int Row = 0;
if (textBox1.Text != "" & textBox2.Text != "" &
textBox3.Text != "" & textBox4.Text != "")
{
dataGridView1.Rows.Add();
Row = dataGridView1.Rows.Count - 2;
dataGridView1[0,Row].Value = textBox1.Text;
dataGridView1[1,Row].Value = textBox2.Text;
dataGridView1[2,Row].Value = textBox3.Text;
dataGridView1[3,Row].Value = textBox4.Text;
dataGridView1.Refresh();
textBox1.Text = "";
textBox2.Text = "";
textBox3.Text = "";
textBox4.Text = "";
}
else
{
MessageBox.Show("You did not entered values to all text boxes",
"Error", MessageBoxButtons.OK,MessageBoxIcon.Error);
}
}
for 4 textboxes........ CHEERS