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EDIT: here is my validating methods: Here is how it looks when it happens, if I hit Escape key, the error message disappears, but when I try to click something else, Row Validation happens again and I back to this state: EDIT2: I use datatable as datasource for this datagridview.

Hi all, I need to override the event that is fired when I hit the Enter key in a datagrid.

Here's the code I've come up with so far: When I close the Message Box (which shows exactly when the condition is met), the focus goes to the row below.

As I said, I would like it to remain in the cell that has the duplicate content.

Cell Enter occurs after a cell gets the focus and Cell Validated occurs when the focus is about to leave.kernelcoder, first off thank you for your time!

I realized I forgot to thank you in my previous response.

I only want the message box to appear when I hit Enter after entering something and the content of the current cell (in the 4th column) is a duplicate of another cell in the same column. You need to handle the Selection Changed event too.