Raise cellvalidating event datagridview
I would like to manipulate a cell in my Data Grid View when it is validating so that if the user enters a value that is not valid for the database, but is easily converted to valid data, the program will change the value to an appropriate one.I am able to validate my value properly but when I try to change it to something valid I get a Data Error. You should never attempt to change the cell value in the handler for this event, because unless you cancel the event (in which case the user is stuck in edit mode), the cell value is set to the value from the editing control immediately after the event finishes.1) Add a conditional statement in the event handler code to only execute when required.
It's perhaps not the cleanest solution, but the only way I've been able to force the grid to validate without programatically trying to change cells, which would be an even worse solution. So I created the following routines, and call Commit Grid Edit() in the relevant Tool Strip click events. Public Sub Commit Grid Edit(By Val frm As Form) ' Clicking on a Tool Strip menu item will not cause the grid to end editting the current cell. End Edit() End If End If End Sub Private Function Get Focused Grid(By Val ctl As Control) As Data Grid View For Each c As Control In ctl.
I had this same issue and none of the responses on various forums did the trick for me. ' So we have to find if any grid is in edit mode and do this ourself. Controls If Type Of c Is Data Grid View And Also c.
There are two flavors, passive and supervising controller.
The very first thing you need to do is make sure that your form is not responsible for retrieving the Data Table. The Presenter should be responsible for providing it to the View.
2) Detach the event hander before the unwanted event triggers and re-attach after. so when i click the add button the cell validating event triggers i have posted the cell validating event do you know how to solve this thanxxx code!!!