在wpf vb.net中隱藏Datagrid行

Question

問題是我需要根據顯示的監視器隱藏DataGrid的某些行。

這是我的代碼：

For Each row As DataRowView In DataGrid1.Items
        cellValue = row.Item("Monitor")
        If cellValue.StartsWith("B") Then
                //the code i need   
        End If
Next

無法使用DataGrid1.Items.Remove()或DataGrid1.Items.RemoveAt() ，因為調用它們時正在使用我的ItemSource。

我更喜歡將其可見性更改為“隱藏”或將“高度”更改為0。

很抱歉，如果這個問題的格式不正確或看起來很糟糕，這是我的第一個：P（歡迎任何提示）

提前致謝

Answer 1

這應該為您工作：

row.Visibility = Windows.Visibility.Collapsed

PS：
在我的范圍內，DataGrid綁定到一個List(Of String)所以我必須先獲取該行。 因此，在使用DataGrid.Items(i)您只會得到本身為String 。

要獲取相關的DataGridRow您必須使用以下函數：

DataGrid.ItemContainerGenerator.ContainerFromIndex(IndexOfItem)

Answer 2

將我的代碼更改為：

Dim numOfRows As Integer
Dim listA As New List(Of Integer)
Dim listB As New List(Of Integer)
Dim deleted As Integer = 0



For Each row As DataRowView In DataGrid1.Items
        numOfRows += 1       'Adding up to total number of rows'
        If row.Item("Monitor").ToString.StartsWith("A") Then
            listA.Add(numOfRows - 1)  'Adding rows indexes to a list'
        ElseIf row.Item("Monitor").ToString.StartsWith("B") Then
            listB.Add(numOfRows - 1)  'Adding rows indexes to a list'
        End If
Next

我不使用row.Delete()的原因是，如果我在運行時更改其項目源，則For Each循環會中斷。 因此，我要刪除另一個循環中的行（每個監視器一個）：

Dim rowA As DataRowView
    For Each litem As Integer In listA
        litem -= deleted 

        'The indexes on the list were added in a sorted order'
        'ex. {4,7,14,28,39} . So if i delete the fourth row'
        'all of the rows that remain will have their index'
        'decreased by one,so by using an integer that represents'
        'the number of the deleted rows, i can always delete the'
        'correct "next" row'

        rowA = DataGrid1.Items.Item(litem)
        rowA.Delete()


        deleted += 1
Next