将获得的值设置为Datagridview Parent / Child Form VB.NET

Question

我正在尝试从包含DataGridView的子窗体传递变量，我正在调用一个函数来执行操作，但我不能单独成功函数获取值但不会改变窗体的datagridview父，我正在使用的代码是：

Invoice_new（父表格）：

Controls:
DatagridView: invoice_items

Public WriteOnly Property ValueFromChild() As String
    Set(ByVal Value As String)
        MsgBox(Value) 'Work
        With Me.invoice_items
            .Rows.Add() 'Does not WORK
            .Item(0, 0).Value() = Value 'Does not WORK
        End With
    End Set
End Property

invoice_new_search_item（儿童表格）

Controls:
DatagridView: search_items

invoice_new.ValueFromChild() = search_items.Item(0, current_row).Value

Answer 1

参见CType Funcion：

CType(your_parent_form.ActiveMdiChild, your_childform).invoice_items.Item(0, 0).Value