DataGridView.UpdateRowErrorText Method (Int32, Int32)
Forces the rows in the given range to update their error text.
Assembly: System.Windows.Forms (in System.Windows.Forms.dll)
rowIndexStart is not in the valid range of 0 to the number of rows in the control minus 1.
rowIndexEnd is not in the valid range of 0 to the number of rows in the control minus 1.
rowIndexEnd is less than rowIndexStart.
This method is useful when you maintain row error text yourself by handling the RowErrorTextNeeded event. Call this method when you change the stored error text for the specified rows. This will force the DataGridView control to retrieve the updated text through the RowErrorTextNeeded event handler.
Available since 2.0