C#

private void Form1_Load(object sender, EventArgs e)<br />
        {<br />
            // TODO: This line of code loads data into the 'employeeMgmtDataSet.Employees' table. You can move, or remove it, as needed.<br />
            this.employeesTableAdapter.Fill (this.employeeMgmtDataSet.Employees);<br />
<br />
        }

private void button1_Click(object sender, EventArgs e)<br />
        {<br />
            <br />
            foreach ( DataGridViewRow dr in dataGridView1.Rows )<br />
            {<br />
               dr.Tag   = "Michael Sync";<br />
            }<br />
        }

private void button2_Click(object sender, EventArgs e)<br />
       {<br />
           foreach ( DataGridViewRow dr in dataGridView1.Rows )<br />
           {<br />
               Console.WriteLine (dr.Tag.ToString ());<br />
           }<br />
       }