如何確定WPF DataGrid是否處於編輯模式？

Question

可能重複：
Code to check if a cell of a DataGrid is currently edited

有沒有一種方法來確定一個WPF DataGrid中是否在編輯模式/哪一行當前編輯的？

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EDIT 重複：Code to check if a cell of a DataGrid is currently edited

Answer 1

VB.NET

<Extension> 
Public Function GetContainerFromIndex(Of TContainer As DependencyObject) _ 
    (ByVal itemsControl As ItemsControl, ByVal index As Integer) As TContainer 
    Return DirectCast(
    itemsControl.ItemContainerGenerator.ContainerFromIndex(index), TContainer) 
End Function 

<Extension> 
Public Function IsEditing(ByVal dataGrid As DataGrid) As Boolean 
    Return dataGrid.GetEditingRow IsNot Nothing 
End Function 

<Extension> 
Public Function GetEditingRow(ByVal dataGrid As DataGrid) As DataGridRow 
    Dim sIndex = dataGrid.SelectedIndex 
    If sIndex >= 0 Then 
    Dim selected = dataGrid.GetContainerFromIndex(Of DataGridRow)(sIndex) 
    If selected.IsEditing Then Return selected 
    End If 

    For i = 0 To dataGrid.Items.Count - 1 
    If i = sIndex Then Continue For 
    Dim item = dataGrid.GetContainerFromIndex(Of DataGridRow)(i) 
    If item.IsEditing Then Return item 
    Next 

    Return Nothing 
End Function 

C＃：

public static TContainer GetContainerFromIndex<TContainer> 
    (this ItemsControl itemsControl, int index) 
    where TContainer : DependencyObject 
{ 
    return (TContainer) 
    itemsControl.ItemContainerGenerator.ContainerFromIndex(index); 
} 

public static bool IsEditing(this DataGrid dataGrid) 
{ 
    return dataGrid.GetEditingRow() != null; 
} 

public static DataGridRow GetEditingRow(this DataGrid dataGrid) 
{ 
    var sIndex = dataGrid.SelectedIndex; 
    if (sIndex >= 0) 
    { 
    var selected = dataGrid.GetContainerFromIndex<DataGridRow>(sIndex); 
    if (selected.IsEditing) return selected; 
    } 

    for (int i = 0; i < dataGrid.Items.Count; i++) 
    { 
    if (i == sIndex) continue; 
    var item = dataGrid.GetContainerFromIndex<DataGridRow>(i); 
    if (item.IsEditing) return item; 
    } 

    return null; 
}