Detail Grid binding by Code

[Azmat]

Protected Sub RadGridProducts_ItemCommand(ByVal source As Object, ByVal e As Telerik.Web.UI.GridCommandEventArgs) Handles RadGridProducts.ItemCommand
        ViewState("GridItem") = e.Item ' gets the selected row for detail
        LblException.Text = ""
        Select Case e.CommandName

        End Select
    End Sub

Protected Sub RadGridProducts_DetailTableDataBind(ByVal source As Object, ByVal e As Telerik.Web.UI.GridDetailTableDataBindEventArgs) Handles RadGridProducts.DetailTableDataBind
        Try
            Dim item As GridItem = CType(ViewState("GridItem"), GridItem)
            Dim ProductId As String = RadGridProducts.MasterTableView.DataKeyValues(item.ItemIndex)("Id").ToString()
            Dim DTable As DataTable = DataAccess.Products.GetAllProductPricesById(ProductId)
            RadGridProducts.MasterTableView.DetailTables(0).DataSource = DTable
            RadGridProducts.MasterTableView.DetailTables(0).DataBind()
        Catch ex As Exception
        End Try
    End Sub

i want to bind the details table view  programmatically with the above code.
But This Gives an error as follows

Type 'Telerik.Web.UI.GridDataItem' in Assembly 'Telerik.Web.UI, Version=2008.3.1314.20, Culture=neutral, PublicKeyToken=121fae78165ba3d4' is not marked as serializable.

Please Help me i dont want to use DataSource Controls as our Project DAL is written in classic way.
Thanks

[Shinu]

Hi Azmat,

Hierarchical grid structure is not supported with simple data-binding (calling DataBind()). You may refer the following online demo to get more details about programmatically binding the Detail table.
Programmatic Binding

Shinu

[Prateek]

I also have this problem. when I try to put gridDataItem in ViewState then this Error occur.
Plz help to sort out this problem..
I have checked the link provided above..

Thanks 
Prateek

[Shinu]

Hi Prateek,

Can you make sure you are using the latest version of the Telerik. Try upgrading to the latest version of Telerik Controls. Based on the information furnished, it is hard to determine the precise cause. It would be best if you send us a small working project to find out the issue.

Thanks,
Shinu

[Prateek]

Hi Shinu,
I am using the Latest version of telerik . my working project issue is as same as given above by Azmat..

Thanks 
Prateek

[Shinu]

Hi Prateek,

Please provide your code snippet to replicate the issue.

Thanks,
Shinu

[Angel Petrov]

Hello,

The problem is caused by the fact that the GridDataItem class is not marked as Serializable which means that it can not be stored in the ViewState. Could you please elaborate more on why exactly do you want to store the GridDataItem in the ViewState?

Regards,
Angel Petrov
Telerik