How to get selected check boxes in datagridview using C#

protected void btnDelete_Click(object sender, EventArgs e)
    {

        foreach (GridViewRow grow in GridView1.Rows)
        {
            CheckBox chkStat = grow.FindControl("chkStatus") as CheckBox;
            int index = grow.RowIndex;
            if (chkStat.Checked)
            {
                //Write some code if checkbox is checked
            }
            else
            {
                //Write some code if checkbox is not checked
            }
        }
    }