WinForm 父子窗体调用方法和控件

// 父窗体Form1
// 父窗体的方法
private void btnShow_Click(object sender, EventArgs e)
{
    ProductAddWindow addWindow = new ProductAddWindow();
    // ShowDialog要将父类对象传入
    addWindow.ShowDialog(this);
}

// 子窗体 ProductAddWindow
// 子窗体方法
private void btnSave_Click(object sender, EventArgs e)
{
    using(var conn = DapperHelper.GetConn())
    {
        Product product = new Product();
        product.Name ="产品1";
        product.ProductType = "金属";
        conn.Insert(product);
        Form1 form1= this.Owner as Form1;
        // 新增成功,调用父窗体InitData方法(刷新父页面DataGridView的数据)
        form1.InitData();
        // 关闭的窗体
        this.Close();
    }
}

// 子窗体调用父窗体的控件
// 子窗体调用父窗体前提,要将父窗体的控件Modifiers属性设置为public
private void ProductEdit_Load(object sender, EventArgs e)
{
    Form1 form1 = this.Owner as Form1;
    var cells = form1.dgvList.SelectedRows[0].Cells;
}