C#编程

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AddressCtl.cs：源码内容
							using System;
using System.Collections;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Windows.Forms;
namespace UserControlSample
{
	/// <summary>
	/// Summary description for UserControl1.
	/// </summary>
	public class AddressCtl : System.Windows.Forms.UserControl
	{
    private System.Windows.Forms.TextBox txtAddress1;
    private System.Windows.Forms.TextBox txtAddress2;
    private System.Windows.Forms.TextBox txtCity;
    private System.Windows.Forms.TextBox txtState;
    private System.Windows.Forms.TextBox txtZip;
    private System.Windows.Forms.Label label1;
    private System.Windows.Forms.Label label2;
    private System.Windows.Forms.Label label3;
		/// <summary>
		/// Required designer variable.
		/// </summary>
		private System.ComponentModel.Container components = null;
    public event EventHandler AddressLine1Changed;
    public event EventHandler AddressLine2Changed;
    public event EventHandler CityChanged;
    public event EventHandler StateChanged;
    public event EventHandler ZipChanged;
    
		public AddressCtl()
		{
			// This call is required by the Windows.Forms Form Designer.
			InitializeComponent();
			// TODO: Add any initialization after the InitComponent call
		}
		/// <summary>
		/// Clean up any resources being used.
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if( components != null )
					components.Dispose();
			}
			base.Dispose( disposing );
		}
		#region Component Designer generated code
		/// <summary>
		/// Required method for Designer support - do not modify 
		/// the contents of this method with the code editor.
		/// </summary>
		private void InitializeComponent()
		{
      this.txtAddress1 = new System.Windows.Forms.TextBox();
      this.txtAddress2 = new System.Windows.Forms.TextBox();
      this.txtCity = new System.Windows.Forms.TextBox();
      this.txtState = new System.Windows.Forms.TextBox();
      this.txtZip = new System.Windows.Forms.TextBox();
      this.label1 = new System.Windows.Forms.Label();
      this.label2 = new System.Windows.Forms.Label();
      this.label3 = new System.Windows.Forms.Label();
      this.SuspendLayout();
      // 
      // txtAddress1
      // 
      this.txtAddress1.Location = new System.Drawing.Point(104, 8);
      this.txtAddress1.Name = "txtAddress1";
      this.txtAddress1.Size = new System.Drawing.Size(192, 20);
      this.txtAddress1.TabIndex = 0;
      this.txtAddress1.Text = "";
      this.txtAddress1.TextChanged += new System.EventHandler(this.TextBoxControls_TextChanged);
      // 
      // txtAddress2
      // 
      this.txtAddress2.Location = new System.Drawing.Point(104, 32);
      this.txtAddress2.Name = "txtAddress2";
      this.txtAddress2.Size = new System.Drawing.Size(192, 20);
      this.txtAddress2.TabIndex = 1;
      this.txtAddress2.Text = "";
      this.txtAddress2.TextChanged += new System.EventHandler(this.TextBoxControls_TextChanged);
      // 
      // txtCity
      // 
      this.txtCity.Location = new System.Drawing.Point(104, 56);
      this.txtCity.Name = "txtCity";
      this.txtCity.TabIndex = 2;
      this.txtCity.Text = "";
      this.txtCity.TextChanged += new System.EventHandler(this.TextBoxControls_TextChanged);
      // 
      // txtState
      // 
      this.txtState.Location = new System.Drawing.Point(208, 56);
      this.txtState.Name = "txtState";
      this.txtState.Size = new System.Drawing.Size(24, 20);
      this.txtState.TabIndex = 3;
      this.txtState.Text = "";
      this.txtState.TextChanged += new System.EventHandler(this.TextBoxControls_TextChanged);
      // 
      // txtZip
      // 
      this.txtZip.Location = new System.Drawing.Point(240, 56);
      this.txtZip.Name = "txtZip";
      this.txtZip.Size = new System.Drawing.Size(56, 20);
      this.txtZip.TabIndex = 4;
      this.txtZip.Text = "";
      this.txtZip.TextChanged += new System.EventHandler(this.TextBoxControls_TextChanged);
      // 
      // label1
      // 
      this.label1.Location = new System.Drawing.Point(16, 8);
      this.label1.Name = "label1";
      this.label1.Size = new System.Drawing.Size(80, 20);
      this.label1.TabIndex = 5;
      this.label1.Text = "Address Line 1 ";
      this.label1.TextAlign = System.Drawing.ContentAlignment.MiddleRight;
      // 
      // label2
      // 
      this.label2.Location = new System.Drawing.Point(16, 32);
      this.label2.Name = "label2";
      this.label2.Size = new System.Drawing.Size(80, 20);
      this.label2.TabIndex = 6;
      this.label2.Text = "Address Line 2 ";
      this.label2.TextAlign = System.Drawing.ContentAlignment.MiddleRight;
      // 
      // label3
      // 
      this.label3.Location = new System.Drawing.Point(8, 56);
      this.label3.Name = "label3";
      this.label3.Size = new System.Drawing.Size(88, 20);
      this.label3.TabIndex = 7;
      this.label3.Text = "City, State && Zip ";
      this.label3.TextAlign = System.Drawing.ContentAlignment.MiddleRight;
      // 
      // AddressCtl
      // 
      this.Controls.Add(this.label3);
      this.Controls.Add(this.label2);
      this.Controls.Add(this.label1);
      this.Controls.Add(this.txtZip);
      this.Controls.Add(this.txtState);
      this.Controls.Add(this.txtCity);
      this.Controls.Add(this.txtAddress2);
      this.Controls.Add(this.txtAddress1);
      this.Name = "AddressCtl";
      this.Size = new System.Drawing.Size(304, 88);
      this.ResumeLayout(false);
    }
		#endregion
    private void TextBoxControls_TextChanged(object sender, System.EventArgs e)
    {
      switch(((TextBox)sender).Name)
      {
        case "txtAddress1"  :
          if(AddressLine1Changed != null)
            AddressLine1Changed(this, EventArgs.Empty);
          break;
        case "txtAddress2" :
          if(AddressLine2Changed != null)
            AddressLine2Changed(this, EventArgs.Empty);
          break;
        case "txtCity" :
          if(CityChanged != null)
            CityChanged(this, EventArgs.Empty);
          break;
          case "txtState" :
            if(StateChanged != null)
              StateChanged(this, EventArgs.Empty);
            break;
          case "txtZip" :
            if(ZipChanged != null)
              ZipChanged(this, EventArgs.Empty);
            break;
      }
    }
    [Category("AddressData"), 
    Description("Gets or sets the AddressLine1 value"),
    DefaultValue("")]
    public string AddressLine1
    {
      get{return txtAddress1.Text;}
      set{
        if(txtAddress1.Text != value)
        {
          txtAddress1.Text = value;
          if(AddressLine1Changed != null)
            AddressLine1Changed(this, EventArgs.Empty);
        }
      }
    }
    public string AddressLine2
    {
      get{return txtAddress2.Text;}
      set{
        if(txtAddress2.Text != value)
        {
          txtAddress2.Text = value;
          if(AddressLine2Changed != null)
            AddressLine2Changed(this, EventArgs.Empty);
        }
      }
    }
    public string City
    {
      get{return txtCity.Text;}
      set{
        if(txtCity.Text != value)
        {
          txtCity.Text = value;
          if(CityChanged != null)
            CityChanged(this, EventArgs.Empty);
        }
      }
    }
    public string State
    {
      get{return txtState.Text;}
      set{
        if(txtState.Text != value)
        {
          txtState.Text = value;
          if(StateChanged != null)
            StateChanged(this, EventArgs.Empty);
        }
      }
    }
    public string Zip
    {
      get{return txtZip.Text;}
      set{
        if(txtZip.Text != value)
        {
          txtZip.Text = value;
          if(ZipChanged != null)
            ZipChanged(this, EventArgs.Empty);
        }
      }
    }
	}
}

						