c# - 网格控件返回值

Question

我想从弹出表单接收返回值。弹出窗体上有一个gridControl，需要在父窗体gridControl中插入哪些值。

我称之为弹出表单：

    private void label14_Click(object sender, EventArgs e)
    {
        frmSelectInvoice selectInvoice = new frmSelectInvoice();
        selectInvoice.ShowDialog();            
    }

这是弹出表单源：

    public partial class frmSelectInvoice : DevExpress.XtraEditors.XtraForm
{

    public ValinorEntities valinor;
    public BindingSource src;

    public frmSelectInvoice()
    {
        InitializeComponent();

        using (this.valinor = new ValinorEntities())
        {
            this.valinor = new ValinorEntities();
            this.src = new BindingSource(valinor.invoices_head, null);
            gridControl1.DataSource = src;
            src.DataSource = valinor.invoices_head;
        }
    }

    private void button1_Click(object sender, EventArgs e)
    {

        this.Close();
    }
}

弹出表单中的返回值应该是什么？

Answer 1

使用静态类；

public static class MyClass
{
    public static object myValue;
}


private void label14_Click(object sender, EventArgs e)
{
    frmSelectInvoice selectInvoice = new frmSelectInvoice();
    selectInvoice.ShowDialog();  
    //Get value before close
    object value = MyClass.myValue;
}



public partial class frmSelectInvoice : DevExpress.XtraEditors.XtraForm
{
    public ValinorEntities valinor;
    public BindingSource src;

    public frmSelectInvoice()
    {
        InitializeComponent();

        using (this.valinor = new ValinorEntities())
        {
            this.valinor = new ValinorEntities();
            this.src = new BindingSource(valinor.invoices_head, null);
            gridControl1.DataSource = src;
            src.DataSource = valinor.invoices_head;
        }
    }

private void button1_Click(object sender, EventArgs e)
{
    //Set value after close
    MyClass.myValue = "value";
    this.Close();       
}

}