C#最简单的关闭子窗体更新父窗体

主窗体Form1关键代码：

将子窗体最为对话框模式弹出，当窗体关闭或取消时更新主窗体

 private void simpleButton1_Click(object sender, EventArgs e)
        {
            Form2 f2 = new Form2();
            f2.Owner = this;
            DialogResult result=f2.ShowDialog();
            if (result == DialogResult.Cancel)
            {
                this.gridControl1.DataSource = f2.CreateTable();
            }
        }

子窗体

 private void simpleButton1_Click(object sender, EventArgs e)
        {
            this.Close();
        }

        public DataTable CreateTable()
        {
            DataTable tableA1 = new DataTable();
            tableA1.Columns.AddRange(new DataColumn[] { new DataColumn("名称"), new DataColumn("规格"), new DataColumn("单号"), new DataColumn("数量") });
            tableA1.Rows.Add(new object[] { "螺旋", "LS-X", "111", "2" });
            tableA1.Rows.Add(new object[] { "螺旋", "LS-X", "222", "1" });
            tableA1.Rows.Add(new object[] { "指针", "LX-3", "523", "2" });
            tableA1.Rows.Add(new object[] { "其他", "L-1", "666", "2" });
            tableA1.Rows.Add(new object[] { "其他", "L-1", "456", "1" });
            tableA1.Rows.Add(new object[] { "其他", "L-1", "990", "2" });
            return tableA1;
        }