EventDescriptorCollection.GetEnumerator 方法
定义
重要
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获取此 EventDescriptorCollection 的枚举器。
public:
System::Collections::IEnumerator ^ GetEnumerator();public:
virtual System::Collections::IEnumerator ^ GetEnumerator();public System.Collections.IEnumerator GetEnumerator ();member this.GetEnumerator : unit -> System.Collections.IEnumeratorabstract member GetEnumerator : unit -> System.Collections.IEnumerator
override this.GetEnumerator : unit -> System.Collections.IEnumeratorPublic Function GetEnumerator () As IEnumerator返回
实现 IEnumerator 的枚举数。
实现
示例
下面的代码示例获取 上 button1事件的枚举器。 它使用 枚举器打印集合中事件的名称。 它要求 button1 和 textBox1 已在窗体上实例化。
private:
void MyEnumerator()
{
// Creates a new collection, and assigns to it the events for button1.
EventDescriptorCollection^ events = TypeDescriptor::GetEvents( button1 );
// Creates an enumerator.
IEnumerator^ ie = events->GetEnumerator();
// Prints the name of each event in the collection.
Object^ myEvent;
while ( ie->MoveNext() == true )
{
myEvent = ie->Current;
textBox1->Text = String::Concat( textBox1->Text, myEvent, "\n" );
}
}
private void MyEnumerator() {
// Creates a new collection, and assigns to it the events for button1.
EventDescriptorCollection events = TypeDescriptor.GetEvents(button1);
// Creates an enumerator.
IEnumerator ie = events.GetEnumerator();
// Prints the name of each event in the collection.
Object myEvent;
while(ie.MoveNext() == true) {
myEvent = ie.Current;
textBox1.Text += myEvent.ToString() + '\n';
}
}
Private Sub MyEnumerator()
' Creates a new collection, and assigns to it the events for button1.
Dim events As EventDescriptorCollection = TypeDescriptor.GetEvents(button1)
' Creates an enumerator.
Dim ie As IEnumerator = events.GetEnumerator()
' Prints the name of each event in the collection.
Dim myEvent As Object
While ie.MoveNext() = True
myEvent = ie.Current
textBox1.Text += myEvent.ToString() & ControlChars.Cr
End While
End Sub
注解
注意
HostProtectionAttribute应用于此类的属性具有以下Resources属性值：Synchronization。 HostProtectionAttribute 不影响桌面应用程序（通常通过双击图标、键入命令或在浏览器中输入 URL 来启动这些应用程序）。 有关详细信息，请参阅 HostProtectionAttribute 类或SQL Server编程和主机保护属性。
