UserControl Costruttore

Definizione

Spazio dei nomi:

System.Windows.Forms

Assembly:

System.Windows.Forms.dll

Inizializza una nuova istanza della classe UserControl.

public:
 UserControl();

public UserControl ();

Public Sub New ()

Esempio

Nell'esempio di codice seguente viene creata un'istanza UserControl della classe derivata , creata MyCustomerInfoUserControlnella sezione di esempio della panoramica della UserControl classe. Il controllo utente viene aggiunto a un Panel controllo e ha la relativa Dock proprietà impostata su DockStyle.Fill. Viene Panel quindi aggiunto a un Formoggetto .

public ref class MyUserControlHost: public System::Windows::Forms::Form
{
private:

   // Create the controls.
   System::ComponentModel::IContainer^ components;
   System::Windows::Forms::Panel^ panel1;
   UserControls::MyCustomerInfoUserControl^ myUserControl;

public:

   // Define the constructor.
   MyUserControlHost()
   {
      this->InitializeComponent();
   }


private:

   // Add a Panel control to a Form and host the UserControl in the Panel.
   void InitializeComponent()
   {
      components = gcnew System::ComponentModel::Container;
      panel1 = gcnew System::Windows::Forms::Panel;
      myUserControl = gcnew UserControls::MyCustomerInfoUserControl;
      
      // Set the DockStyle of the UserControl to Fill.
      myUserControl->Dock = System::Windows::Forms::DockStyle::Fill;
      
      // Make the Panel the same size as the UserControl and give it a border.
      panel1->BorderStyle = System::Windows::Forms::BorderStyle::FixedSingle;
      panel1->Size = myUserControl->Size;
      panel1->Location = System::Drawing::Point( 5, 5 );
      
      // Add the user control to the Panel.
      panel1->Controls->Add( myUserControl );
      
      // Size the Form to accommodate the Panel.
      this->ClientSize = System::Drawing::Size( panel1->Size.Width + 10, panel1->Size.Height + 10 );
      this->Text = "Please enter the information below...";
      
      // Add the Panel to the Form.
      this->Controls->Add( panel1 );
   }
};
// End Class

[System::STAThreadAttribute]
int main()
{
   System::Windows::Forms::Application::Run( gcnew MyUserControlHost );
}

using System;
using System.Drawing;
using System.Windows.Forms;
using System.ComponentModel;
using UserControls;

namespace MyApplication 
{

   public class MyUserControlHost : System.Windows.Forms.Form 
   {
      // Create the controls.
      private System.ComponentModel.IContainer components;
      private System.Windows.Forms.Panel panel1;
      private UserControls.MyCustomerInfoUserControl myUserControl;

      // Define the constructor.
      public MyUserControlHost() 
      {
         this.InitializeComponent();
      }
        
      [System.STAThreadAttribute()]
      public static void Main() 
      {
         System.Windows.Forms.Application.Run(new MyUserControlHost());
      }
        
      // Add a Panel control to a Form and host the UserControl in the Panel.
      private void InitializeComponent() 
      {
         components = new System.ComponentModel.Container();
         panel1 = new System.Windows.Forms.Panel();
         myUserControl = new UserControls.MyCustomerInfoUserControl();
         // Set the DockStyle of the UserControl to Fill.
         myUserControl.Dock = System.Windows.Forms.DockStyle.Fill;

         // Make the Panel the same size as the UserControl and give it a border.
         panel1.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
         panel1.Size = myUserControl.Size;
         panel1.Location = new System.Drawing.Point(5, 5);
         // Add the user control to the Panel.
         panel1.Controls.Add(myUserControl);
         // Size the Form to accommodate the Panel.
         this.ClientSize = new System.Drawing.Size(
            panel1.Size.Width + 10, panel1.Size.Height + 10);
         this.Text = "Please enter the information below...";
         // Add the Panel to the Form.
         this.Controls.Add(panel1);
      }   
   } // End Class
} // End Namespace

Imports System.Drawing
Imports System.Windows.Forms
Imports System.ComponentModel
Imports UserControls

Namespace MyApplication    
    
    Public Class MyUserControlHost
        Inherits System.Windows.Forms.Form

        ' Create the controls.
        Private components As System.ComponentModel.IContainer
        Private panel1 As System.Windows.Forms.Panel
        Private myUserControl As UserControls.MyCustomerInfoUserControl
                
        ' Define the constructor.
        Public Sub New()
            Me.InitializeComponent()
        End Sub        
        
        <System.STAThreadAttribute()> _
        Public Shared Sub Main()
            System.Windows.Forms.Application.Run(New MyUserControlHost())
        End Sub        
        
        ' Add a Panel control to a Form and host the UserControl in the Panel.
        Private Sub InitializeComponent()
            components = New System.ComponentModel.Container()
            panel1 = New System.Windows.Forms.Panel()
            myUserControl = New UserControls.MyCustomerInfoUserControl()
            ' Set the DockStyle of the UserControl to Fill.
            myUserControl.Dock = System.Windows.Forms.DockStyle.Fill
            
            ' Make the Panel the same size as the UserControl and give it a border.
            panel1.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle
            panel1.Size = myUserControl.Size
            panel1.Location = New System.Drawing.Point(5, 5)
            ' Add the user control to the Panel.
            panel1.Controls.Add(myUserControl)
            ' Size the Form to accommodate the Panel.
            Me.ClientSize = New System.Drawing.Size(panel1.Size.Width + 10, panel1.Size.Height + 10)
            Me.Text = "Please enter the information below..."
            ' Add the Panel to the Form.
            Me.Controls.Add(panel1)
        End Sub
    End Class
End Namespace

Commenti

In genere non si crea un'istanza di UserControl. Per creare una classe di controllo utente personalizzata, ereditare dalla UserControl classe .