//获取用户选择的行的数据...
String str = "开户公司/网址:";
str+= this.dataGridView.CurrentRow.Cells[1].Value.ToString();
//加列名
str += "\n\n用户名/卡号:";
str += this.dataGridView.CurrentRow.Cells[2].Value.ToString();
//加列名
str += "\n\n密码:";
str += this.dataGridView.CurrentRow.Cells[3].Value.ToString();
MessageBox.Show("你确定要删除该条记录吗?\n\n"+str);