C#

for (int i = 0; i < dataGridView1.Rows[e.RowIndex].Cells.Count; i++)
{
dataGridView1[i, e.RowIndex].Style.BackColor = Color.Green; // works for all 3 rows

if(dataGridView1[i, e.RowIndex] == null)
	MessageBox.Show("Somehow, I have the null value here...");
else
	MessageBox.Show(dataGridView1[i, e.RowIndex].Value.ToString());
}

Manas Bhardwaj wrote:

This shows that it has the null value in it...

try with this code, this will tell you whenever you have the null value.


for (int i = 0; i < dataGridView1.Rows[e.RowIndex].Cells.Count; i++){dataGridView1[i, e.RowIndex].Style.BackColor = Color.Green; // works for all 3 rowsif(dataGridView1[i, e.RowIndex] == null) MessageBox.Show("Somehow, I have the null value here...");else MessageBox.Show(dataGridView1[i, e.RowIndex].Value.ToString());}

DataTable dt = new DataTable();
            dt.Columns.Add("1");
            dt.Columns.Add("2");
            dt.Rows.Add("100", "101");
            dt.Rows.Add("102", "103");
            dt.Rows.Add("103", "104");
            dataGridView1.DataSource = dt;

private void dataGridView1_RowLeave(object sender, DataGridViewCellEventArgs e)
        {
            for (int i = 0; i < dataGridView1.Rows[e.RowIndex].Cells.Count; i++)
            {
                dataGridView1[i, e.RowIndex].Style.BackColor = Color.Green; // works for all 3 rows
                MessageBox.Show(dataGridView1[i, e.RowIndex].Value.ToString()); // Throws exception on 3rd row
            }
        }