dynamically add controls

[passs]

Hi everybody!

Does anybody know how ca I add a web control dynamically in my asp.net page, for example Button. And I have a method which should be assigned to this button as a click handler.
I tried to do following: btn.click += new EventHandler(this.MyMethod); in onInit method of my page and then in Render method to add this button to my form. It apeared but click event didn't work.
So the problem is with dynamic event assigning.
Any ideas?

Thank you,
Alex

 

[DotNetGnat]

http://aspnet.4guysfromrolla.com/articles/081402-1.aspx

-DNG

 

[jbenson001]

Try:

Button btn = new Button(); 
btn.Click += new EventHandler(btn_Click); 
btn.ID = "Test"; 
btn.Text = "Test Button"; 
this.FindControl("Form1").Controls.Add(btn);

Event handler:

private void btn_Click(object sender, System.EventArgs e) 
{ 
 .. do stuff here ...

Jim

 

[passs]

Hi Guys,

Thank you for your help!
jbenson001, your code works perfect. And really I had the same code, but I added this button to my form in Render method and in this case event handler doesn't work. I cannot understand why. When this string of code in Page_Load:
this.FindControl("Form1").Controls.Add(btn); - everything works perfect, when in Render then clicking on this button I got nothing

Thank you!
Alex

 

[jbenson001]

I forgot to mention that any controls you add dynamically needs to be done in the Page_Init event. This is due to viewstate. You can google many examples and more in depth explination.

Jim

Glad you got it working...