form1.cs

原代码详细说明是关于c++方面的希望可以帮助大家使用

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.IO;
namespace Exam5_4
{
	/// <summary>
	/// Form1 的摘要说明。
	/// </summary>
	public class Form1 : System.Windows.Forms.Form
	{
		private System.Windows.Forms.MainMenu mainMenu1;
		private System.Windows.Forms.MenuItem menuItem1;
		private System.Windows.Forms.MenuItem menuItem2;
		private System.Windows.Forms.MenuItem menuItem3;
		private System.Windows.Forms.MenuItem menuItem4;
		private System.Windows.Forms.MenuItem menuItem5;
		private System.Windows.Forms.MenuItem menuItem6;
		private System.Windows.Forms.TextBox textBox1;
		/// <summary>
		/// 必需的设计器变量。
		/// </summary>
		private System.ComponentModel.Container components = null;

		public Form1()
		{
			//
			// Windows 窗体设计器支持所必需的
			//
			InitializeComponent();

			//
			// TODO: 在 InitializeComponent 调用后添加任何构造函数代码
			//
		}

		/// <summary>
		/// 清理所有正在使用的资源。
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if (components != null) 
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}

		#region Windows 窗体设计器生成的代码
		/// <summary>
		/// 设计器支持所需的方法 - 不要使用代码编辑器修改
		/// 此方法的内容。
		/// </summary>
		private void InitializeComponent()
		{
			this.mainMenu1 = new System.Windows.Forms.MainMenu();
			this.menuItem1 = new System.Windows.Forms.MenuItem();
			this.menuItem2 = new System.Windows.Forms.MenuItem();
			this.menuItem3 = new System.Windows.Forms.MenuItem();
			this.menuItem4 = new System.Windows.Forms.MenuItem();
			this.menuItem5 = new System.Windows.Forms.MenuItem();
			this.menuItem6 = new System.Windows.Forms.MenuItem();
			this.textBox1 = new System.Windows.Forms.TextBox();
			this.SuspendLayout();
			// 
			// mainMenu1
			// 
			this.mainMenu1.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
																					  this.menuItem1});
			// 
			// menuItem1
			// 
			this.menuItem1.Index = 0;
			this.menuItem1.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
																					  this.menuItem2,
																					  this.menuItem3,
																					  this.menuItem4,
																					  this.menuItem5,
																					  this.menuItem6});
			this.menuItem1.Text = "文件(&F)";
			// 
			// menuItem2
			// 
			this.menuItem2.Index = 0;
			this.menuItem2.Shortcut = System.Windows.Forms.Shortcut.CtrlN;
			this.menuItem2.Text = "新建(&N)";
			this.menuItem2.Click += new System.EventHandler(this.menuItem2_Click);
			// 
			// menuItem3
			// 
			this.menuItem3.Index = 1;
			this.menuItem3.Shortcut = System.Windows.Forms.Shortcut.CtrlO;
			this.menuItem3.Text = "打开(&O)";
			this.menuItem3.Click += new System.EventHandler(this.menuItem3_Click);
			// 
			// menuItem4
			// 
			this.menuItem4.Index = 2;
			this.menuItem4.Text = "保存(&S)";
			this.menuItem4.Click += new System.EventHandler(this.menuItem4_Click);
			// 
			// menuItem5
			// 
			this.menuItem5.Index = 3;
			this.menuItem5.Text = "-";
			// 
			// menuItem6
			// 
			this.menuItem6.Index = 4;
			this.menuItem6.Text = "退出(&X)";
			// 
			// textBox1
			// 
			this.textBox1.Dock = System.Windows.Forms.DockStyle.Fill;
			this.textBox1.Location = new System.Drawing.Point(0, 0);
			this.textBox1.Multiline = true;
			this.textBox1.Name = "textBox1";
			this.textBox1.Size = new System.Drawing.Size(395, 206);
			this.textBox1.TabIndex = 0;
			this.textBox1.Text = "";
			// 
			// Form1
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
			this.ClientSize = new System.Drawing.Size(395, 206);
			this.Controls.Add(this.textBox1);
			this.Menu = this.mainMenu1;
			this.Name = "Form1";
			this.Text = "文本编辑器";
			this.ResumeLayout(false);

		}
		#endregion

		/// <summary>
		/// 应用程序的主入口点。
		/// </summary>
		[STAThread]
		static void Main() 
		{
			Application.Run(new Form1());
		}

		private void menuItem2_Click(object sender, System.EventArgs e)
		{
			textBox1.Text="";
		}

		private void menuItem3_Click(object sender, System.EventArgs e)
		{	
			OpenFileDialog ofd=new OpenFileDialog();
			ofd.Filter="所有文件(*.*)|*.*|文本文件(*.txt)|*.txt";
			if(ofd.ShowDialog()==DialogResult.OK)
			{
				StreamReader sr=new StreamReader(ofd.FileName,System.Text.Encoding.Unicode);
				textBox1.Text="";
				while(sr.Peek()>-1)
				{
					string s=sr.ReadLine();
					textBox1.Text=textBox1.Text+s+"\r\n";
				}
				sr.Close();
			}
		}
		private void menuItem4_Click(object sender, System.EventArgs e)
		{
			SaveFileDialog ofd=new SaveFileDialog();
			ofd.Filter="文本文件(*.txt)|*.txt";
			if(ofd.ShowDialog()==DialogResult.OK)
			{
				FileStream fs=new FileStream(ofd.FileName,FileMode.OpenOrCreate,FileAccess.Write);
	            StreamWriter sw=new StreamWriter(fs,System.Text.Encoding.Unicode);
				sw.Write(textBox1.Text);
				sw.Flush();
				sw.Close();
			}
		}

	}
}