<asp:Panel ID="PannelloGridView"     
     runat="server"     
     ScrollBars="Vertical"     
     Height="415px"     
     Width="100%">      
    
    
<asp:GridView ID="GridView1"     
    runat="server"     
    AllowPaging="false"    
    AllowSorting="True"     
    AutoGenerateColumns="False"     
    DataSourceID="SqlDataSource1"    
    DataKeyNames="codunt,codacr"     
    Width="98%"    
    CssClass="tab_gen">    
    
<Columns>    
<asp:TemplateField HeaderText="" SortExpression="codunt">    
 <EditItemTemplate>    
  <asp:Label ID="TextBox"     
       runat="server"     
       Text='<%# Bind("codunt") %>'>    
  </asp:Label>    
 </EditItemTemplate>    
    
 <ItemTemplate>    
  <asp:Label ID="Label1"     
      runat="server"     
      Text='<%# Bind("codunt") %>'>    
  </asp:Label>    
 </ItemTemplate>                                    
</asp:TemplateField>    
    
<asp:TemplateField HeaderText="" SortExpression="descunt">    
 <EditItemTemplate>    
  <asp:Label ID="TextBox2" runat="server" Text='<%# Bind("descunt")  %>'></asp:Label>    
</EditItemTemplate>    
    
<ItemTemplate>    
  <asp:Label ID="Label2" runat="server" Text='<%# Bind("descunt") %>'></asp:Label>    
</ItemTemplate>                                    
</asp:TemplateField>    
    
<asp:TemplateField HeaderText=""     
   SortExpression="codacr"     
   ItemStyle-Width="100px">    
<EditItemTemplate>    
 <asp:DropDownList ID="DDL"      
     Runat="Server"    
     DataSourceID="SqlDataSourceDDL"     
     DataTextField="codacr"     
     DataValueField="codacr"  OnSelectedIndexChanged="DDL_SelectedIndexChanged"    
   AutoPostBack="true"     
   AppendDataBoundItems="true"    
   SelectedValue='<%# Bind("codacr") %>'>     
    
 <asp:ListItem Text="N/A" Value="--"></asp:ListItem>    
</asp:DropDownList>    
    
<asp:SqlDataSource ID="SqlDataSourceDDL"     
   Runat="server"     
   ConnectionString="<%$ ConnectionStrings:ConnectionString %>"    
    
  SelectCommand="" >                                            
</asp:SqlDataSource>    
</EditItemTemplate>    
    
<ItemTemplate>    
<asp:Label ID="Label3" runat="server" Text='<%# Bind("codacr") %>'></asp:Label>    
</ItemTemplate>                                    
    
<ItemStyle Width="100px"></ItemStyle>    
</asp:TemplateField>                                
    
<asp:TemplateField HeaderText="" SortExpression="descacr">    
<EditItemTemplate>    
<asp:Label ID="Label" runat="server" Text='<%# Bind("descacr") %>'></asp:Label>    
</EditItemTemplate>    
    
<ItemTemplate>    
<asp:Label ID="Label4" runat="server" Text='<%# Bind("descacr") %>'></asp:Label>    
</ItemTemplate>                                    
</asp:TemplateField>                                
<b>   
<asp:TemplateField ShowHeader="False">    
<EditItemTemplate>    
<asp:LinkButton ID="LinkButtonAggiorna"     
runat="server"     
CausesValidation="false"     
CommandName="Update"     
Text="Aggiorna"     
OnClick="LinkButtonAggiorna_Click">    
</asp:LinkButton>    
&nbsp;    
<asp:LinkButton ID="LinkButton2"     
runat="server"     
CausesValidation="False"     
CommandName="Cancel"     
Text="Annulla">    
</asp:LinkButton>    
</EditItemTemplate>    
    
<ItemTemplate>    
<asp:LinkButton ID="LinkButton1"    
runat="server"     
CausesValidation="False"    
CommandName="Edit"    
Text="Modifica">    
</asp:LinkButton>                                      
</ItemTemplate>    
</asp:TemplateField>   
</b>    
</Columns>    
</asp:GridView>    
</asp:Panel>   

protected void grid_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        if (e.Row.RowType == DataControlRowType.DataRow && (e.Row.RowState & DataControlRowState.Edit) != 0)
        {
            Control c = e.Row.FindControl("DDLEdit");
            this.SetFocus(c);
        }

        if (GridView1.ShowFooter == true)
        {
            if (e.Row.RowType == DataControlRowType.Footer)
            {
                Control c = e.Row.FindControl("DDLInsert");
                this.SetFocus(c);
            }
        }
    }