Home/ Questions/Q 3936072
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-19T23:54:11+00:00

I’m trying to delete a row from a DataGridView I use two types of

  • 0

I’m trying to delete a row from a DataGridView
I use two types of instuctions
A

VouchersDGV.Rows.Clear()

B

If Not DGV.Rows(RowIndex).IsNewRow Then
                DGV.Rows.RemoveAt(RowIndex)
                DGV.Refresh()
            End If

Both of them from inside of 

VouchersDGV_RowValidating

Event

I also run it from another Event Handler with RaiseEvent.
The last Event handler I’m useing it to escape from inside of the row in case of wrong typing or… what ever and bring the datagrid to it’s initial position
The Event is

Private Sub Supplier_prod_EscapeOnFirstRowPressed() Handles Me.EscapeOnFirstRowPressed

To delete the row I’m enter to above EventHandler from 

VouchersDGV_RowValidating

EventHandler and I take back the same error 

DGV.Rows.RemoveAt(0) {"Operation cannot be performed in this event handler."}

Personally I can’t understand why that happen and how i can give a solution

Is there anybody to know about this error?

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    At the point of validation, it is relying on a particular state, and it obviously isn’t happy for you to start changing the rows when it only asked you to validate something. I can’t say I blame it; having to re-validate the scenario after every event would get… confusing; better to prevent the change.

    You could instead queue the item for removal, on a timer of another callback, or maybe there is a mechanism for saying “no” during validation.

    • 0