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Damn, i can't understand, in my app it doesn't show nothing.
My code looks like this:
<br />
public class MyTextBox : TextBox<br />
{<br />
public override string ToString()<br />
{<br />
return Text;<br />
}<br />
}<br />
public partial class Form1 : Form<br />
{<br />
public Form1()<br />
{<br />
InitializeComponent();<br />
MyTextBox x = new MyTextBox();<br />
x.Text = "aaa";<br />
listBox1.Items.Add(x);<br />
}<br />
}<br />
My listbox is blank after this.. If it would show "aaa", now all i would have to do is add an validating event and my job is finished. I'm doing something wrong?
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How many textboxes are there ? if more than one,
which one is shown on the form (i.e. added to Form.Controls)?
and which one is given some text?
[EDIT]
Sorry, that would be wrong I think.
Did you try a listbox1.Invalidate() ?
I am afraid changing a control inside a ListBox might not cause a repaint,
I don't expect it to react as a Container...
[/EDIT]
-- modified at 7:53 Friday 24th August, 2007
-- modified at 7:54 Friday 24th August, 2007
Luc Pattyn [Forum Guidelines] [My Articles]
this weeks tips:
- make Visual display line numbers: Tools/Options/TextEditor/...
- show exceptions with ToString() to see all information
- before you ask a question here, search CodeProject, then Google
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Well i find out how many there are at runtime.
Let me tell you exactly what I want. I have an directory servers wich contains a lot of dirs (I find out how many at runtime). All I want from them to add to the listbox is their names. I don't necessarly want a listbox, but I tought of a listbox because it looks good. The client needs to change between this dirs but I don't want to let him do that if some settings are changed(I wan't to ask him if he wants to change them). So I just want to validate what is in that listbox. If I add them to the listbox as objects, thei don't have a validating and focus. If I add them as controls, they have what I need but they loose their aspect, because it doesn't draw them like it would do for strings (for strings it looks exactly like I want)
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Hi,
AFAIK the items in a listbox don't fire any events, so putting a textbox in there
does not result in TextChanged or whatever event since the textbox is not part of
your Form.Controls or ListBox.Controls
As I said before, you can choose what kind of objects you add to a ListBox.
If you are not happy by the text that gets shows, simply override the object's ToString()
method.
Two questions:
What is it the user must do when he has selected an item ?
Did you try the Invalidate() I suggested?
Luc Pattyn [Forum Guidelines] [My Articles]
this weeks tips:
- make Visual display line numbers: Tools/Options/TextEditor/...
- show exceptions with ToString() to see all information
- before you ask a question here, search CodeProject, then Google
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The user sees settings for each individual server, when he chooses one. But if he changes this settings, i don't want to loose the last servers settings, so i want to ask him if he wants to save them.
I did override the tostring() method and i still don;t see nothing on screen, but the items are there, since the listbox lets me choose from them.
I repeat, i don't know if i choosen the right control(listbox), I just wan't the client to see a lot of names( server names) and if he chooses one of them, he can change server settings. If I add the controls to the form directly, i loose a lot of support(scroll suport if there are many servers, and when i choose one of them it doesn't look as good as it would in a listbox)
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I would add a few buttons (Save, DontSave,Revert), all disabled initially.
When a server gets selected, show its settings.
As soon as a setting is changed:
- enable those buttons
- diasble the chooser control (ListBox, ComboBox, whatever)
Now:
- Save would save the settings
- DontSave would not save the settings
- Revert would restore the original settings
and each of them would then go back to the original state: chooser enabled, buttons
disabled.
And yes I would prefer a ComboBox over a ListBox in this approach.
Luc Pattyn [Forum Guidelines] [My Articles]
this weeks tips:
- make Visual display line numbers: Tools/Options/TextEditor/...
- show exceptions with ToString() to see all information
- before you ask a question here, search CodeProject, then Google
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When I click on a cell in the datagridview, i want to get the data in that ROW and pass it as a parameter list to a secondary form.
and fill it with that row's data. Can anyone help I have no idea how to do this.
the steps will be:
1. click on a cell in a row
2. get the data in the row
3. click an update buotton on the current form
4. second form will open with card.ShowDialog() in the update-click event
5. the row's data must now appear on the card form(second form).
Thanks alot!!!
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You need to catch CellClick event and extract index of row which contains the clicked cell from the parameter the event gets. Then you will be able to get all the data from that row
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I am doing a project which need to differentiate word file from two other office documents,but I don't know the special character's distribution in word file ,Does word file have its special characters of tag ?
Who have a good idea,please tell me ,thack you.
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Hello!I`m trying to connect data from a specific data field in my database to a TextBox, by using the SELECT statement, which should allow the user to enter the IDNumber of the concrete set of data in one TextBox and then, by clicking on a button, to get the concrete data in another TextBox.
E.G.
TextBoxID - there you are entering the IDNumber of the concrete set of data
TextBoxCompany - returns the name of the company under that IDNumber, after clicking the button
I would be most grateful to anybody who would be kind enough to help me.Thanks in advance!
Virtual
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You basically want to write SQL, or a stored proc, that takes the number and returns the company name. Then you can set the text of the textbox to what you want. There is no automated way to do this. Ideally, you'd write the SQL code in a data layer, which you then call to get back the string you want, but if it's a quick and nasty app, you can probably get away with putting it all in one place. Just remember that many quick and nasty apps, turn into major undertakings, I always prefer to architect everything well from the start.
I assume you know how to write SQL and call the database, and were just hoping for an automagic way to do this ?
Christian Graus - Microsoft MVP - C++
"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )
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can anyone help me with this please.
thank you.
it is in visual studio 2005
public void OKbutton_Click(object sender, EventArgs e)
{
SqlConnection mySqlConnection = new SqlConnection("server=ISS\\SQLEXPRESS;database=Staff;uid=sa;pwd=xbcprfly");
mySqlConnection.Open();
SqlDataAdapter mySqlDataAdapter = new SqlDataAdapter("SELECT Lastname, Firstname, TelephoneExtension FROM Staff ORDER BY Lastname",mySqlConnection);
DataSet myDataSet = new DataSet();
string insertQuery = "insert into Staff values (LastnameTextBox.Text,FirstnameTextBox.Text,TelExtTextBox.Text)";
//mySqlDataAdapter.SelectCommand = new SqlCommand(insertQuery, mySqlConnection);
mySqlDataAdapter.InsertCommand = new SqlCommand(insertQuery, mySqlConnection);
SqlParameter workParam = null;
workParam = mySqlDataAdapter.InsertCommand.Parameters.Add(LastnameTextBox.Text, SqlDbType.NVarChar, 80, "Lastname");
workParam = mySqlDataAdapter.InsertCommand.Parameters.Add(FirstnameTextBox.Text, SqlDbType.NVarChar, 80, "Firstname");
workParam = mySqlDataAdapter.InsertCommand.Parameters.Add(TelExtTextBox.Text, SqlDbType.NVarChar, 50, "TelephoneExtension");
//SqlCommandBuilder mySqlCommandBuilder = new SqlCommandBuilder(mySqlDataAdapter);
//mySqlDataAdapter.Fill(myDataSet, "Staff");
//mySqlDataAdapter.UpdateCommand = "Staff";
mySqlDataAdapter.TableMappings.Add("Staff", "Staff");
try
{
mySqlDataAdapter.Update(myDataSet, "Staff");
//int noOfRowsDs = mySqlDataAdapter.Fill(myDataSet, "Staff");
Application.DoEvents();
MessageBox.Show("data set updated");
}
catch (Exception f)
{
MessageBox.Show(f.ToString());
}
//SqlCommand cmd = new SqlCommand(cmdStr, con);
//cmd.ExecuteNonQuery();
this.Close();
}
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This code is totally messed up!! There are quite a lot of errors, seems to me like your missing the basics here? find some articles on CP or MSDN that explains them plz then start working. Thanks
for a startup use this URL in your MSDN
ms-help://MS.MSDNQTR.v80.en/MS.MSDN.v80/MS.VisualStudio.v80.en/dv_raddata/html/15a88fb8-3bee-4962-914d-7a1f8bd40ec4.htm
Rocky
You can't climb up a ladder with your hands in your pockets.
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Hi ,
I`ve got a basic doubt about WinForms ...
Is it possible to create a form that has no client-area at all , but only a menubar that stretches across the entire width of the screen ?
The method i tried was to set the client area property of the form to (ScreenWidth,0) but it doesn`t work (a little strip of the client-area in grey is still visible below the menubar).
If its not possible to do so,is there some basic concept here which i`ve missed out on ?
Thanks in Advance
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If you change the fromBorderStyle to None you will only have the menu bar left.
Hope that helps.
Ben
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Hi Ben ,
Many thanks for replying ! I created a simple Form with a Menu & set the FormBorderStyle to None so this removes the scroll bars, system control box,min/max/close button etc...
But a grey area (which i think is the client area ) still persists just below the menubar.
I`ve tried working with the form height, size,clientarea and autoscalebasesize too , none of which works 
An alternative way i found was to override CreateParams and fiddle around with the WS_BORDER,WS_CAPTION values but again , the grey bar issue remains.
I`ll be grateful if any1 can tell me a way in which i can make a BMP of this available (since i dont think images can be embedded in posts ) coz it`ll give a clearer idea of what exactly is going on
Hoping the CP wizards can help me out here !
thanks !
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There is just one more thing to do. In the form properties set the BackColor to something like Red. Then in the form properties set the TransparentcyKey to something like Red as well. It doesn't matter what color you pick as long as these two properties are the same. That will cause the line to go away.
Hope that helps.
Ben
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Hi Ben,
it works like a charm ! many thanks for ur help 
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I'm working on a WinForms app which talks to a webservice. With an Ajax app you'd use an "updating" gif, which would disappear once everything had completed - I was wondering if anyone knows of a preferred/standard approach when dealing with WinForms?
"It was the day before today.... I remember it like it was yesterday."
-Moleman
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If the updating via the web service is going to take a long time ie keep the user waiting, then ideally you should do the update on a different thread from that of the UI. In VS 2005 you can use the BackgroundWorker control for this purpose.
A quick and dirty solution would be to lock down the UI and use a PictureBox control to display the 'updating' gif as in Ajax or alternatively use a ProgressBar.
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I made a Dialog and I put it on a Tab (WTL)
And I found out so if I press TAB so pass a Button the program get stuck....
Somebody nows what the problem?
Thanks in advance
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Hi guys,
i really need some starting advice for a gui ive got in mind.
I need a grid of "data cells" ( in which ill be able to draw text and images into. Cells should be able to automatically resize to its content. Cells are arranged
logically in rows and i must be able to add and delete rows of corresponding cells at runtime. Cells shall also be able to handle a mouseover events and be clickable (left and right, scroll etc.)
They whole gui shall also be able to be resizeable. Scrollbars shall appear if parent window is noth big enough to show all rows of cells.
To get an impression what i want here is an protptype screenshot:
http://img100.imageshack.us/my.php?image=ssjr2.jpg
Many thanks
Michael
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Input "grid" into searchbox above and click the button "Go!"
Greetings - Gajatko
Portable.NET is part of DotGNU, a project to build a complete Free Software replacement for .NET - a system that truly belongs to the developers.
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Hi Guys and Gals.
I need urgent help with a Setup I am doing. The problem is I have an App.config file where all my connection information is stored. I am using a generic class that reference this config file. The problem is when I run my setup and trying to run the exe and try to log into my database I cant. Yes, I did change the referencing of my files to the location where my db's are stored. I can run the application from within .NET, but not as an exe.
Please help. My deadline is today. Your help will be greatly appreciated.
Regards,
Elizma
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Elizma wrote: need urgent help
That doesn't motivate people to drop what they are doing and help. It is rude around here.
Elizma wrote: My deadline is today.
Wow, two months since you posted this message and no reply.
"Real programmers just throw a bunch of 1s and 0s at the computer to see what sticks" - Pete O'Hanlon
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