[Solved] How to manipulate data in DB

[FreshOne]

hi all,
i just want to be sure that i'm working right with the grid..i manipulate data in the code behind, here is the ItemCommand sub

    Private Sub RadGrid2_ItemCommand(ByVal source As Object, ByVal e As Telerik.Web.UI.GridCommandEventArgs) Handles RadGrid2.ItemCommand
        If e.CommandName = "Update" Then
            If Page.IsValid Then
                Dim item As GridEditableItem = CType(e.Item, GridEditableItem)
                Dim objSection As New Sections(item.GetDataKeyValue("ID"))
                objSection.SectionName = CType(item.FindControl("txtSectionName"), TextBox).Text
                objSection.Update()
                e.Item.Edit = False
            End If
        ElseIf e.CommandName = "PerformInsert" Then
            If Page.IsValid Then
                Dim item As GridEditableItem = CType(e.Item, GridEditableItem)
                Dim objSection As New Sections()
                objSection.SectionName = CType(item.FindControl("txtSectionName"), TextBox).Text
                objSection.LangID = Session("Language")
                objSection.SiteID = Session("Site")
                objSection.Insert()
                e.Canceled = True
                e.Item.OwnerTableView.IsItemInserted = False
                e.Item.OwnerTableView.Rebind()
            End If
        ElseIf e.CommandName = "Delete" Then
            Dim item As GridDataItem = DirectCast(e.Item, GridDataItem)
            Dim objSection As New Sections(item.GetDataKeyValue("ID"))
            objSection.Delete()
        End If
    End Sub

It's functioning well, but i want to be sure that my approach is correct, and there is no easier and better approach to do it.
To be more specific:
1. to get user inputs, i have to use FindControl function right? 

2. to close the popup after success update i have to use

e.Item.Edit = False

which don't work on insert so after success insert i use 

                e.Canceled = True
                e.Item.OwnerTableView.IsItemInserted = False
                e.Item.OwnerTableView.Rebind()

3. on insert and update i need to use 

Dim item As GridEditableItem = CType(e.Item, GridEditableItem)

but on delete i use

Dim item As GridDataItem = DirectCast(e.Item, GridDataItem)

Wht do u think? am i getting it right?
thnx in advance

[robertw102]

I would suggest using the InsertCommand, UpdateCommand and DeleteCommand events, instead of handling the ItemCommand event, to handle the respective operations.

[FreshOne]

hi robertw102 thnx for ur reply
why? wht's the difference? does it affect the performance?

[robertw102]

It doesn't affect performance, although ItemCommand before the Insert/Update/Delete commands so two events get raised, it just makes more sense to handle the insert/update/delete operations using the correct event.