How to make cell value null when mouse enter in cell?

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How to make cell value null or empty when mouse enter in that mouse selected cell.

What I have tried:

C#

private void dataGridView1_CellEnter(object sender, DataGridViewCellEventArgs e)
        {
          
            foreach (DataGridViewRow dr in dataGridView1.SelectedRows)
            {
                dr.Cells["cal_qty"].Value = "";
            }
        }

Posted 17-Apr-16 20:06pm

Member 12242717

Updated 17-Apr-16 20:44pm

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ)

v2

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Garth J Lancaster · Accepted Answer · 2016-04-17T20:44:00

Well, as you've asked the question, this 'might' work if you create the CellMouseEnter event

C#

private void dataGridView1_CellMouseEnter(object sender,
    DataGridViewCellEventArgs e)
{
    DataGridViewCell cell = 
            this.dataGridView1.Rows[e.RowIndex].Cells[e.ColumnIndex];
    cell.Value = "";

}

but, Im not sure if its what you actually NEED (want != need) - if you're waving the mouse around your datagridview, this could wipe out any/all cells

after some thought I might be mis-interpreting what you've asked, so, instead of using CellMouseEnter, add the two lines in the event procedure above to the SelectionChanged event - ie

C#

private void dataGridView1_SelectionChanged(object sender,
    DataGridViewCellEventArgs e)
{
    DataGridViewCell cell = 
            this.dataGridView1.Rows[e.RowIndex].Cells[e.ColumnIndex];
    cell.Value = "";

}