DataGridView为表头增加批量选择框

/// <summary>
        /// 给DataGridView添加全选
        /// </summary>
        public class AddCheckBoxToDataGridView
        {
            public static System.Windows.Forms.DataGridView dgv;
            public static void AddFullSelect()
            {
                if (dgv.Rows.Count < 1)
                {
                    return;
                }
                System.Windows.Forms.CheckBox ckBox = new System.Windows.Forms.CheckBox();
                ckBox.Text = "全选";
                ckBox.Checked = true;
                System.Drawing.Rectangle rect =
                    dgv.GetCellDisplayRectangle(0, -1, true);
                ckBox.Size = new System.Drawing.Size(dgv.Columns[0].Width, 18);
                ckBox.Location = rect.Location;
                ckBox.CheckedChanged += new EventHandler(ckBox_CheckedChanged);
                dgv.Controls.Add(ckBox);
            }
            static void ckBox_CheckedChanged(object sender, EventArgs e)
            {
                for (int i = 0; i < dgv.Rows.Count; i++)
                {
                    dgv.Rows[i].Cells[0].Value = ((System.Windows.Forms.CheckBox)sender).Checked;
                }
                dgv.EndEdit();
            }
        }

调用方法

AddCheckBoxToDataGridView.dgv = dgvKS_RY;
                    AddCheckBoxToDataGridView.AddFullSelect();