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.NET Framework Class Library
UserControl Constructor

Initializes a new instance of the UserControl class.

Namespace: System.Windows.Forms
Assembly: System.Windows.Forms (in System.Windows.Forms.dll)
Syntax
Public Sub New
public UserControl()
public:
UserControl()
new : unit -> UserControl
Remarks

You do not typically create an instance of UserControl. To create your own user control class, inherit from the UserControl class.

Examples

The following code example creates an instance of the UserControl derived class, MyCustomerInfoUserControl, which was created in the example section of the UserControl class overview. The user control is added to a Panel control and has its Dock property set to DockStyle..::.Fill. The Panel is then added to a Form.


Imports System
Imports System.Drawing
Imports System.Windows.Forms
Imports System.ComponentModel
Imports Microsoft.VisualBasic
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


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


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 );
}

Version Information

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1
Platforms

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.