// <summary><br />
		/// The main entry point for the application.<br />
		/// </summary><br />
		[STAThread]<br />
		static void Main() <br />
		{<br />
			Application.Run(new MainForm());<br />
		}<br />
<br />
<br />
		public MainForm()<br />
		{<br />
			//<br />
			// Required for Windows Form Designer support<br />
			//<br />
			InitializeComponent();<br />
			<br />
			// Initaliaze the tree control<br />
			LoadTree();<br />
		}<br />
<br />
<br />
		/// <summary><br />
		/// Clean up any resources being used.<br />
		/// </summary><br />
		protected override void Dispose( bool disposing )<br />
		{<br />
			if( disposing )<br />
			{<br />
				if (components != null) <br />
				{<br />
					components.Dispose();<br />
				}<br />
			}<br />
			base.Dispose( disposing );<br />
		}<br />
<br />
<br />
		private void MainForm_Closing(object sender, System.ComponentModel.CancelEventArgs e)<br />
		{<br />
			// Close connection before we leave<br />
			if(sqlConn.State == ConnectionState.Open)<br />
				sqlConn.Close();<br />
		}<br />
<br />
<br />
		/// <summary><br />
		/// This method queries the database to obtain all album and photos<br />
		/// then inserts the records into the tree  control<br />
		/// </summary><br />
		private void LoadTree()<br />
		{<br />
			try<br />
			{<br />
				// Start with clear tree<br />
				treeAlbum.Nodes.Clear();<br />
<br />
				// If the connection is closed, open it.<br />
				if(sqlConn.State == ConnectionState.Closed)<br />
					sqlConn.Open();<br />
<br />
				// Just to be sure make sure it was opened <br />
				if(sqlConn.State == ConnectionState.Open)<br />
				{<br />
					// Create the stored proc command to retrieve the records<br />
					SqlCommand sqlCmd = new SqlCommand("sp_GetPhotoAlbums", sqlConn);<br />
					sqlCmd.CommandType = CommandType.StoredProcedure;<br />
<br />
					// Now execute the command<br />
					SqlDataReader sqlPhotoAlbum = sqlCmd.ExecuteReader();<br />
					<br />
					int nAlbumID = 0;		// Keep track of the current album<br />
					int nAlbumIndex = -1;	// Keep track of the tree index<br />
<br />
					// Keep reading all the records returned<br />
					while( sqlPhotoAlbum.Read() )<br />
					{<br />
						// Check if a new album needs to be added to the tree<br />
						if( nAlbumID != (int)sqlPhotoAlbum["AlbumID"] )<br />
						{<br />
							// Insert a new album<br />
							InsertAlbum(sqlPhotoAlbum["Album"].ToString(), (int)sqlPhotoAlbum["AlbumID"], sqlPhotoAlbum["Album_Desc"].ToString());<br />
							nAlbumID = (int)sqlPhotoAlbum["AlbumID"];<br />
							nAlbumIndex++;<br />
						}<br />
						// Insert the photo in the tree under the current album<br />
						InsertPhoto(nAlbumIndex, sqlPhotoAlbum["Photo"].ToString(), (int)sqlPhotoAlbum["PhotoID"], sqlPhotoAlbum["Photo_Desc"].ToString());<br />
					}<br />
					// We are finished with this for now so close it<br />
					sqlPhotoAlbum.Close();<br />
				}<br />
			}<br />
			catch(SqlException e)<br />
			{<br />
				MessageBox.Show(e.Message);<br />
			}<br />
		}<br />
<br />
<br />
		/// <summary><br />
		/// This method will inset an album into the tree<br />
		/// </summary><br />
		/// <param name="strName">Album name</param><br />
		/// <param name="nAlbum">DB index of album</param><br />
		/// <param name="strDesc">Description of album</param><br />
		private void InsertAlbum(string strName, int nAlbum, string strDesc)<br />
		{<br />
			try<br />
			{<br />
				// Create a new treenode<br />
				TreeNode node = new TreeNode(strName);<br />
				// Create new treeitem to store the info about this album<br />
				node.Tag = new TreeItem(ItemType.Album, nAlbum, strDesc);<br />
 <br />
				// Add the node into the tree<br />
				treeAlbum.Nodes.Add(node);	<br />
			}<br />
			catch(Exception e)<br />
			{<br />
				MessageBox.Show(e.Message);<br />
			}<br />
		}<br />
		<br />
<br />
		/// <summary><br />
		/// This method will insert a photo into the tree under the specified album<br />
		/// </summary><br />
		/// <param name="nAlbum">Tree index of album</param><br />
		/// <param name="strName">Name of photo</param><br />
		/// <param name="nPhoto">DB index of photo</param><br />
		/// <param name="strDesc">Description of photo</param><br />
		private void InsertPhoto(int nAlbum, string strName, int nPhoto, string strDesc)<br />
		{<br />
			try<br />
			{<br />
				// Create a new treenode<br />
				TreeNode node = new TreeNode(strName);<br />
				// Create new treeitem to store the info about this photo<br />
				node.Tag = new TreeItem(ItemType.Photo, nPhoto, strDesc);;<br />
				<br />
				// Add the node to the tree under the specified album<br />
				treeAlbum.Nodes[nAlbum].Nodes.Add(node);<br />
			}<br />
			catch(Exception e)<br />
			{<br />
				MessageBox.Show(e.Message);<br />
			}<br />
		}<br />
<br />
<br />
		/// <summary><br />
		/// This method will insert a phot into the database under the<br />
		/// designated album<br />
		/// </summary><br />
		/// <param name="buffer">The images bytes</param><br />
		/// <param name="strName">Name of the photo</param><br />
		/// <param name="nAlbum">DB index of album</param><br />
		private void InsertImage(ref byte[] buffer, string strName, int nAlbum)<br />
		{<br />
			try<br />
			{<br />
				// Create a stored procedure command<br />
				SqlCommand cmd = new SqlCommand("sp_InsertPhoto", sqlConn);<br />
				cmd.CommandType = CommandType.StoredProcedure;<br />
<br />
				// Add the return value parameter<br />
				SqlParameter param = cmd.Parameters.Add("RETURN_VALUE", SqlDbType.Int);<br />
				param.Direction = ParameterDirection.ReturnValue;<br />
				<br />
				// Add the name paramter and set the value<br />
				cmd.Parameters.Add("@name", SqlDbType.VarChar).Value = strName;<br />
				// Add the image paramter and set the value<br />
				cmd.Parameters.Add("@image", SqlDbType.Image).Value = buffer;<br />
				// Add the album paramter and set the value<br />
				cmd.Parameters.Add("@album", SqlDbType.Int).Value = nAlbum;<br />
<br />
				// Execute the insert<br />
				cmd.ExecuteNonQuery();<br />
				<br />
				// Return value will be the index of the newly added photo<br />
				int nID = (int)cmd.Parameters["RETURN_VALUE"].Value;<br />
				<br />
				// Create a new node<br />
				TreeNode node = new TreeNode(strName);<br />
				// Create new treeitem to store the info about this photo<br />
				node.Tag = new TreeItem(ItemType.Photo, nID, "Enter description");;<br />
				<br />
				// Get the index of the album we are adding to<br />
				// and insert the new photo node<br />
				nID = treeAlbum.SelectedNode.Index;<br />
				treeAlbum.Nodes[nID].Nodes.Add(node);<br />
			}<br />
			catch(Exception e)<br />
			{<br />
				MessageBox.Show(e.Message);<br />
			}<br />
		}<br />
<br />
<br />
		#region Main menu handlers<br />
<br />
		/// <summary><br />
		/// Exit menu handler<br />
		/// </summary><br />
		private void OnExit(object sender, System.EventArgs e)<br />
		{<br />
			Close();<br />
		}<br />
<br />
<br />
		/// <summary><br />
		/// New album menu handler<br />
		/// </summary><br />
		private void OnNewAlbum(object sender, System.EventArgs e)<br />
		{<br />
			try<br />
			{<br />
				// Create a stored procedure command<br />
				SqlCommand cmd = new SqlCommand("sp_NewAlbum", sqlConn);<br />
				cmd.CommandType = CommandType.StoredProcedure;<br />
<br />
				// Add the return value parameter<br />
				SqlParameter param = cmd.Parameters.Add("RETURN_VALUE", SqlDbType.Int);<br />
				param.Direction = ParameterDirection.ReturnValue;<br />
				<br />
				// Add the name parameter and set the value<br />
				cmd.Parameters.Add("@name", SqlDbType.VarChar).Value = "New Album";<br />
				<br />
				// Execute the command<br />
				cmd.ExecuteNonQuery();<br />
				<br />
				// The return value is the index of the newly added album<br />
				int nID = (int)cmd.Parameters["RETURN_VALUE"].Value;<br />
<br />
				// Create a new tree node and add it to the treeview<br />
				TreeNode node = new TreeNode("New Album");<br />
				node.Tag = new TreeItem(ItemType.Album, nID, "Enter description"); <br />
				treeAlbum.Nodes.Add(node);	<br />
			}<br />
			catch(Exception ex)<br />
			{<br />
				MessageBox.Show(ex.Message);<br />
			}		<br />
		}<br />
	<br />
		#endregion<br />
<br />
		#region Treeview handlers<br />
<br />
		/// <summary><br />
		/// Tree control mouse up handler<br />
		/// </summary><br />
		private void OnMouseUp(object sender, System.Windows.Forms.MouseEventArgs e)<br />
		{<br />
			// We are only interested in right mouse clicks<br />
			if( e.Button == MouseButtons.Right )<br />
			{<br />
				// Attempt to get the node the mouse clicked on<br />
				TreeNode node = treeAlbum.GetNodeAt(e.X, e.Y);<br />
				if(node != null)<br />
				{	<br />
					// Select the tree item<br />
					treeAlbum.SelectedNode = node;<br />
<br />
					TreeItem item = (TreeItem)node.Tag;<br />
					// Check what type of node was clicked and display the <br />
					// context menu for that type<br />
					if( ItemType.Album == item.Type )<br />
						mnuAlbumPopup.Show(treeAlbum, new Point(e.X, e.Y));	<br />
					else if( ItemType.Photo == item.Type )<br />
						mnuPhotoPopup.Show(treeAlbum, new Point(e.X, e.Y));	<br />
				}<br />
			}<br />
		}<br />
		<br />
<br />
		/// <summary><br />
		/// Tree control select handler<br />
		/// </summary><br />
		private void OnAfterSelect(object sender, System.Windows.Forms.TreeViewEventArgs e)<br />
		{<br />
			try<br />
			{<br />
				// Disable edit controls if we were in edit mode<br />
				if( true == btnUpdate.Visible )<br />
				{<br />
					btnUpdate.Visible = false;<br />
					txtDesc.Visible = false;<br />
					lblDesc.Visible = true;<br />
				}<br />
<br />
				// Retrieve the item info for this node<br />
				TreeItem item = (TreeItem)e.Node.Tag;<br />
					<br />
				// If the selected item is an album...<br />
				if( ItemType.Album == item.Type )<br />
				{<br />
					lblDesc.Text = item.Desc; // Set the description<br />
					pictureBox.Image = null;  // Clear the image<br />
					return;<br />
				}<br />
<br />
				// ...otherwise it is a photo<br />
				ShowPhoto(item);<br />
			}<br />
			catch(Exception ex)<br />
			{<br />
				MessageBox.Show(ex.Message);<br />
			}<br />
		}<br />
<br />
		/// <summary><br />
		/// Treeview label edit handler<br />
		/// </summary><br />
		private void OnAfterLabelEdit(object sender, System.Windows.Forms.NodeLabelEditEventArgs e)<br />
		{<br />
			try<br />
			{<br />
				// Retrieve item from the selected node<br />
				TreeItem item = (TreeItem)treeAlbum.SelectedNode.Tag;<br />
<br />
				// Check what type has been edited and create a command string to update name<br />
				string strCmd;<br />
				if( ItemType.Album == item.Type )<br />
					strCmd = String.Format("UPDATE Albums SET name = '{0}' WHERE id = {1}", e.Label, item.Id);<br />
				else<br />
					strCmd = String.Format("UPDATE Photos SET name = '{0}' WHERE id = {1}", e.Label, item.Id);<br />
				<br />
				// Create a SqlCommand and execute it<br />
				SqlCommand cmd = new SqlCommand(strCmd, sqlConn);<br />
				cmd.ExecuteNonQuery();<br />
			}<br />
			catch(Exception ex)<br />
			{<br />
				MessageBox.Show(ex.Message);<br />
			}		<br />
		}<br />
<br />
<br />
		/// <summary><br />
		/// Treeview key up handler<br />
		/// </summary><br />
		private void OnKeyUp(object sender, System.Windows.Forms.KeyEventArgs e)<br />
		{<br />
			// Handle the usual rename key<br />
			if( Keys.F2 == e.KeyCode )<br />
				treeAlbum.SelectedNode.BeginEdit();<br />
		}<br />
<br />
		#endregion<br />
<br />
		#region Context menu handlers<br />
		/// <summary><br />
		/// Album rename menu handler<br />
		/// </summary><br />
		private void OnRename(object sender, System.EventArgs e)<br />
		{<br />
			// Not much to do, just let the node handle itself<br />
			treeAlbum.SelectedNode.BeginEdit();<br />
		}<br />
<br />
<br />
		/// <summary><br />
		/// Add Photo menu item handler<br />
		/// </summary><br />
		private void OnAddPhoto(object sender, System.EventArgs e)<br />
		{<br />
			// Show the file open dialog<br />
			if( DialogResult.OK == FileOpenDlg.ShowDialog() )<br />
			{<br />
				// Retrieve the treeitem for the selected parent node<br />
				TreeItem item = (TreeItem)treeAlbum.SelectedNode.Tag;<br />
				<br />
				// We allow multiple selections so loop through each one<br />
				foreach( string file in FileOpenDlg.FileNames )<br />
				{<br />
					// Create a new stream to load this photo into<br />
					System.IO.FileStream stream = new System.IO.FileStream(file, System.IO.FileMode.Open, System.IO.FileAccess.Read);<br />
					// Create a buffer to hold the stream bytes<br />
					byte[] buffer = new byte[stream.Length];<br />
					// Read the bytes from this stream<br />
					stream.Read(buffer, 0, (int)stream.Length);<br />
					// Now we can close the stream<br />
					stream.Close();<br />
<br />
					// Extract out the name of the file an use it for the name<br />
					// of the photo<br />
					string strName = System.IO.Path.GetFileNameWithoutExtension(file);<br />
<br />
					// Insert the image into the database and add it to the tree<br />
					InsertImage(ref buffer, strName, item.Id);<br />
					buffer = null;<br />
				}<br />
				// Select the last child node under this album<br />
				treeAlbum.SelectedNode = treeAlbum.SelectedNode.LastNode;<br />
			}<br />
		}<br />
<br />
		/// <summary><br />
		/// Delete menu handler<br />
		/// </summary><br />
		private void OnDelete(object sender, System.EventArgs e)<br />
		{<br />
			try<br />
			{<br />
				// Retrieve the item from the selected node<br />
				TreeItem item = (TreeItem)treeAlbum.SelectedNode.Tag;<br />
				<br />
				// Get the index of the selected node<br />
				int nIndex = treeAlbum.SelectedNode.Index;<br />
<br />
				// Check the type of node selected and create a command sting<br />
				string strCmd;<br />
				if( ItemType.Album == item.Type )<br />
					strCmd = String.Format("DELETE FROM Albums WHERE id = {0}", item.Id);<br />
				else<br />
					strCmd = String.Format("DELETE FROM Photos WHERE id = {0}", item.Id);<br />
				<br />
				// Create and execute a command<br />
				SqlCommand cmd = new SqlCommand(strCmd, sqlConn);<br />
				cmd.ExecuteNonQuery();<br />
				<br />
				// Check the type of item that was deleted<br />
				TreeNode node = null;<br />
				switch(item.Type)<br />
				{<br />
					case ItemType.Photo:<br />
						// Get the next node or the previous node if there is none<br />
						node = treeAlbum.SelectedNode.NextNode;<br />
						if( null == node )<br />
							node = treeAlbum.SelectedNode.PrevNode;<br />
					<br />
						// Check if there was a previous node<br />
						// if not we need to get the parent<br />
						if( null == node )<br />
							node = treeAlbum.SelectedNode.Parent;<br />
<br />
						// Remove the selected node from the tree<br />
						treeAlbum.Nodes[treeAlbum.SelectedNode.Parent.Index].Nodes.RemoveAt(nIndex);<br />
						break;<br />
<br />
					case ItemType.Album:<br />
						node = treeAlbum.SelectedNode.NextNode;<br />
						if( null == node )<br />
							node = treeAlbum.SelectedNode.PrevNode;<br />
						<br />
						// This was an ablum node so remove any photos displayed<br />
						pictureBox.Image = null;<br />
<br />
						// Remove the selected node from the tree<br />
						treeAlbum.Nodes.RemoveAt(nIndex);<br />
						break;<br />
				}<br />
<br />
				// Now select the node<br />
				if( null != node )<br />
					treeAlbum.SelectedNode = node;<br />
			}<br />
			catch(Exception ex)<br />
			{<br />
				MessageBox.Show(ex.Message);<br />
			}		<br />
		}<br />
		<br />
<br />
		/// <summary><br />
		/// Edit menu handler<br />
		/// </summary><br />
		private void OnEditDesc(object sender, System.EventArgs e)<br />
		{<br />
			// Toggle the edit controls<br />
			btnUpdate.Visible = true;<br />
			txtDesc.Visible = true;<br />
			lblDesc.Visible = false;<br />
<br />
			// Update the edit text box<br />
			txtDesc.Text = lblDesc.Text;<br />
		}<br />
<br />
		#endregion<br />
<br />
		private void ShowPhoto(TreeItem item)<br />
		{<br />
			try<br />
			{<br />
				// Create a command to select the selected photo<br />
				string strCmd = String.Format("SELECT photo FROM Photos WHERE id = {0}", item.Id);<br />
				SqlCommand cmd = new SqlCommand(strCmd, sqlConn);<br />
								<br />
				// Set the description<br />
				lblDesc.Text = item.Desc;<br />
<br />
				// Get bytes return from stored proc<br />
				byte[] b = (byte[])cmd.ExecuteScalar();<br />
				if(b.Length > 0)<br />
				{<br />
					// Open a stream for the image and write the bytes into it<br />
					System.IO.MemoryStream stream = new System.IO.MemoryStream(b, true);<br />
					stream.Write(b, 0, b.Length);<br />
					<br />
					// Draw photo to scale of picturebox<br />
					DrawToScale(new Bitmap(stream));<br />
				<br />
					// Close the stream and delete the temp file<br />
					stream.Close();<br />
				}<br />
			}<br />
			catch(Exception e)<br />
			{<br />
				MessageBox.Show(e.Message);<br />
			}<br />
		}<br />
<br />
		/// <summary><br />
		/// Update button handler<br />
		/// </summary><br />
		private void OnUpdate(object sender, System.EventArgs e)<br />
		{<br />
			try<br />
			{<br />
				// Retreive the item from the selected node<br />
				TreeItem item = (TreeItem)treeAlbum.SelectedNode.Tag;<br />
<br />
				// Check the type and create an command string<br />
				string strCmd;<br />
				if( ItemType.Album == item.Type )<br />
					strCmd = String.Format("UPDATE Albums SET [desc] = '{0}' WHERE id = {1}", txtDesc.Text, item.Id);<br />
				else<br />
					strCmd = String.Format("UPDATE Photos SET [desc] = '{0}' WHERE id = {1}", txtDesc.Text, item.Id);<br />
				<br />
				// Create a command and execute the update<br />
				SqlCommand cmd = new SqlCommand(strCmd, sqlConn);<br />
				cmd.ExecuteNonQuery();<br />
				<br />
				// Update the node item<br />
				item.Desc = txtDesc.Text;<br />
<br />
				// Update the text label<br />
				lblDesc.Text = txtDesc.Text;<br />
<br />
				// Toggle the edit controls<br />
				btnUpdate.Visible = false;<br />
				txtDesc.Visible = false;<br />
				lblDesc.Visible = true;<br />
			}<br />
			catch(Exception ex)<br />
			{<br />
				MessageBox.Show(ex.Message);<br />
			}		<br />
		}<br />
<br />
		/// <summary><br />
		/// This function will determine the scale the image should be rendered<br />
		/// at from the size of the picture box and image<br />
		/// </summary><br />
		/// <param name="bmp">Image to scale and assign to picture box</param><br />
		private void DrawToScale(Image bmp)<br />
		{<br />
			// The client rectangle<br />
			Rectangle rc = pictureBox.ClientRectangle;<br />
<br />
			// From Programming Windows with C#, by Charles Petzold<br />
			// Figure out the scaling necessary for the image<br />
			SizeF size = new SizeF( bmp.Width / bmp.HorizontalResolution, bmp.Height / bmp.VerticalResolution);<br />
			float fScale = Math.Min( rc.Width / size.Width, rc.Height / size.Height);<br />
<br />
			size.Width *= fScale;<br />
			size.Height *= fScale;<br />
<br />
			// Create a new bitmap of the proper size for the existing bitmap<br />
			// and assign it to the picture box<br />
			pictureBox.Image = new Bitmap(bmp, size.ToSize());<br />
		}<br />
<br />
		#region Windows Form Designer generated code<br />
		/// <summary><br />
		/// Required method for Designer support - do not modify<br />
		/// the contents of this method with the code editor.<br />
		/// </summary><br />
		private void InitializeComponent()<br />
		{<br />
			this.treeAlbum = new System.Windows.Forms.TreeView();<br />
			this.mnuAlbumPopup = new System.Windows.Forms.ContextMenu();<br />
			this.mnuAddPhoto = new System.Windows.Forms.MenuItem();<br />
			this.mnuAlbumEdit = new System.Windows.Forms.MenuItem();<br />
			this.mnuRenameAlbum = new System.Windows.Forms.MenuItem();<br />
			this.mnuDeleteAlbum = new System.Windows.Forms.MenuItem();<br />
			this.pictureBox = new System.Windows.Forms.PictureBox();<br />
			this.mnuImage = new System.Windows.Forms.ContextMenu();<br />
			this.menuItem1 = new System.Windows.Forms.MenuItem();<br />
			this.menuItem2 = new System.Windows.Forms.MenuItem();<br />
			this.mainMenu = new System.Windows.Forms.MainMenu();<br />
			this.mnuFile = new System.Windows.Forms.MenuItem();<br />
			this.mnuOpen = new System.Windows.Forms.MenuItem();<br />
			this.mnuNewAlbum = new System.Windows.Forms.MenuItem();<br />
			this.menuItem3 = new System.Windows.Forms.MenuItem();<br />
			this.mnuExit = new System.Windows.Forms.MenuItem();<br />
			this.mnuOptions = new System.Windows.Forms.MenuItem();<br />
			this.mnuSlideShow = new System.Windows.Forms.MenuItem();<br />
			this.mnuEditDesc = new System.Windows.Forms.MenuItem();<br />
			this.sqlConn = new System.Data.SqlClient.SqlConnection();<br />
			this.FileOpenDlg = new System.Windows.Forms.OpenFileDialog();<br />
			this.mnuPhotoPopup = new System.Windows.Forms.ContextMenu();<br />
			this.mnuRenamePhoto = new System.Windows.Forms.MenuItem();<br />
			this.mnuPhotoEdit = new System.Windows.Forms.MenuItem();<br />
			this.mnuDeletePhoto = new System.Windows.Forms.MenuItem();<br />
			this.txtDesc = new System.Windows.Forms.TextBox();<br />
			this.btnUpdate = new System.Windows.Forms.Button();<br />
			this.lblDesc = new System.Windows.Forms.Label();<br />
			this.SuspendLayout();<br />
			// <br />
			// treeAlbum<br />
			// <br />
			this.treeAlbum.ImageIndex = -1;<br />
			this.treeAlbum.LabelEdit = true;<br />
			this.treeAlbum.Name = "treeAlbum";<br />
			this.treeAlbum.SelectedImageIndex = -1;<br />
			this.treeAlbum.Size = new System.Drawing.Size(224, 504);<br />
			this.treeAlbum.TabIndex = 0;<br />
			this.treeAlbum.MouseUp += new System.Windows.Forms.MouseEventHandler(this.OnMouseUp);<br />
			this.treeAlbum.KeyUp += new System.Windows.Forms.KeyEventHandler(this.OnKeyUp);<br />
			this.treeAlbum.AfterSelect += new System.Windows.Forms.TreeViewEventHandler(this.OnAfterSelect);<br />
			this.treeAlbum.AfterLabelEdit += new System.Windows.Forms.NodeLabelEditEventHandler(this.OnAfterLabelEdit);<br />
			// <br />
			// mnuAlbumPopup<br />
			// <br />
			this.mnuAlbumPopup.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {<br />
																						  this.mnuAddPhoto,<br />
																						  this.mnuAlbumEdit,<br />
																						  this.mnuRenameAlbum,<br />
																						  this.mnuDeleteAlbum});<br />
			// <br />
			// mnuAddPhoto<br />
			// <br />
			this.mnuAddPhoto.Index = 0;<br />
			this.mnuAddPhoto.Text = "Add Photo";<br />
			this.mnuAddPhoto.Click += new System.EventHandler(this.OnAddPhoto);<br />
			// <br />
			// mnuAlbumEdit<br />
			// <br />
			this.mnuAlbumEdit.Index = 1;<br />
			this.mnuAlbumEdit.Text = "Edit Description";<br />
			this.mnuAlbumEdit.Click += new System.EventHandler(this.OnEditDesc);<br />
			// <br />
			// mnuRenameAlbum<br />
			// <br />
			this.mnuRenameAlbum.Index = 2;<br />
			this.mnuRenameAlbum.Text = "Rename";<br />
			this.mnuRenameAlbum.Click += new System.EventHandler(this.OnRename);<br />
			// <br />
			// mnuDeleteAlbum<br />
			// <br />
			this.mnuDeleteAlbum.Index = 3;<br />
			this.mnuDeleteAlbum.Text = "Delete";<br />
			this.mnuDeleteAlbum.Click += new System.EventHandler(this.OnDelete);<br />
			// <br />
			// pictureBox<br />
			// <br />
			this.pictureBox.ContextMenu = this.mnuImage;<br />
			this.pictureBox.Location = new System.Drawing.Point(232, 0);<br />
			this.pictureBox.Name = "pictureBox";<br />
			this.pictureBox.Size = new System.Drawing.Size(500, 300);<br />
			this.pictureBox.TabIndex = 1;<br />
			this.pictureBox.TabStop = false;<br />
			// <br />
			// mnuImage<br />
			// <br />
			this.mnuImage.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {<br />
																					 this.menuItem1,<br />
																					 this.menuItem2});<br />
			// <br />
			// menuItem1<br />
			// <br />
			this.menuItem1.Index = 0;<br />
			this.menuItem1.Text = "Rotate Left 90";<br />
			this.menuItem1.Click += new System.EventHandler(this.OnRotateLeft);<br />
			// <br />
			// menuItem2<br />
			// <br />
			this.menuItem2.Index = 1;<br />
			this.menuItem2.Text = "Rotate Right 90";<br />
			this.menuItem2.Click += new System.EventHandler(this.OnRotateRight);<br />
			// <br />
			// mainMenu<br />
			// <br />
			this.mainMenu.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {<br />
																					 this.mnuFile,<br />
																					 this.mnuOptions});<br />
			// <br />
			// mnuFile<br />
			// <br />
			this.mnuFile.Index = 0;<br />
			this.mnuFile.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {<br />
																					this.mnuOpen,<br />
																					this.mnuNewAlbum,<br />
																					this.menuItem3,<br />
																					this.mnuExit});<br />
			this.mnuFile.Text = "File";<br />
			// <br />
			// mnuOpen<br />
			// <br />
			this.mnuOpen.Index = 0;<br />
			this.mnuOpen.Text = "Open";<br />
			// <br />
			// mnuNewAlbum<br />
			// <br />
			this.mnuNewAlbum.Index = 1;<br />
			this.mnuNewAlbum.Text = "New Album";<br />
			this.mnuNewAlbum.Click += new System.EventHandler(this.OnNewAlbum);<br />
			// <br />
			// menuItem3<br />
			// <br />
			this.menuItem3.Index = 2;<br />
			this.menuItem3.Text = "-";<br />
			// <br />
			// mnuExit<br />
			// <br />
			this.mnuExit.Index = 3;<br />
			this.mnuExit.Text = "E&xit";<br />
			this.mnuExit.Click += new System.EventHandler(this.OnExit);<br />
			// <br />
			// mnuOptions<br />
			// <br />
			this.mnuOptions.Index = 1;<br />
			this.mnuOptions.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {<br />
																					   this.mnuSlideShow,<br />
																					   this.mnuEditDesc});<br />
			this.mnuOptions.Text = "Options";<br />
			// <br />
			// mnuSlideShow<br />
			// <br />
			this.mnuSlideShow.Index = 0;<br />
			this.mnuSlideShow.Text = "Slide Show";<br />
			// <br />
			// mnuEditDesc<br />
			// <br />
			this.mnuEditDesc.Index = 1;<br />
			this.mnuEditDesc.Text = "Edit Description";<br />
			this.mnuEditDesc.Click += new System.EventHandler(this.OnEditDesc);<br />
			// <br />
			// sqlConn<br />
			// <br />
			this.sqlConn.ConnectionString = "data source=HOMESVR;initial catalog=Photos;integrated security=SSPI;persist secur" +<br />
				"ity info=False;workstation id=DAD;packet size=4096";<br />
			// <br />
			// FileOpenDlg<br />
			// <br />
			this.FileOpenDlg.Filter = "Gif files|*.gif|Jpeg Files|*.jpg;*.jpeg|Bmp Files|*.bmp";<br />
			this.FileOpenDlg.Multiselect = true;<br />
			this.FileOpenDlg.Title = "Select Photos";<br />
			// <br />
			// mnuPhotoPopup<br />
			// <br />
			this.mnuPhotoPopup.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {<br />
																						  this.mnuRenamePhoto,<br />
																						  this.mnuPhotoEdit,<br />
																						  this.mnuDeletePhoto});<br />
			// <br />
			// mnuRenamePhoto<br />
			// <br />
			this.mnuRenamePhoto.Index = 0;<br />
			this.mnuRenamePhoto.Text = "Rename";<br />
			this.mnuRenamePhoto.Click += new System.EventHandler(this.OnRename);<br />
			// <br />
			// mnuPhotoEdit<br />
			// <br />
			this.mnuPhotoEdit.Index = 1;<br />
			this.mnuPhotoEdit.Text = "Edit Description";<br />
			this.mnuPhotoEdit.Click += new System.EventHandler(this.OnEditDesc);<br />
			// <br />
			// mnuDeletePhoto<br />
			// <br />
			this.mnuDeletePhoto.Index = 2;<br />
			this.mnuDeletePhoto.Text = "Delete";<br />
			this.mnuDeletePhoto.Click += new System.EventHandler(this.OnDelete);<br />
			// <br />
			// txtDesc<br />
			// <br />
			this.txtDesc.Location = new System.Drawing.Point(232, 312);<br />
			this.txtDesc.MaxLength = 200;<br />
			this.txtDesc.Multiline = true;<br />
			this.txtDesc.Name = "txtDesc";<br />
			this.txtDesc.Size = new System.Drawing.Size(504, 112);<br />
			this.txtDesc.TabIndex = 2;<br />
			this.txtDesc.Text = "";<br />
			this.txtDesc.Visible = false;<br />
			// <br />
			// btnUpdate<br />
			// <br />
			this.btnUpdate.Location = new System.Drawing.Point(656, 432);<br />
			this.btnUpdate.Name = "btnUpdate";<br />
			this.btnUpdate.TabIndex = 3;<br />
			this.btnUpdate.Text = "Update";<br />
			this.btnUpdate.Visible = false;<br />
			this.btnUpdate.Click += new System.EventHandler(this.OnUpdate);<br />
			// <br />
			// lblDesc<br />
			// <br />
			this.lblDesc.Location = new System.Drawing.Point(232, 312);<br />
			this.lblDesc.Name = "lblDesc";<br />
			this.lblDesc.Size = new System.Drawing.Size(504, 112);<br />
			this.lblDesc.TabIndex = 4;<br />
			// <br />
			// MainForm<br />
			// <br />
			this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);<br />
			this.ClientSize = new System.Drawing.Size(792, 566);<br />
			this.Controls.AddRange(new System.Windows.Forms.Control[] {<br />
																		  this.lblDesc,<br />
																		  this.btnUpdate,<br />
																		  this.txtDesc,<br />
																		  this.pictureBox,<br />
																		  this.treeAlbum});<br />
			this.Menu = this.mainMenu;<br />
			this.Name = "MainForm";<br />
			this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;<br />
			this.Text = "Album Viewer";<br />
			this.Closing += new System.ComponentModel.CancelEventHandler(this.MainForm_Closing);<br />
			this.ResumeLayout(false);<br />
<br />
		}<br />
		#endregion<br />
<br />
		#region PictureBox context menu handlers<br />
		/// <summary><br />
		/// Rotate left menu handler<br />
		/// </summary><br />
		private void OnRotateLeft(object sender, System.EventArgs e)<br />
		{<br />
			try<br />
			{<br />
				Image img = pictureBox.Image;<br />
				img.RotateFlip(RotateFlipType.Rotate270FlipNone);<br />
				DrawToScale(img);<br />
			}<br />
			catch(Exception ex)<br />
			{<br />
				MessageBox.Show(ex.Message);<br />
			}<br />
		}<br />
<br />
		/// <summary><br />
		/// Rotate right menu handler<br />
		/// </summary><br />
		private void OnRotateRight(object sender, System.EventArgs e)<br />
		{<br />
			try<br />
			{<br />
				Image img = pictureBox.Image;<br />
				img.RotateFlip(RotateFlipType.Rotate90FlipNone);<br />
				DrawToScale(img);<br />
			}<br />
			catch(Exception ex)<br />
			{<br />
				MessageBox.Show(ex.Message);<br />
			}<br />
		}<br />
		<br />
		#endregion<br />
	}<br />
}

Re: Form to Web Service

babamara9-Apr-06 4:44

babamara

9-Apr-06 4:44

Is there some convertor or good article which can help me.

Reflection

rmedo9-Apr-06 4:29

rmedo

9-Apr-06 4:29

Hi all,
I want to make component that have two public methods, One that reflects the public exposed methods and classes of any selected .NET component and another that is passed all necessary parameters to run another method in another .Net component and return the ruselt to the caller.

I hope any one can help me,

Thanks

Re: Reflection

Guffa9-Apr-06 5:32

Guffa

9-Apr-06 5:32

In order for someone to help you, you have to tell what you need help with.

Make a component? Create methods? Make methods public? Using reflection? Return a result?

---
b { font-weight: normal; }

Re: Reflection

rmedo10-Apr-06 22:26

rmedo

10-Apr-06 22:26

I want to know how to make com component, how to use reflection and hoe to return result through reflection.
Thanks for help

ShowDialog Help

rikkemus9-Apr-06 0:29

rikkemus

9-Apr-06 0:29

Im making a window with 3 fields that needs to be filled out. Im using it as a modal window.
2 buttons for OK and Cancel.

If the User presses OK, i want to inform him, he hasnt filled out all fields, if thats the case. And then keep the window open.

The question is, how do i suppress the form from closing, when not every field is filled out.

Thx in advance.

Re: ShowDialog Help

WillemM9-Apr-06 2:45

WillemM

9-Apr-06 2:45

Don't fill in the DialogResult property of the Ok button, but set the dialogresult of the dialog using the eventhandler of the Ok button.

private void okButton_Click(object sender,EventArgs e) {
  if(textField1.Text != "") {
    DialogResult = DialogResult.OK;
  }
}

Simple as that, if the textfield isn't filled, the dialogbox won't close.
You can modify this to show a messagebox with the exact error.

WM.

What about weapons of mass-construction?

Re: ShowDialog Help

CWIZO9-Apr-06 2:47

CWIZO

9-Apr-06 2:47

Write a event hanlder for the Closing event.
Inthere you check if the user has filled all the values and if he his not you set the Cancel property of the argument e to true:

e.Cancel = true;

--------------------------------------------------------
My development blog
Q:What does the derived class in C# tell to it's parent?
A:All your base are belong to us!

Re: ShowDialog Help

Ravi Bhavnani9-Apr-06 5:16

Ravi Bhavnani

9-Apr-06 5:16

Imho, this is best done using the ErrorProvider[^] component. It's a nice alternative to displaying a message box.

/ravi

My new year's resolution: 2048 x 1536
Home | Music | Articles | Freeware | Trips
ravib(at)ravib(dot)com

Xml question

eggie58-Apr-06 15:13

eggie5

8-Apr-06 15:13

So I want to call the xpath function count(papers/id) on an XmlNode.

I try to call SelectSingleNode, but that throws an exception because count doesn't find xml nodes, it returns how many nodes there are.

How can I use the xpath count function on an XmlNode???

/\ |_ E X E GG

Re: Xml question

Jakob Farian Krarup9-Apr-06 6:23

Jakob Farian Krarup

9-Apr-06 6:23

Why not use the SelectNodes function to get a set of nodes, and then use the Count property to see how many are returned?

int noOfIdNodes = theNode.SelectNodes("papers/id").Count

Kind regards - Jakob

Three kinds of people in the world:
- Those who can count..
- Those who can't!

Re: Xml question

eggie59-Apr-06 9:42

eggie5

9-Apr-06 9:42

yeahm this what I eventually figured out, thanks.

/\ |_ E X E GG

how to get errors number in sqlserver from C#

superdragon8-Apr-06 14:28

superdragon

8-Apr-06 14:28

in some cases i want to get the errors number from sqlServer in C#, but i dont know how to do it.
please show me the way to catch it.
Thanks alot.

superdragon

Re: how to get errors number in sqlserver from C#

Sean898-Apr-06 16:03

Sean89

8-Apr-06 16:03

try
{
// Do stuff...
}
catch (SqlException ex)
{
// you can get the error number from the ErrorCode property:
int errorCode = ex.ErrorCode;
}

Is that what you needed Confused | :confused:

Re: how to get errors number in sqlserver from C#

superdragon9-Apr-06 18:36

superdragon

9-Apr-06 18:36

Thanks for your helpings. Now i can catch it with your instruction

superdragon

Plz Help me with these two problems !!!

mrkeivan8-Apr-06 9:06

mrkeivan

8-Apr-06 9:06

hey guys whats up ? I have two questions that be glad if you can help me out.

1- I'm using this code to write make an xml file and move the results of my report to that file
DataSet.WriteXml(FileName, System.Data.XmlWriteMode.IgnoreSchema);
How can I change the header text in that file, is it something that can be done within a C# application ? if yes please tell me how ?!

2- About two weeks ago i posetd a thread that I got some helpful responds but still couldn't pull it off !?
I have two forms, in the first one I have a number that gets a value and i want to use it in the second form, can you please write me the code ?

Form 1

public int number;<br />
number = convert.toint32(number.text);

Form 2
Message.show(number.tostring());

Thanx very much
Mr.K

Re: Plz Help me with these two problems !!!

Ed.Poore8-Apr-06 9:14

Ed.Poore

8-Apr-06 9:14

I think you will have to reload the Xml file into something like the System.Xml.XmlDocument class and then perform the changes from there, resaving the changes
Try using number = int.Parse(number.Text);

Re: Plz Help me with these two problems !!!

mrkeivan8-Apr-06 10:23

mrkeivan

8-Apr-06 10:23

well the thing is that I need to declare some kind of public method, because when I call Form1 f = new Form1(); the value for number would be erased !!!
how can I declare a public method for that ?

Mr.K

Re: Plz Help me with these two problems !!!

Guffa8-Apr-06 11:08

Guffa

8-Apr-06 11:08

No, it's not being erased. You are creating a completely new form, so of course it won't contain the same data as the already existing form.

You just have to access the form that you already have instead of creating a new one.

---
b { font-weight: normal; }

Re: Plz Help me with these two problems !!!

Ed.Poore8-Apr-06 12:20

Ed.Poore

8-Apr-06 12:20

mrkeivan wrote:
public method

property...

mrkeivan wrote:
how can I declare a public method for that ?

private Form1 f = new Form1();
public Form1 Form
{
  get
  {
    return this.f;
  }
}

Now when you access the property, use it like this:

MessageBox.Show(this.Form.number.ToString());

Re: Plz Help me with these two problems !!!

mrkeivan8-Apr-06 18:04

mrkeivan

8-Apr-06 18:04

OK this code should be in my first form as a property, right ?
public Form1 Form{ get { return this.f; }}
can you please explain alittle more ?

Thanx

Re: Plz Help me with these two problems !!!

Ed.Poore8-Apr-06 21:44

Ed.Poore

8-Apr-06 21:44

mrkeivan wrote:
OK this code should be in my first form as a property, right ?

This code should be in the form which you are using to display the value, i.e. not the one with the property you're trying to access.

private Form1 f = new Form1();
public Form1 Form {
  get {
    return this.f;
  }
}

This is a property definition, it defines a property called Form with type Form1 (i.e. your form). You cannot have a variable inside the get {...} construct otherwise it will be re-initialised everytime you access the property. Hence the private Form1 f declaration outside the property definition, this only creates a Form1 object once when the variable is initialised and then you can access this variable through the Form property (to get the number property you want.

NB: If you are doing the following:
One form (the "master" form) is in control of displaying the second ("input") and you want the master form to display the number property of the input form then you can do the following which is slightly simpler:

public class MasterForm : Form {
  private Form1 inputForm = new Form1();

  // This is just an example function, you'd put the code from here
  // into you're event handler / whatever function you use to display
  // the code.
  public void DisplayNumber() {
    MessageBox.Show(this.inputForm.number.ToString());
  }
}

This code ensures that by having the variable declared as global to the functions etc inside the MasterForm, the second Form1 is only created once.

Ed

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.