CustomValidator inside Datagrid, DataList, DataRepeater

[ghafranabbas]

This is how you use the customvalidator control in any INamingContaine r
interface control (Datagrid, DataList, DataRepeater, etc).

1. In the ItemTemplate, place your customvalidator
2. Set the OnServerValidat e property of the customvalidator
3. Get reference to the Data Item object
(For DataList is DataListItem, for DataGrid its DataGridItem)
4. Get reference to any controls needed for validation
5. Perform the validation

Below is an example, where the two textboxes inside the ItemTemplate of
a DataList control cannot have the same value.

'=============B egin Code=========== ========

<script runat="server">
Private Sub ValidateCustomV alidator(ByVal source As System.Object,
ByVal args As System.Web.UI.W ebControls.Serv erValidateEvent Args)

Dim DataItem As DataListItem = CType(source,
CustomValidator ).NamingContain er
Dim txt1 As TextBox = DataItem.FindCo ntrol("TextBox1 ")
Dim txt2 As TextBox = DataItem.FindCo ntrol("TextBox2 ")
If txt1.Text = txt2.Text Then
args.IsValid = False
End If
End Sub
</script>

<asp:DataList id="DataList1" runat="server">
<ItemTemplate >
<asp:TextBox id="TextBox1" runat="server"> </asp:TextBox>
<asp:TextBox id="TextBox2" runat="server"> </asp:TextBox>
<asp:CustomVali dator id="CustomValid ator1" runat="server"
ErrorMessage="C annot Be The Same"
OnServerValidat e="ValidateCust omValidator">*</asp:CustomValid ator>
</ItemTemplate>
</asp:DataList>

'=============E nd Code=========== ========