How to hide a TemplateField column in a GridView

by 
protected void OnRowCreated(object sender, GridViewRowEventArgs e)
{
         e.Row.Cells[columnIndex].Visible = false;
}

If you don’t prefer hard-coded index, the only workaround I can suggest is to provide a HeaderText for the GridViewColumn and then find the column using that HeaderText.

protected void UsersGrid_RowCreated(object sender, GridViewRowEventArgs e)
{
    ((DataControlField)UsersGrid.Columns
            .Cast<DataControlField>()
            .Where(fld => fld.HeaderText == "Email")
            .SingleOrDefault()).Visible = false;
}

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