Wednesday, December 28, 2005

 

Set Focus Using Javascript and C#

I ran into some trouble trying to get a Textbox on a User Control to have the cursor in it by default. I tried several Javascript tricks but nothing worked.

I finally tried adding the Javascript to the page through the code behind file using C# to see if that would help, and it did.

Here is the code I used:



        protected override void OnPreRender(EventArgs e)
        {
            base.OnPreRender(e);

            //Setfocus script
            if ((username != null) &&
                     (!this.IsStartupScriptRegistered("SetControlFocus")))
                this.RegisterStartupScript(
                    "SetControlFocus",
                    string.Format("<script language='JavaScript'>document" +
                                  ".getElementById('{0}').focus();</script>",
                                  username.ClientID));
        }

# posted by Tod Birdsall, MCSD for .NET @ 2:28 PM  
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