Datagridview rowvalidating vs cellvalidating sharepoint 2016 rss feed not updating

This, therefore, undoes any action you perform in the handler.What you have to do instead is change the value in the editing control (remembering not to cancel the event).The behaviour you are seeing is actually due to a painting issue and not due to the error icon not being shown.What is happening is that when you set the cell's error text the icon is displayed but the text box of the cell in edit mode is painted over the icon, hence no icon shown to the user!event, value calculates when I leave the next cell.To make it more clear when I press Enter for the second time.

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From within that event, you can indicate that the user's value is invalid by setting the Error Text value of the cell or row.

I handle the Row Validating event and do one final validation on the row as a whole to ensure everything is cool.

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