empty cell in datagridview

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Hello

I am getting a nullReferenceException when accessing cells in datagridview.
I've tried these to check for the empty cell (so to not access it), none of them is working for me. Any help??

C#

if (dataGridView2.Rows[0].Cells[col].Value!=DBNull.Value)

if (string.IsNullOrEmpty(dataGridView2.Rows[0].Cells[col].Value.ToString()) == false)

String s=dataGridView2.Rows[0].Cells[col].Value.ToString();
if(IsNullOrEmpty(s))

Posted 29-Aug-13 4:00am

suleman115

Updated 29-Aug-13 4:06am

ridoy

v3

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GuyThiebaut 29-Aug-13 10:06am

Try this:

if (dataGridView2.Rows[0].Cells[col]!=DBNull)

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ridoy · Answer 1 · 2013-08-29T04:10:00

How about this:

C#

if (dataGridView2.Columns[e.ColumnIndex].Name == "ColumnName")
        {
            if (String.IsNullOrEmpty(e.FormattedValue.ToString()))
            {
                dataGridView1.Rows[e.RowIndex].ErrorText =
                    "Column Name must not be empty";
                e.Cancel = true;
            }
        }

Also can use:

C#

foreach (DataGridViewRow rw in this.dataGridView2.Rows)
{
  for (int i = 0; i < rw.Cells.Count; i++)
  {
    if (rw.Cells[i].Value == null || rw.Cells[i].Value == DBNull.Value || String.IsNullOrWhitespace(rw.Cells[i].Value.ToString())
    {
      // Do your stuff...
    }
  }
}