how to fill dropdownlist inside gridview from sql

<asp:TemplateField HeaderText="Hire" ItemStyle-Width="50px">     <ItemTemplate>         <asp:DropDownList ID="ddlGridListHire" runat="server"  AppendDataBoundItems="true" >asp:DropDownList>     ItemTemplate> asp:TemplateField> <asp:TemplateField HeaderText="Status" ItemStyle-Width="50px">     <ItemTemplate>         <asp:DropDownList ID="ddlGridListStatus" runat="server"  AppendDataBoundItems="true" >asp:DropDownList>     ItemTemplate> asp:TemplateField> <asp:TemplateField HeaderText="Background Check" ItemStyle-Width="50px">     <ItemTemplate>         <asp:DropDownList ID="ddlGridListBackgroundCheck" runat="server"  AppendDataBoundItems="true" >asp:DropDownList>     ItemTemplate> asp:TemplateField>

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e) 

{ 

}