Hi rahat220,
You can click a button for doing that :
private void button3_Click(object sender, EventArgs e)
{
for (int i = 0; i < dataGridView1.Rows.Count; i++)
{
if (dataGridView1.Rows[i].Cells["DataGridView1_CheckBoxColumn"].Value != null && bool.Parse(dataGridView1.Rows[i].Cells["DataGridView1_CheckBoxColumn"].Value.ToString()))
{
}
}
}
I hope this help,
:)