ToolboxComponentsCreatingEventHandler Delegasikan

Definisi

Ruang nama:

System.Drawing.Design

Rakitan:

System.Windows.Forms.Design.dll

Mewakili metode yang menangani ComponentsCreating peristiwa.

public delegate void ToolboxComponentsCreatingEventHandler(System::Object ^ sender, ToolboxComponentsCreatingEventArgs ^ e);

public delegate void ToolboxComponentsCreatingEventHandler(object sender, ToolboxComponentsCreatingEventArgs e);

type ToolboxComponentsCreatingEventHandler = delegate of obj * ToolboxComponentsCreatingEventArgs -> unit

Public Delegate Sub ToolboxComponentsCreatingEventHandler(sender As Object, e As ToolboxComponentsCreatingEventArgs)

Parameter

sender

Object

Sumber dari peristiwa tersebut.

e

ToolboxComponentsCreatingEventArgs

ToolboxComponentsCreatingEventArgs yang menyediakan data untuk peristiwa tersebut.

Contoh

Contoh kode berikut menyediakan metode yang melampirkan penanganan aktivitas untuk ComponentsCreating peristiwa , dan ToolboxComponentsCreatingEventHandler metode penanganan aktivitas yang menulis nama jenis komponen yang akan menerima komponen atau komponen baru ke Console saat penanganan aktivitas dinaikkan oleh peristiwa ComponentsCreatingToolboxItem.

public:
   [PermissionSetAttribute(SecurityAction::Demand, Name="FullTrust")]
   void LinkToolboxComponentsCreatingEvent( ToolboxItem^ item )
   {
      item->ComponentsCreating +=
         gcnew ToolboxComponentsCreatingEventHandler( this, &Form1::OnComponentsCreating );
   }

private:
   void OnComponentsCreating( Object^ sender, ToolboxComponentsCreatingEventArgs^ e )
   {
      // Displays ComponentsCreating event information on the Console.
      Console::WriteLine( "Name of the class of the root component of " +
         "the designer host receiving new components: " +
         e->DesignerHost->RootComponentClassName );
   }

public void LinkToolboxComponentsCreatingEvent(ToolboxItem item)
{
    item.ComponentsCreating += new ToolboxComponentsCreatingEventHandler(this.OnComponentsCreating);
}

private void OnComponentsCreating(object sender, ToolboxComponentsCreatingEventArgs e)
{
    // Displays ComponentsCreating event information on the Console.
    Console.WriteLine("Name of the class of the root component of " +
    "the designer host receiving new components: " +
    e.DesignerHost.RootComponentClassName);
}

Public Sub LinkToolboxComponentsCreatingEvent(ByVal item As ToolboxItem)
    AddHandler item.ComponentsCreating, AddressOf Me.OnComponentsCreating
End Sub

Private Sub OnComponentsCreating(ByVal sender As Object, ByVal e As ToolboxComponentsCreatingEventArgs)
    ' Displays ComponentsCreating event information on the Console.
    Console.WriteLine(("Name of the class of the root component of the designer host receiving new components: " + e.DesignerHost.RootComponentClassName))
End Sub

Keterangan

Saat membuat ToolboxComponentsCreatingEventHandler delegasi, Anda mengidentifikasi metode yang akan menangani peristiwa. Untuk mengaitkan peristiwa dengan penanganan aktivitas Anda, tambahkan instans delegasi ke peristiwa. Penanganan aktivitas dipanggil setiap kali peristiwa terjadi, kecuali Jika Anda menghapus delegasi. Untuk informasi selengkapnya tentang delegasi penanganan aktivitas, lihat Menangani dan Meningkatkan Peristiwa.

Metode Ekstensi

Lihat juga

• ToolboxComponentsCreatingEventArgs
• ComponentsCreating