从其他形式更新Xamdatagrid来源的最佳方法是什么？

发布于 2025-01-27 19:39:14 字数 634 浏览 3 评论 0原文

我的MainWindow中有一个Xamdatagrid，它具有public共享列表（Artikelstammdaten的公共共享列表）作为dataSource。打开其他表格后，我想在单击按钮时向Xamdatagrid添加更多数据。我认为最简单的方法只是更新dataSource，但我会遇到一个错误：

对未发布成员的引用需要对象参考。

这就是我尝试的：

    Private Sub Add_Click(sender As Object, e As RoutedEventArgs)
        Dim update = MainWindow.listArtikelstammdaten.Concat(CType(Import.ComparedAccessData, IEnumerable(Of Artikelstammdaten)))
        dgArticleMasterData.DataSource = update
        Me.Close()
    End Sub

原文

I have a XamDataGrid in my MainWindow which has a Public Shared List(Of Artikelstammdaten) as DataSource. After opening a few other forms I want to add more data to the XamDataGrid with a button click. I thought the easiest way would be just to update the DataSource, but I get an Error:

The reference to an unreleased member requires an object reference.

This is what I have tried:

    Private Sub Add_Click(sender As Object, e As RoutedEventArgs)
        Dim update = MainWindow.listArtikelstammdaten.Concat(CType(Import.ComparedAccessData, IEnumerable(Of Artikelstammdaten)))
        dgArticleMasterData.DataSource = update
        Me.Close()
    End Sub

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惟欲睡 2025-02-03 19:39:14

如果dgarticlemasterdata在mainWindow类中定义，则需要获取对mainwindow实例的引用才能访问它。

您应该能够在application.current.windows集合中找到它：

Private Sub Add_Click(sender As Object, e As RoutedEventArgs)
    Dim update = MainWindow.listArtikelstammdaten.Concat(CType(Import.ComparedAccessData, IEnumerable(Of Artikelstammdaten)))

    Dim window = Application.Current.Windows.OfType(Of MainWindow).FirstOrDefault()
    If window IsNot Nothing Then
        window.dgArticleMasterData.DataSource = update
    End If
    Me.Close()
End Sub

If dgArticleMasterData is defined in the MainWindow class, you need to get a reference to the MainWindow instance to be able to access it.

You should be able to find it in the Application.Current.Windows collection:

Private Sub Add_Click(sender As Object, e As RoutedEventArgs)
    Dim update = MainWindow.listArtikelstammdaten.Concat(CType(Import.ComparedAccessData, IEnumerable(Of Artikelstammdaten)))

    Dim window = Application.Current.Windows.OfType(Of MainWindow).FirstOrDefault()
    If window IsNot Nothing Then
        window.dgArticleMasterData.DataSource = update
    End If
    Me.Close()
End Sub

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