Delete and Maintain Items on GridView - asp.net

Question

Sorry for the previous question I've posted. So here's my problem again, here's my code for the gridview.
`
If e.CommandName = "DeleteItem" Then
Dim gvItems As GridView = CType(sender, GridView)
Dim gvparent As GridViewRow = CType(gvItems.NamingContainer, GridViewRow)
'(gvparent.Cells(2).Text)
If gvItems.Rows.Count = 1 Then
lblPopup.Text = "There must be atleast one row."
mpeError.Show()
Exit Sub
End If
Program.oEquipmentLoan.sTransactionCode = gvparent.Cells(3).Text
'Dim gvItem As GridView = TryCast(gvitems.FindControl("gvItems"), GridView)
'For Each gvRow As GridViewRow In gvitems.Rows
' Dim chkItem As CheckBox = DirectCast(gvRow.FindControl("chkSelectItems"), CheckBox)
' If (chkItem.Checked) Then
' Program.oEquipmentLoan.iItemNumber = gvRow.Cells(2).Text
' oSQLEquipmentLoan.DeleteEquipmentLoanItem(Program.oEquipmentLoan)
' End If
'Next
'loadGVGetTransactionLog()
Dim icount As Integer = 0
For Each gvRow As GridViewRow In gvItems.Rows
Dim chkItem As CheckBox = DirectCast(gvRow.FindControl("chkSelectItems"), CheckBox)
If (chkItem.Checked) Then
icount += 1
End If
Next
If icount > 0 Then
For Each gvRow As GridViewRow In gvItems.Rows
Dim chkItem As CheckBox = DirectCast(gvRow.FindControl("chkSelectItems"), CheckBox)
If (chkItem.Checked) Then
Program.oEquipmentLoan.iItemNumber = gvRow.Cells(2).Text
oSQLEquipmentLoan.DeleteEquipmentLoanItem(Program.oEquipmentLoan)
End If
Next
Else
Dim gvr As GridViewRow = DirectCast(DirectCast(e.CommandSource, Control).NamingContainer, GridViewRow)
Dim Index As Integer = gvr.RowIndex
Dim gvRowSelected As GridViewRow = gvItems.Rows(Index)
Program.oEquipmentLoan.iItemNumber = gvRowSelected.Cells(2).Text
oSQLEquipmentLoan.DeleteEquipmentLoanItem(Program.oEquipmentLoan)
End If
End If
sIndex = gvTransactionLogViewer.PageIndex
blnCount = True
loadGVGetTransactionLog()
End Sub`
So, this code particularly deletes a selected row on a gridview. My problem is that whenever I delete an item, after it is deleted, I can't maintain to view the list.
Image given Below :
The photo shows on the before part is that when I'm selecting an item to delete. and on the after, when the item is deleted. And as you can see, what I need to maintain is the list of the updated items after I delete something and after it refreshes. Thanks! :)

Answer 1

on your .aspx page you need to do the partial postback to prevent the whole page postback.
you can achieve this using either asp.net ajax update panel "partial page rendering" or jquery.