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8/15/2007 8:23 AM:  Client JavaScript and .NET Server Controls

GibbsUSA.net smilie: grim The new .NET model renames the server controls dynamically, giving them a unique ID. See below for an example.

The following is the control on the ASPX page designer:
<asp:CheckBox id=chkBInfo runat=server checked=true/>

This is rendered to the client in HTML as:
<input id="ctl00_ContentPlaceHolder1_chkBInfo" type="checkbox" name="ctl00$ContentPlaceHolder1$chkBInfo" checked="checked" />

As you can see, the controls name cannot be determined easily...or can it???

Well, so long as your JavaScript remains on the same ASPX page, you can get the control using "ClientID":
function theForm_onSubmit(){

        if (document.forms(0).<%=chkBInfo.ClientID%>.checked==false)

        {

            alert('Please select a Message Type...');

            return false;

        }

}

Hope this helps!!! GibbsUSA.net smilie: coolguy

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8/14/2007 11:16 AM:  Add a CSS header dynamically...

GibbsUSA.net smilie: smile With the increased use of Master pages etc, I had the need to add the CSS stylesheet dynamically depending on the situation.

Putting the following code in the Page_Load event of the individual page solved the problem:



 // add the stylesheet..

 HtmlHead myHeader = (HtmlHead)this.Page.Header;

 if (theHeader != null)

 {

   HtmlLink myCSS = new HtmlLink();

   myCSS.Attributes.Add("href", "admin/td_codes.css");

   myCSS.Attributes.Add("rel", "stylesheet");

   myCSS.Attributes.Add("type", "text/css");

   theHeader.Controls.Add(myCSS); 

 }


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