C# 委托基础1.0

在C# 1.0中提出了一种新特性叫作：委托。委托本质上一种类型。是对特定方法的抽象，定义委托后，可以将方法封装，把方法当参数，传递

 using System;
 using System.Collections.Generic;
 using System.ComponentModel;
 using System.Data;
 using System.Drawing;
 using System.Linq;
 using System.Text;
 using System.Windows.Forms;

 namespace WindowsFormsTest
 {
     public partial class Form1 : Form
     {

         delegate void mydelget(RichTextBox gg);

         public Form1()
         {
             InitializeComponent();
         }

         private void button1_Click(object sender, EventArgs e)
         {
             mydelget my = new mydelget(this.WriteTextBox1);
             if (checkBox1.Checked == true)
             {
                 richTextBox1.Clear();
                 richTextBox1.Refresh();
                 //this.WriteTextBox1();
                 my(richTextBox1);
                 richTextBox1.Focus();
                 richTextBox1.SelectAll();
             }
             if (checkBox2.Checked == true)
             {
                 richTextBox2.Clear();
                 richTextBox2.Refresh();
                 //this.WriteTextBox2();
                 my(richTextBox2);
                 richTextBox2.Focus();
                 richTextBox2.SelectAll();
             }
         }

         public void WriteTextBox1(RichTextBox rich)
         {
             string data = textBox1.Text;
             for (int i = ; i < data.Length; i++)
             {
                 rich.AppendText(data[i].ToString());
                 //延时
                 DateTime now = DateTime.Now;
                 while (now.AddSeconds() > DateTime.Now)
                 {
                 }
             }
         }

         //public void WriteTextBox2()
         //{
         //    string data = textBox1.Text;
         //    for (int i = 0; i < data.Length; i++)
         //    {
         //        richTextBox2.AppendText(data[i].ToString());
         //        //延时
         //        DateTime now = DateTime.Now;
         //        while (now.AddSeconds(1) > DateTime.Now)
         //        {

         //        }
         //    }

         //}
     }
 }

运行结果：

通过WinForm小程序，探讨了一下委托。学习、理解委托是学习多线程的基础