[C# Win app]เรื่องการลบข้อมูลใน DataGridView ที่ต่อกับฐานข้อมูล แบบหลายๆแถว

foreach (DataGridViewRow row in mImageFileDataGridView.SelectedRows)
                {
                        string conStr = @"Data Source=ARMSPRITE-PC\SQLEXPRESS;
			            Initial Catalog=traningProject;
                        Integrated Security=SSPI;";
                        SqlConnection connection = new SqlConnection(conStr);

                        int currentRow = int.Parse(mImageFileDataGridView.CurrentCell.RowIndex.ToString());
                        string iDString = mImageFileDataGridView[0, currentRow].Value.ToString();
                        int iDInt = int.Parse(iDString);
                        //MessageBox.Show("Error:" + iDInt);
                        string delFile = (string)mImageFileDataGridView.Rows[0].Cells["path"].Value.ToString();
                        string sql = "DELETE FROM ImageFile WHERE imgNo =" + iDInt + ";";
                        SqlCommand command = new SqlCommand(sql, connection);
                        connection.Open();
                        command.ExecuteNonQuery();

                        File.Delete(delFile);
                        mToolStripProgressBar.Value = 0;
                        mToolStripProgressBar.Value = 100;
                        mToolStripProgressBar.Value = 0;
                if (this.mSearchTextBox.Text == "")
                {
                    mSearchAllButton.PerformClick();//run Search Button
                }
                else
                {
                    mSearchButton.PerformClick();
                }
            }