Raise cellvalidating event datagridview
Further, let’s say that you’d like to know as soon as the user has made a change to their selection.You might want to handle this for a number of reasons: to enable a save button, to change the appearance of selected items, to display a pop-up window, or to check for consistency against other choices.When the validation fails, the editor is closed, but the user cannot change the current row in the grid until a valid cell value is entered.In this situation the editor is not kept active when the validation fails and pressing the Esc key does not revert the changes as the editor is already closed.
NET, but, not to fear, there are several easy work-arounds that will get the trick done.Row Index and Data Grid View Cell Validating Event Args. When this event is canceled in virtual mode, the Data Grid View. Column Index properties to access the cell through the Data Grid View. We would not want the Cell Value Changed event firing every single time a letter was added to a person’s last name.Still, it doesn’t make much sense when we think about the way Check Box’s work, in that, they can only ever be On or Off, and that once you have made your selection, you’re probably pretty confident that you want to change the value.