AddForm add = new AddForm();//窗口中叠if (add.ShowDialog()== DialogResult.OK){var sql = " SELECT Sid '序号', SName '姓名', SAddress '学生类别', State '户口所在地', STel '学生电话', Class '班级编号' FROM dbo.tb_stu";dataGridView1.DataSource = DBHelper.ExecuteTable(sql);}添加窗体string sql = string.Format("insert into tb_stu values('{0}','{1}')", textBox1.Text, textBox2.Text);if (DBHelper.ExecuteNonQuery(sql)){MessageBox.Show("添加成功", "提示", MessageBoxButtons.OK);DialogResult = DialogResult.OK;//属性链接}else{MessageBox.Show("添加不成功", "提示", MessageBoxButtons.OK); }

主窗体实例化添加窗体添加成功后返回主窗体刷新