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一个d lookuo例子。。。 -

testform.cs
------------------------------------------------------------
using System;
using System.Drawing;
using System.Collectio
using System.ComponentModel;
using System.Windows.Form
using System.Net;

name ace testagain
{
/// < ummary>
/// Summary description for testform.
/// </summary>
ublic cla testform : System.Windows.Forms.Form
#123;
rivate System.Windows.Forms.TextBox txt_Domai
rivate System.Windows.Forms.Button btn_Find;
rivate System.Windows.Forms.Label lbl_result;
/// < ummary>
/// Required designer variable.
/// </summary>
rivate System.ComponentModel.Container components = null;

ublic testform(Form f_MainForm)
#123;
//
// Required for Windows Form Designer su ort
//
InitializeComponent();
this.MdiParent = f_MainForm;

//
// TODO: Add any co tructor code after InitializeComponent call
//
#125;

/// < ummary>
/// Clean up any resources being used.
/// </summary>
rotected override void Di ose( bool di osing )
#123;
if( di osing )
#123;
if(components != null)
#123;
components.Di ose();
#125;
#125;
ase.Di ose( di osing );
#125;

#region Windows Form Designer generated code
/// < ummary>
/// Required method for Designer su ort - do not modify
/// the contents of this method with the code editor.
/// </summary>
rivate void InitializeComponent()
#123;
this.txt_Domain = new System.Windows.Forms.TextBox();
this.lbl_result = new System.Windows.Forms.Label();
this.btn_Find = new System.Windows.Forms.Button();
this.Su endLayout();
//
// txt_Domain
//
this.txt_Domain.Location = new System.Drawing.Point(104, 56);
this.txt_Domain.Name = "txt_Domai quot
this.txt_Domain.Size = new System.Drawing.Size(240, 21);
this.txt_Domain.TabIndex = 1;
this.txt_Domain.Text = "www.yahoo.com"
//
// lbl_result
//
this.lbl_result.Location = new System.Drawing.Point(112, 112);
this.lbl_result.Name = "lbl_result"
this.lbl_result.Size = new System.Drawing.Size(336, 40);
this.lbl_result.TabIndex = 0;
//
// btn_Find
//
this.btn_Find.Location = new System.Drawing.Point(360, 56);
this.btn_Find.Name = " tn_Find"
this.btn_Find.Size = new System.Drawing.Size(72, 24);