Cellvalidating event in datagridview

This makes more sense when we think about a Text Box column.We would not want the Cell Value Changed event firing every single time a letter was added to a person’s last name.Well, in my case, the message box is showing up when the current cell's column index is 3(the 4'th column) and if the current cell's content matches any 4'th column's cells (except if the current cell is not the same as the 4'th column's cell).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.Let me know if I have been clear enough (sorry if I wasn't earlier). You are currently viewing the C# 2005 section of the Wrox Programmer to Programmer discussions.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.Any solution is going to involve using an event that definitely will fire to stop the Data Grid View from thinking it’s in edit mode.

There are differences between Cell Enter and Cell Validated and that's why there are two events.

If there are no duplicates, the Enter key is used to proceed from one row to the one immediately below in the same column. You need to handle the Selection Changed event too. Please try the following code and let me know if it is clear to you and if it works for you.

When there is a duplicate, pressing the Enter key should bring up the message box (which is what it is doing right now) avoid the focus to move down to the next row. Please try the following code and let me know if it is clear to you and if it works for you.

Cell Enter occurs after a cell gets the focus and Cell Validated occurs when the focus is about to leave.

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!

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