EventDescriptorCollection.Find(String, Boolean) 方法

定义

命名空间:

System.ComponentModel

程序集:

System.ComponentModel.TypeConverter.dll

Source:

EventDescriptorCollection.cs

获取集合中具有指定名称的事件的说明。

public:
 virtual System::ComponentModel::EventDescriptor ^ Find(System::String ^ name, bool ignoreCase);

public virtual System.ComponentModel.EventDescriptor? Find (string name, bool ignoreCase);

abstract member Find : string * bool -> System.ComponentModel.EventDescriptor
override this.Find : string * bool -> System.ComponentModel.EventDescriptor

Public Overridable Function Find (name As String, ignoreCase As Boolean) As EventDescriptor

参数

name

String

要从集合中获取的事件的名称。

ignoreCase

Boolean

如果要忽略事件的大小写，则为 true；否则为 false。

返回

EventDescriptor

具有指定名称的 EventDescriptor，或者如果该事件不存在，则为 null。

示例

下面的代码示例查找特定的 EventDescriptor。 它会在文本框中打印此 EventDescriptor 组件的类型。 它要求 button1 和 textBox1 已在窗体上实例化。

private:
   void FindEvent()
   {
      // Creates a new collection and assigns it the events for button1.
      EventDescriptorCollection^ events = TypeDescriptor::GetEvents( button1 );
      
      // Sets an EventDescriptor to the specific event.
      EventDescriptor^ myEvent = events->Find( "Resize", false );
      
      // Prints the event name and event description.
      textBox1->Text = String::Concat( myEvent->Name, ": ", myEvent->Description );
   }

private void FindEvent() {
    // Creates a new collection and assigns it the events for button1.
    EventDescriptorCollection events = TypeDescriptor.GetEvents(button1);
 
    // Sets an EventDescriptor to the specific event.
    EventDescriptor myEvent = events.Find("Resize", false);
 
    // Prints the event name and event description.
    textBox1.Text = myEvent.Name + ": " + myEvent.Description;
 }

Private Sub FindEvent()
    ' Creates a new collection and assigns it the events for button1.
    Dim events As EventDescriptorCollection = TypeDescriptor.GetEvents(button1)
    
    ' Sets an EventDescriptor to the specific event.
    Dim myEvent As EventDescriptor = events.Find("Resize", False)
    
    ' Prints the event name and event description.
    textBox1.Text = myEvent.Name & ": " & myEvent.Description
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。

另请参阅

• EventDescriptor
• TypeDescriptor