DataGridView1.Rows(e.RowIndex).Cells("DIFFERENT").Value = DateDiff(DateInterval.Year, DataGridView1.Rows(e.RowIndex).Cells("YEAR1").Value, DataGridView1.Rows(e.RowIndex).Cells("YEAR2").Value)

THIS code i put in datagridview_cellformating............

when i click button add (dt.rows.add(textbox))....all row in datagridview blinking and if too many rowswas added ,the blinking increase faster..


somebody help me please....................

You are resetting that value every time the cell refreshes; which is not necessary. The value should only be set when one of the other dependant values changes.

If the datagridview is bound then you should be changing the underlying datasource anyway, rather than setting the cell value direclty. It looks like you could probably use an expression column to handle this since it appears to be a simple date calcuation...

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Reed Kimble - "When you do things right, people won't be sure you've done anything at all"

yes...reed kimble you correct
it about the date calculation

        DataGridView1.Rows(e.RowIndex).Cells("different").Value = DateDiff(DateInterval.Year, DataGridView1.Rows(e.RowIndex).Cells("year1").Value, DataGridView1.Rows(e.RowIndex).Cells("year2").Value)

can you give me some code for example??

thank...

sorry reed kimble..i don't mention you..i using DATEDIFF in datagridview_cellformating