ADD CALENDAR TO GRIDVIEW

.ASPX CODE 

<asp:TemplateField HeaderText="Years">               
               

  <ItemTemplate>

 <asp:TextBox ID="text1" runat="server"></asp:TextBox>

     

<asp:Calendar ID="Cal1" runat="Server" OnSelectionChanged="Cal1_SelectionChanged">

</asp:Calendar>

                      

 </ItemTemplate>

                

   </asp:TemplateField>

.CS   CODE 

 protected void Cal1_SelectionChanged(object sender, EventArgs e)
    {
        Calendar cal = (Calendar)sender;
        TextBox text1 = (TextBox)((GridViewRow)cal.Parent.Parent).FindControl("text1");

        text1.Text = cal.SelectedDate.ToShortDateString();

    }