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    Cell validating cancel

    The following code example handles the Cell Validating event to ensure that only positive integers are entered by the user. Error Text = "" Dim new Integer As Integer ' Don't try to validate the 'new row' until finished ' editing since there ' is not any point in validating its initial value. To associate the event with your event handler, add an instance of the delegate to the event.This example is part of a larger example available in the Virtual Mode reference topic. The event handler is called whenever the event occurs, unless you remove the delegate.I'm using a Data Grid View in my Win Forms application. Process Dialog Key(key Data) End Function No, but you can manually fire the Cell Validating event. All events are is a class using the Observer Pattern, they're no different than any other method.My main objective is to make the Enter key not move to the next row in the grid. If that doesn't work, you can create a Key Press event on the cell and emulate pressing Enter on the cell, but that may mess with the users UI, just put the carat back where it was.If the key pressed is Enter, I call End Edit(), otherwise I call base. It works great, except the Cell Validating event isn't fired. Column Index = 1 Then Dim i Row As Integer = My Base. Currently, I'm just manually calling my validation logic before I call End Edit, but it seems like I'm missing something. Its not permissible to have the two selected to true, but they can both be false.

    What I really want is some flavour of End Edit() that behaves just like pressing enter on the last row of a grid with adding disabled. my version is a slight different from yours, because when i move to the other cell, and my code returns e.cancel=false in the cell validating event, an error will be generated, says that: "operation did not succeed, because the program cannot commit or quit a cell value change". this is my code: Protected Overrides Function Process Dialog Key(By Val key Data As System.

    In a datagridview (vs2005, VB.net) I have two columns that are checkboxes.

    I need to check that only one of the two can be checked.

    Cells(1) frm Ok_Click(Me, New Event Args) Catch ex As Exception End Try Return True End If End If Return My Base.

    You can use data validation to restrict the type of data or values that users enter into cells.

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