UserControl コンストラクタとは何？わかりやすく解説 Weblio辞書

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

C++

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 );
}

package UserControls;

public class MyCustomerInfoUserControl extends
 System.Windows.Forms.UserControl
{
    // Create the controls.
    private System.Windows.Forms.ErrorProvider errorProvider1;
    private System.Windows.Forms.TextBox textName;
    private System.Windows.Forms.TextBox textAddress;
    private System.Windows.Forms.TextBox textCity;
    private System.Windows.Forms.TextBox textStateProvince;
    private System.Windows.Forms.TextBox textPostal;
    private System.Windows.Forms.TextBox textCountryRegion;
    private System.Windows.Forms.TextBox textEmail;
    private System.Windows.Forms.Label labelName;
    private System.Windows.Forms.Label labelAddress;
    private System.Windows.Forms.Label labelCityStateProvincePostal;
    private System.Windows.Forms.Label labelCountryRegion;
    private System.Windows.Forms.Label labelEmail;
    private System.ComponentModel.IContainer components;

    // Define the constructor.
    public MyCustomerInfoUserControl()
    {
        InitializeComponent();
    } //MyCustomerInfoUserControl

    // Initialize the control elements.
    public void InitializeComponent()
    {
        // Initialize the controls.
        components = new System.ComponentModel.Container();
        errorProvider1 = new System.Windows.Forms.ErrorProvider();
        textName = new System.Windows.Forms.TextBox();
        textAddress = new System.Windows.Forms.TextBox();
        textCity = new System.Windows.Forms.TextBox();
        textStateProvince = new System.Windows.Forms.TextBox();
        textPostal = new System.Windows.Forms.TextBox();
        textCountryRegion = new System.Windows.Forms.TextBox();
        textEmail = new System.Windows.Forms.TextBox();
        labelName = new System.Windows.Forms.Label();
        labelAddress = new System.Windows.Forms.Label();
        labelCityStateProvincePostal = new System.Windows.Forms.Label();
        labelCountryRegion = new System.Windows.Forms.Label();
        labelEmail = new System.Windows.Forms.Label();

        // Set the tab order, text alignment, size, 
        // and location of the controls.
        textName.set_Location(new System.Drawing.Point(120, 8));
        textName.set_Size(new System.Drawing.Size(232, 20));
        textName.set_TabIndex(0);
        textAddress.set_Location(new System.Drawing.Point(120,
 32));
        textAddress.set_Size(new System.Drawing.Size(232, 20));
        textAddress.set_TabIndex(1);
        textCity.set_Location(new System.Drawing.Point(120, 56));
        textCity.set_Size(new System.Drawing.Size(96, 20));
        textCity.set_TabIndex(2);
        textStateProvince.set_Location(new System.Drawing.Point(216,
 56));
        textStateProvince.set_Size(new System.Drawing.Size(56,
 20));
        textStateProvince.set_TabIndex(3);
        textPostal.set_Location(new System.Drawing.Point(272,
 56));
        textPostal.set_Size(new System.Drawing.Size(80, 20));
        textPostal.set_TabIndex(4);
        textCountryRegion.set_Location(new System.Drawing.Point(120,
 80));
        textCountryRegion.set_Size(new System.Drawing.Size(232,
 20));
        textCountryRegion.set_TabIndex(5);
        textEmail.set_Location(new System.Drawing.Point(120, 104));
        textEmail.set_Size(new System.Drawing.Size(232, 20));
        textEmail.set_TabIndex(6);
        labelName.set_Location(new System.Drawing.Point(8, 8));
        labelName.set_Size(new System.Drawing.Size(112, 23));
        labelName.set_Text("Name:");
        labelName.set_TextAlign(System.Drawing.ContentAlignment.MiddleRight);
        labelAddress.set_Location(new System.Drawing.Point(8,
 32));
        labelAddress.set_Size(new System.Drawing.Size(112, 23));
        labelAddress.set_Text("Address:");
        labelAddress.set_TextAlign(System.Drawing.ContentAlignment.MiddleRight);
        labelCityStateProvincePostal.set_Location(
            new System.Drawing.Point(8, 56));
        labelCityStateProvincePostal.set_Size(new System.Drawing.Size(112,
 23));
        labelCityStateProvincePostal.set_Text("City, St/Prov. Postal:");
        labelCityStateProvincePostal.set_TextAlign(
            System.Drawing.ContentAlignment.MiddleRight);
        labelCountryRegion.set_Location(new System.Drawing.Point(8,
 80));
        labelCountryRegion.set_Size(new System.Drawing.Size(112,
 23));
        labelCountryRegion.set_Text("Country/Region:");
        labelCountryRegion.set_TextAlign(
            System.Drawing.ContentAlignment.MiddleRight);
        labelEmail.set_Location(new System.Drawing.Point(8, 104));
        labelEmail.set_Size(new System.Drawing.Size(112, 23));
        labelEmail.set_Text("email:");
        labelEmail.set_TextAlign(System.Drawing.ContentAlignment.MiddleRight);

        // Add the Validating and Validated handlers for textEmail.
        textEmail.add_Validating(new System.ComponentModel.CancelEventHandler(
            textEmail_Validating));
        textEmail.add_Validated(new System.EventHandler(textEmail_Validated));

        // Add the controls to the user control.
        get_Controls().AddRange(new System.Windows.Forms.Control[]
 {
            labelName, labelAddress, labelCityStateProvincePostal, 
            labelCountryRegion, labelEmail, textName, textAddress, textCity,
            textStateProvince, textPostal, textCountryRegion, textEmail    
        });

        // Size the user control.
        set_Size(new System.Drawing.Size(375, 150));
    } //InitializeComponent

    private void MyValidatingCode() throws
 Exception
    {
        // Confirm there is text in the control.
        if (textEmail.get_Text().length() == 0) {
            throw new Exception("Email address is a required
 field.");
        }
        // Confirm that there is a "." and an "@"
 in the e-mail address.
        else {
            if (textEmail.get_Text().IndexOf(".") ==
 -1 ||
                    textEmail.get_Text().IndexOf("@") == -1) {
                throw new Exception("Email address must be
 valid e-mail "
                    + "address format."
                    + "\nFor example: 'someone@example.com'");
            }
        }
    } //MyValidatingCode

    // Validate the data input by the user into textEmail.
    private void textEmail_Validating(Object
 sender,
        System.ComponentModel.CancelEventArgs e)    
    {
        try {
            MyValidatingCode();
        }
        catch (System.Exception ex) {
            // Cancel the event and select the text to be corrected
 by the user.
            e.set_Cancel(true);
            textEmail.Select(0, textEmail.get_Text().length());

            // Set the ErrorProvider error with the text to display.
 
            this.errorProvider1.SetError(textEmail, ex.get_Message());
        }
    } //textEmail_Validating

    private void textEmail_Validated(Object
 sender, System.EventArgs e)
    {
        //If all conditions have been met, clear the error provider
 of errors.
        errorProvider1.SetError(textEmail, "");
    } //textEmail_Validated
} //MyCustomerInfoUserControl

package MyApplication ;

import System.*;
import System.Drawing.*;
import System.Windows.Forms.*;
import System.ComponentModel.*;
import UserControls.*;

public class MyUserControlHost extends 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();
    } //MyUserControlHost

    /** @attribute System.STAThreadAttribute()
     */
    public static void main(String[]
 args)
    {
        System.Windows.Forms.Application.Run(new MyUserControlHost());
    } //main

    // 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.set_Dock(System.Windows.Forms.DockStyle.Fill);

        // Make the Panel the same size as the UserControl and give it
 a border.
        panel1.set_BorderStyle(BorderStyle.FixedSingle);
        panel1.set_Size(myUserControl.get_Size());
        panel1.set_Location(new System.Drawing.Point(5, 5));

        // Add the user control to the Panel.
        panel1.get_Controls().Add(myUserControl);

        // Size the Form to accommodate the Panel.
        this.set_ClientSize(new System.Drawing.Size(
            panel1.get_Size().get_Width() + 10,
            panel1.get_Size().get_Height() + 10));
        this.set_Text("Please enter the information below...");

        // Add the Panel to the Form.
        this.get_Controls().Add(panel1);
    } //InitializeComponent
} //MyUserControlHost