Custom Control is Spitting out it's name into the Source!

Question

No idea why but when I place my custom control in my .aspx page, it's rendering the ID out also. So Consequently, I'm writing out some JavaScript to the page also and right in the middle I get this name of my control so it's messing up my JavaScript.

So in my .aspx I have:

<pm:Car ID="ProductCar" runat="server"/>

And here's what starts to get rendered:

<script type="text/javascript">
var ctl00_mainContent_ProductCar
lastProductID;var ctl00_mainContent_ProductCar
carSize;
...

as you can see ctl00_mainContent_ProductCar is the ID and it's being rendered right after var so I end up with a lastProductID not found error in my JavaScript because the text ctl00_mainContent_ProductCa is in the way.

(updated)

    protected override void Render(HtmlTextWriter writer)
    {
        writer.Write(BuildCarJavaScript());
    }

simply outputs a bunch of JavaScript to the page. And nowhere in my JavaScript do I have it just outputting clientID by itself like I'm seeing.

In BuildCarJavaScript here is where I'm creating that code:

        carJavaScript.Append(@"<script type=""text/javascript"">" + "\r\n");
        carJavaScript.AppendFormat("var {0}lastProductID;", this.ClientID + "\r\n");
...

Answer 1

This is a problem with the control. How could anyone here help you without seeing how the control is written?

Answer 2

Not sure exactly what you expected. This line:

carJavaScript.AppendFormat("var {0}lastProductID;", this.ClientID + "\r\n");

Is going to produce exactly what you're seeing. I guess it might be better to ask; what did you want this to produce?