UserControl 构造函数

定义

命名空间:

System.Windows.Forms

程序集:

System.Windows.Forms.dll

初始化 UserControl 类的新实例。

public:
 UserControl();

public UserControl ();

Public Sub New ()

示例

下面的代码示例创建派生类的 UserControl 实例， MyCustomerInfoUserControl该实例是在类概述的示例 UserControl 部分中创建的。 用户控件将添加到控件， Panel 并将其 Dock 属性设置为 DockStyle.Fill。 Panel然后将 添加到 Form。

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

注解

通常不会创建 的 UserControl实例。 若要创建自己的用户控件类，请从 UserControl 类继承。