Duplicate item validation

[ZAFFAR]

I am trying to validate duplicate value in the Radgrid cell , but it validates same raw itself please help me find the solution.

<asp:CustomValidator ID="CustomValidator1" runat="server" ErrorMessage="Duplicate product not allowed"
                            ControlToValidate="RadComboBox1" OnServerValidate="CustomValidator1_ServerValidate" >

Protected Sub CustomValidator1_ServerValidate(ByVal source As Object, ByVal args As System.Web.UI.WebControls.ServerValidateEventArgs)
            For Each dataItem As GridDataItem In RadGrid1.Items
            If args.Value = CType(dataItem("pk_productid").FindControl("RadComboBox1"), RadComboBox).Text Then
                args.IsValid = False
            End If

        Next

    End Sub

 

[Maria Ilieva]

Hi,

I'm not completely sure what is the exact scenario you need to achieve and what is the issue you are currently facing. I would suggest you to review the following online resources which elaborates on this matter:
http://www.telerik.com/help/aspnet-ajax/grid-validation.html
http://demos.telerik.com/aspnet-ajax/grid/examples/dataediting/validation/defaultcs.aspx


Kind regards,
Maria Ilieva
the Telerik team

[ZAFFAR]

Its ok  I solved it with the following, thanks any ways . 

Protected Sub radgrid1_SelectedIndexChanged(ByVal sender As Object, ByVal e As RadComboBoxSelectedIndexChangedEventArgs)
        Dim combo As RadComboBox = TryCast(sender, RadComboBox)
        Dim item As GridDataItem = DirectCast(combo.NamingContainer, GridDataItem)
        Dim index As Integer = item.ItemIndex
        For Each row As GridDataItem In RadGrid1.Items
            If Not row.ItemIndex = item.ItemIndex Then
                If e.Text = CType(row("pk_productid").FindControl("RadComboBox1"), RadComboBox).Text Then
                    MsgBox("Duplicate product not allowed", MsgBoxStyle.Critical)
                    CType(item("pk_productid").FindControl("RadComboBox1"), RadComboBox).Text = "-"
                End If
            End If
        Next
    End Sub