[RESOLVED] Enter Key on Textfield

[Strider]

Hey there,

i have created a web form and on it are 3 read only textfields, 1 normal textfield and 4 buttons

When data is entered in the textfield i want to be able to call one of the buttons when they hit enter after typing in the data in the textfield.

How could i get this to work

[Nikhil Aggarwal]

C# Code:
Clicking enter in a textbox would normally call the default button on the page.
To override this you need to add some server side code

protected override void OnPreRender(EventArgs e)
{
     base.OnPreRender (e);
     TextBox1.Attributes.Add("onkeydown",string.Format("if(window.event.keyCode == 13) {{{0}.focus();}}",Button1.ClientID));
}

Private Sub Page_PreRender(ByVal sender As Object, ByVal e As System.EventArgs) Handles MyBase.PreRender
     TextBox1.Attributes.Add("onkeydown", String.Format("if(window.event.keyCode == 13) {{{0}.focus();}}", Button1.ClientID))
End Sub

Note: Dont forget to replace "TextBox1" with the name of your textbox and "Button1" with the name of the button you want to call.

[Strider]

whats the default button on the page.... could i even set this

that code worked great...

what exactly does the prerender event do

[Nikhil Aggarwal]

Forgive me for my incorrect use of terminology - but there is no such thing as a default button for the page.
However I've noticed a very intresting thing:
I took a blank page and added a text box to it. During runtime when I type something in the textbox and press "Enter" the page posts back.
Now I add a button to the page. Again during runtime the same thing happens.
Next I added a second text box to the page. Now when I press enter in any of the textboxes, the page posts back and the Click event of the Button is fired.
Now add a second button to the page. Pressing Enter in any of the textboxes still fires the click event of the first button but not for the second button.

Does anyone know why?