BindingList<T>.AllowRemove 属性

定义

命名空间:

System.ComponentModel

程序集:

System.ComponentModel.TypeConverter.dll

Source:

BindingList.cs

获取或设置一个值，该值指示是否可以从集合中移除项。

public:
 property bool AllowRemove { bool get(); void set(bool value); };

public bool AllowRemove { get; set; }

member this.AllowRemove : bool with get, set

Public Property AllowRemove As Boolean

属性值

Boolean

如果可以使用 RemoveItem(Int32) 方法从列表中移除项，则为 true；否则为 false。 默认值为 true。

示例

下面的代码示例演示如何设置 AllowRemove 属性。 有关完整示例，请参阅 BindingList<T> 类概述主题。

    // Declare a new BindingListOfT with the Part business object.
    BindingList<Part> listOfParts; 
    private void InitializeListOfParts()
    {
        // Create the new BindingList of Part type.
        listOfParts = new BindingList<Part>();

        // Allow new parts to be added, but not removed once committed.        
        listOfParts.AllowNew = true;
        listOfParts.AllowRemove = false;

        // Raise ListChanged events when new parts are added.
        listOfParts.RaiseListChangedEvents = true;

        // Do not allow parts to be edited.
        listOfParts.AllowEdit = false;
        
        // Add a couple of parts to the list.
        listOfParts.Add(new Part("Widget", 1234));
        listOfParts.Add(new Part("Gadget", 5647));
    }

' Declare a new BindingListOfT with the Part business object.
Private WithEvents listOfParts As BindingList(Of Part)

Private Sub InitializeListOfParts()

    ' Create the new BindingList of Part type.
    listOfParts = New BindingList(Of Part)

    ' Allow new parts to be added, but not removed once committed.        
    listOfParts.AllowNew = True
    listOfParts.AllowRemove = False

    ' Raise ListChanged events when new parts are added.
    listOfParts.RaiseListChangedEvents = True

    ' Do not allow parts to be edited.
    listOfParts.AllowEdit = False

    ' Add a couple of parts to the list.
    listOfParts.Add(New Part("Widget", 1234))
    listOfParts.Add(New Part("Gadget", 5647))

End Sub

注解

属性 AllowRemove 通常由其他组件用于确定是否允许删除项。

当 设置为新值时 AllowRemove ， ListChanged 会发生 类型 Reset 为 的事件。

另请参阅

• RemoveItem(Int32)
• AllowEdit
• AllowNew