Comments by Member 12076824 (Top 59 by date)

Thanks for response and sorry for confusion. I was trying to insert row only if its not saved yet. It may be at the end or may be some where in the middle of some rows

I am trying to zoom selected part of image from usercontrol onto pictureBox. It works fine when scroll position is at the top part of the usercontrol, but when I try to scroll to bottom of the image it doesn't works as old coordinates gets assigned to current position of the usercontrol. When usercontrol's scroll position is at top co-orinates are (0,0), but when position is changed to bottom co-ordinaets remains(0,0) from the middle of the image

Thanks for reply Bill.Both are supposed to be 13, I will give that a try.

Image Panel I am using is user control that was created. It works similar to panel, I am trying if the user clicks certain section of the image in corresponding to the field for data entry. The complete section of image that was clicked by user(can be some area of rectangle) needs to be magnified and display either into the pictureBox or any other option.

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Data;
using System.Text;
using System.Windows.Forms;

namespace ImageMagnifier
{
public partial class ImagePanel : UserControl
{
public ImagePanel()
{
InitializeComponent();

// Set the value of the double-buffering style bits to true.
this.SetStyle(ControlStyles.AllPaintingInWmPaint |
ControlStyles.UserPaint | ControlStyles.ResizeRedraw |
ControlStyles.UserPaint | ControlStyles.DoubleBuffer, true);
}

int viewRectWidth, viewRectHeight; // view window width and height

float zoom = 1.0f;
public float Zoom
{
get { return zoom; }
set
{
if (value < 0.001f) value = 0.001f;
zoom = value;

displayScrollbar();
setScrollbarValues();
Invalidate();
}
}

Size canvasSize = new Size(60, 40);
public Size CanvasSize
{
get { return canvasSize; }
set
{
canvasSize = value;
displayScrollbar();
setScrollbarValues();
Invalidate();
}
}

Bitmap image;
public Bitmap Image
{
get { return image; }
set
{
image = value;
displayScrollbar();
setScrollbarValues();
Invalidate();
}
}
public string ImagePath { get; set; }
InterpolationMode interMode = InterpolationMode.HighQualityBilinear;
public InterpolationMode InterpolationMode
{
get{return interMode;}
set{interMode=value;}
}

protected override void OnLoad(EventArgs e)
{
displayScrollbar();
setScrollbarValues();
base.OnLoad(e);
}

protected override void OnResize(EventArgs e)
{
displayScrollbar();
setScrollbarValues();
base.OnResize(e);
}

protected override void OnPaint(PaintEventArgs e)
{
base.OnPaint(e);

//draw image
if(image!=null)
{
Rectangle srcRect,distRect;
Point pt=new Point((int)(hScrollBar1.Value/zoom),(int)(vScrollBar1.Value/zoom));//lynda added - 10
if (canvasSize.Width * zoom < viewRectWidth && canvasSize.Height * zoom < viewRectHeight)
srcRect = new Rectangle(0, 0, canvasSize.Width, canvasSize.Height); // view all image
else srcRect = new Rectangle(pt, new Size((int)(viewRectWidth / zoom), (int)(viewRectHeight / zoom))); // view a portion of image

distRect=new Rectangle((int)(-srcRect.Width/2),-srcRect.Height/2,srcRect.Width,srcRect.Height); // the center of apparent image is on origin

Matrix mx=new Matrix(); // create an identity matrix
mx.Scale(zoom,zoom); // zoom image lynda add *1.3f to vertical stretch
mx.Translate(viewRectWidth/2.0f,viewRectHeight/2.0f, MatrixOrder.Append); // move image to view window center

Graphics g=e.Graphics;
g.InterpolationMode=interMode;
g.Transform=mx;
g.DrawImage(image,distRect,srcRect, GraphicsUnit.Pixel);
}

}

Its a tif image that's loaded at comboBox selectIndex change event and its different image for every index changed( which is selected from the items listed in combobox from directory). I have single version of image, I am trying to magnify the area of the actual image when user clicks around particular area that will cover up entire section of that page like rectangle.

Thanks for reply. Sorry about that I thought I added tag. Its a windows app. I want to magnify part of the image that would be displayed on the PictureBox as zoomed area of that particular location user want to magnify

Thanks for reply. Sorry for confusion. I have image panel component to display images. I am looking for some event like imagepanel_click

Thanks Mike. I will give it a try and see if I can make it work.

Thanks for response. I appreciate your help. I am running into problem as it throws error parameter is not valid when I try to magnify area around rightmost corner of the image(Maybe if I can get way to display that part of the image on left rather than on right side) and magnified image disappears when scrolled down to rest of the image in picturebox. I am using split container to display picture box in one area and data fields in another area.

Rectangle R = new Rectangle(0, 0, 60000, 480);
Pen cpen = new Pen(Color.Black, 3);
Point mouseDownLoc;
public Form()
{
InitializeComponent();
//Rectangle screen = Screen.PrimaryScreen.WorkingArea;
//int w = Width >= screen.Width ? screen.Width : (screen.Width + Width) / 2;
//int h = Height >= screen.Height ? screen.Height : (screen.Height + Height) / 2;
//this.Location = new Point((screen.Width - w) / 2, (screen.Height - h) / 2);
//this.Size = new Size(w, h);
this.pictureBox2.MouseEnter += (sender, args) => this.pictureBox1.Show();
this.pictureBox2.MouseLeave += (sender, args) => this.pictureBox1.Hide();
this.pictureBox2.MouseMove += (sender, args) => DoMagnification();
}
private void DoMagnification()
{
try
{
//clean up after our last run
var oldImage = this.pictureBox1.BackgroundImage;
if (oldImage != null)
oldImage.Dispose();

var position = this.pictureBox2.PointToClient(Cursor.Position);
var pboxWidth = this.pictureBox1.Width / 2;
var pboxHeight = this.pictureBox1.Height / 2;

Bitmap image = new Bitmap(this.pictureBox2.Width, this.pictureBox2.Height);
// this.pictureBox2.DrawToBitmap(image, this.pictureBox2.Bounds);

// ensure we dont go out of bounds
Rectangle cloneRect = new Rectangle(Math.Max(position.X, 0), Math.Max(position.Y, 0), pboxWidth, pboxHeight);

if (cloneRect.Width + cloneRect.X > image.Width)
cloneRect.X -= (image.Width - cloneRect.Width);

if (cloneRect.Height + cloneRect.Y > image.Height)
cloneRect.Y -= (image.Height - cloneRect.Height);

System.Drawing.Imaging.PixelFormat format =
image.PixelFormat;
// Clone a portion of the Bitmap object.
Bitmap cloneBitmap = image.Clone(cloneRect, format);

// Draw the cloned portion of the Bitmap object.
using (var graphics = CreateGraphics())
graphics.DrawImage(cloneBitmap, 0, 0);
this.pictureBox1.BackgroundImage = cloneBitmap;
this.pictureBox1.BackgroundImageLayout = ImageLayout.Zoom;

this.pictureBox1.Location = OffsetByAFewPixels(position);
}
catch (Exception ex)
{
lblerror.Text = ex.Message;
}
}
private Point OffsetByAFewPixels(Point location)
{
return new Point(location.X + 100, location.Y + 100);
}

private void pictureBox2_MouseEnter(object sender, EventArgs e)
{
// splitContainer1.Panel1.Focus();
try
{
int fx = 0;
int fy = 0;
fx = this.ClientRectangle.Left;
fy = this.ClientRectangle.Top;
Point startpoint = pictureBox1.PointToScreen(new Point(0, 0));
Graphics G = this.CreateGraphics();
Point Position = new Point(fx + pictureBox1.Left, fy + pictureBox1.Top);
Bitmap screenGrab = new Bitmap(pictureBox2.Image.Width, pictureBox2.Image.Height, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
G = Graphics.FromImage(screenGrab);
G.CopyF

Thanks for response. I tried this looks like I am missing something that's failing to fill dataset. At this moment it returns no records in the dataset. SP gets me data at SQL Level

Sorry about that, It was by mistake I posted stored procedure in comment.

Thanks for updating that.

Thanks for response.

For ex: If I have some record with number 1234567890 that exists in database 4 times, once it was saved as original which gave it doc_seq_num as 1. Later record was amended 3 time now new doc_seq_num will be 4.

Now when I call stored procedure on button click, it should load the data from the database table. The record loaded would be the one with doc_seq_num= 4, not other 3.

Thanks I should have used else instead, as I have button needs to be enabled and image to be cleared.

Thanks Sinisa, this was helpful.

Thanks George, problem was with error-provider. I had to use separate error providers for !m..success and testedyear > current year.

Thanks for reply Goerge.

It woks fine with other parts except for checking year over 2015, it accepts all the years till 9999.

Debugger shows year is not correct, but it doesn't give error message I added as:

if (!m.Success || testedYear > CurrentYear)
{


//MessageBox.Show("Please check SFN format");
errorProvider1.SetError(txtsfn, "Please check SFN format");

txtsfn.Focus();
}

Thanks

I am sorry George, I asked question, but some one pointed out I am asking same question again, so I deleted that.

I added question, please have a look.
http://www.codeproject.com/Questions/1056517/Regex-expression-to-validate-textbox

Hi Goerge,

Sorry to bother you again.

I am trying to use same technique on click of a button, but I am facing issues with year greater than current year, Can you please have a look, if I missed something?

private static Regex exprNumber = new Regex(^(405|505)(?19[5-9][0-9]|[2-9][0-9]{3})[0-9]{6}$");

if (txtsfn.Text != "" && txtlrn.Text !="" && txtovrbn.Text != '' && txtovrts.Text != "" && txtfpfn.Text != "" && txtfpln.Text != "" && txtfpfn.Text.Length >= 2 && txtfpln.Text.Length >= 2 &&txtsfn.Text.Length == 13 && txtlrn.Text.Length == 13)
{
// m.Groups[year].Value will contain the year upon success
// and be empty if the match fails
Match m = exprNumber.Match(txtsfn.Text);
int testedYear = 0;
int.TryParse(m.Groups[year].Value, out testedYear);
int currentYear = DateTime.Now.Year;

if (!m.Success || testedYear > currentYear)
{

txtsfn.Focus(); // Set focus to the control that should be
}
}

Thanks.

Thanks for response Bill.

I am sorry my bad, I posted wrong code. I have GetFiles in foreach on a collection of directories mapped to fileInfo.

Basically my aim is just to have files from folder in comboBox1 to be populated in comboBox2( which are .tiff images), and after that it will be displayed in pictureBox.

Code looks fine, but I have question about

private Dictionary<string,> NameToDirInfo = new Dictionary<string,>();
it gives error as type expected, can you please help me with this?

I appreciate all your help.

Thanks for response, it gives error as " cannot convert type System.IO.DirectoryInfo to System.IO.FileInfo"

Any suggestions to amend this?

Thanks Matt, it's working fine.

("^(4|5)(?<year>19[5-9][0-9]|[2-9][0-9]{3})(0[1-9]|[1-5][0-9]|6[0-3]{2})[0-9]{6}$");

Thanks for response, for some reason in question <year> is missing.

Thanks for response I am trying something like 4201563000001

Thanks Bill I will look into that.

Thanks for response, I am trying to list all the files for selected folder from the comboBox1 into ComboBox2. I am doing that manually for each selected index.
I am trying to have some kind of loop for that.

Thank Goerge, I appreciate all your help.

Hi Goerge,

I need help with this regex expression.

I am trying to use below expression.

("^(4|5)(?<year>19[5-9][0-9]|[2-9][0-9]{3})(0[1-9]|1[0-9]|2[0-9]|3[0-9]|4[0-9]|5[0-9]|6[0-3]{2})[0-9]{6}$");

where textbox input starts with 4/5 followed by 4 digits for year and next 2 digits code 01 - 63. It works fine till 59 but gives error from 60 -63. Can you please have a look?

Thanks.

Thanks for the response, I will try this.

Thanks for response. That would be good option, but in my case multiple user should be able to work at the same time. So If user 1 starts working on batch1 that will be locked and other user will not be able to select same batch.

Thanks for all your help.

I am trying to lock selected item when user1 selects the item, so that user2 cannot select the same item that's being worked on.

Thanks.

Hi George,

Thanks for all your help. I was wondering is there way to restrict year to current year in regular expression and need not make changes to code for next year?

Thanks for all your help, your code works fine for me. As per requirement I cannot use regex. I was left with keypress or leave(either of one specifically leave if possible). I have question for last part, I was wondering If I want to start UID from 000001 as if it can't be 000000. Can you please help me with last part?

Thanks Geoge, I tested this worked fine.

thanks I will check that.

Is there any way to make sure it's validated till current year and at the same time compatible with next year and so on?

Thanks for response I will try this.

Code works fine for me, Thanks.

I agree I tried the leave part as you mentioned it works fine to verify length of textbox, but won't be of much help in my case. I will work with keypress event.

Thanks

I was also trying to implement same as user enters input and leaves the textbox, as if event is fired at textbox1_leave to verify user input with required format, can you please help me with that?

Thanks for response, I am not expert with regex and had been trying to avoid using regex. It gets somewhat complicated in my case.

Thanks for response, that's something I was looking for.

I will check this out, and ask you if I have any questions.

Thanks I missed that part. As per the requirement I had to opt for validation unfortunately.

Thanks for reply, I edited that part before posting

Thanks for reply, I am trying to use key press event here, as user enter 123 next 4 digits needs to be year ranging 1950-2015 and 6 digits.

I am trying to use array and divide that into parts but that was not working.

Can you please give more example or syntax for this?

I will really appreciate it.

Thanks.

Thanks for reply and suggestions.

I have same for update and that's working well in terms of having type or text before or after.

other changes didn't insert record as required.

Thanks, this is working fine

I was using wrong syntax, that's working fine now. Thanks

I was using regex for some of the simple text fields for alphabets and numbers only, so just tried to utilize same for this part. Thanks for the suggestion I will try this out.

Thanks for the suggestion I will try this.