e.Row.Cell adding control does not work

I have a code:

 protected void gvContacts_RowDatabound(object sender, GridViewRowEventArgs e)
    {       

    Label label = new Label();
    label.Text = "tes开发者_开发问答t";        

    if (e.Row.RowType == DataControlRowType.DataRow && e.Row.RowIndex == 0)
    {
        for (int i = 0; i < e.Row.Cells.Count; i++)
        {
            e.Row.Cells[i].Controls.Add(label);  //doesnt work
            e.Row.Cells[i].Text = "this works";

        }
    }
}

where label does not appear to my cells. What's wrong?

You need create a new instance of your label in each loop

for (int i = 0; i < e.Row.Cells.Count; i++)
{
   label = new Label();
   label.Text = "test";
   e.Row.Cells[i].Controls.Add(label);
   e.Row.Cells[i].Text = "this works";
}

First things first:

• Make sure the RowType is actually DataControlRowType.DataRow
• Make sure e.Row.RowIndex == 0

Set a breakpoint in the code so you can make sure of those values.

After this, it looks like your code should work.

Assuming you've got a header row:

 if (e.Row.RowType == DataControlRowType.DataRow && e.Row.RowIndex == 0)

Your row 0 will be of DataControlRowType.HeaderRow

You want != 0, I think

Try to add TableCell before adding control:

TableCell cell = new TableCell();      
e.Row.Cells.Add(cell);
e.Row.Cells[i].Controls.Add(label);