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Old October 13th, 2006, 07:04 PM
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Default Programatically generating a "TextChanged" handler

Hi there,
I'm creating a number of tabs in a form, each of which contains a text box. As I don't know at design time how many tabs a user may configure in the app I create these programatically at run time.

The code for this is as follows:

            for (int i = 0; i < TabsR; i++)
            {
                TabPage myTabPage = new TabPage(TabTitles[i]);
                tabControl.TabPages.Add(myTabPage);
                tabControl.SelectedTab = myTabPage;
                myTabPage.Name = TabTitles[i].ToString();
                RichTextBox MyRTF = new System.Windows.Forms.RichTextBox();
                MyRTF.Dock = DockStyle.Fill;
                MyRTF.Name = "RTF" + i.ToString();
                MyRTF.Font = new Font(EncDec.NoteFont, 10, FontStyle.Regular);
                myTabPage.Controls.AddRange(new Control[] { MyRTF });
            }

My problem is that I have no way of tracking when the text in any of these text boxes changes; my question being how can I programatically create a "TextBox_TextChanged(object sender, EventArgs e)" event handler for when the change occurs?

Any help is greatly appreciated!

Kind regards,
John.
 
Old October 13th, 2006, 07:19 PM
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Default

You are trying to create a Method on the fly or just wire up the textboxes?

To wire up the textboxes you would do:
txt.TextChanged += New System.EventHandler(this.method);

To write a custom method on the fly, I don't think that can be done. You would be better off just writing a method that would handle all of your textboxes and just wire them all up to that.

hth

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Unless, of course, you want to hire me to do work for you.

^^Thats my signature
 
Old October 14th, 2006, 05:36 AM
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Default

Yes! that worked a treat and does exactly what I need.
The code I've got working now based on your suggestion is as follows:

  MyRTF.TextChanged += new System.EventHandler(MyTextChanged);

And then in a seperate method:

  private void MyTextChanged(object sender, System.EventArgs e)
  {
       RichTextBox MyRTF;
       MyRTF = (RichTextBox)sender;
       int a = Convert.ToInt16(MyRTF.Name.Substring(3,1));
       if (a == 0)
       {
           UserTab1Dirty = True; // can use this flag elsewhere to prompt save b4 quit.
       }
       ...
   }

Many thanks - it all works perfectly!

Kind regards,
John.





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