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Unable to find control with id

Posted By:      Posted Date: October 06, 2010    Points: 0   Category :ASP.Net


I write a webcontrol with a label and a textbox

I use the AssoiactedControlId property to link the textbox to the label
See the Render method below :

protected override void RenderContents(HtmlTextWriter output)
	HtmlGenericControl hgcDiv = new HtmlGenericControl("div");

	TextBox tbNumberLot = new TextBox();	
	tbNumberLot.ID = "tbNumberLot";

 	Label lNumberLot = new Label();
	lNumberLot.ID = "lNumberLot";
	lNumberLot.AssociatedControlID = tbNumberLot.ID;



this throw an exception :"Unable to find control with id 'tbNumberlot' that is associated with the label &#

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