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Duplicated TemplateField in the derived control from GridView in the Design mode

Hi,

I am having problem with a derived class from GridView in which I added

an empty image in the itemTemplate. Basically what I am trying to do is

adding an image column with an arrow instead of a select button. It
built fine, but when I modified any of the attributes in teh designer
mode, it kept adding another column of the same one. I think the
problem is because I added the column in teh class constructor but I
tried adding in OnLoad, OnInit and OnPreRender. Nothing works. Can
anyone point me out here? I am attaching my code herewith.
public class ItsGridView : System.Web.UI.W ebControls.Grid View
{
public ItsGridView()
{
TemplateField tf = new TemplateField() ;
tf.ItemTemplate = new
GridViewImageTe mplate(DataCont rolRowType.Data Row);
tf.HeaderText = string.Empty;
this.Columns.In sert(0, tf);
}

}
Thank you in advance,

Sunny

Jul 14 '06 #1
0 956

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