C#中的TextBox GUI编程

-1 c# user-interface textbox winforms

我正在尝试用C#学习GUI编程,我对C#中TextBox的默认代码有以下问题:

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 WindowsFormsApplication34
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void textBox1_TextChanged(object sender, EventArgs e)
        {
         // Textbox programming goes here
        }
    }
}
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现在,当我想尝试与TexBox编程有点不同的东西时,类似于这段代码

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 WindowsFormsApplication20
{
    public partial class Form1 : Form
    {
    public Form1()
    {
        InitializeComponent();
    }

    private void textBox1_KeyDown(object sender, KeyEventArgs e)
    {
        //
        // Detect the KeyEventArg's key enumerated constant.
        //
        if (e.KeyCode == Keys.Enter)
        {
        MessageBox.Show("You pressed enter! Good job!");
        }
        else if (e.KeyCode == Keys.Escape)
        {
        MessageBox.Show("You pressed escape! What's wrong?");
        }
    }
    }
}
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我无法运行代码,因为TextBox的状态是

textBox1_KeyDown
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而不是默认的

textBox1_TextChanged
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现在我的问题是,如何将TextBox事件处理程序从默认事件处理程序更改为另一个?

Jam*_*ass 6

KeyDown并且TextChanged是不同的事件.

不是双击文本框以输入事件代码,而是选择属性中的事件选项卡,然后双击要为其编写代码的事件.