读写文本文件

  1using System;
  2using System.Drawing;
  3using System.Collections;
  4using System.ComponentModel;
  5using System.Windows.Forms;
  6using System.Data;
  7// 添加新的命名空间。
  8using System.IO;
  9using System.Text;
 10
 11namespace TextFile
 12{
 13    /**//// <summary>
 14    /// 处理文本文件。
 15    /// </summary>
 16    public class Form1 : System.Windows.Forms.Form
 17    {
 18        private System.Windows.Forms.Button button1;
 19        private System.Windows.Forms.Button button2;
 20        private System.Windows.Forms.RichTextBox richTextBox1;
 21        private System.Windows.Forms.TextBox textBox1;
 22        private System.Windows.Forms.Label label1;
 23        private System.Windows.Forms.OpenFileDialog openFileDialog1;
 24        private System.Windows.Forms.SaveFileDialog saveFileDialog1;
 25        /**//// <summary>
 26        /// 必需的设计器变量。
 27        /// </summary>
 28        private System.ComponentModel.Container components = null;
 29
 30        public Form1()
 31        {
 32            //
 33            // Windows 窗体设计器支持所必需的
 34            //
 35            InitializeComponent();
 36
 37            //
 38            // TODO: 在 InitializeComponent 调用后添加任何构造函数代码
 39            //
 40        }
 41
 42        /**//// <summary>
 43        /// 清理所有正在使用的资源。
 44        /// </summary>
 45        protected override void Dispose( bool disposing )
 46        {
 47            if( disposing )
 48            {
 49                if (components != null)
 50                {
 51                    components.Dispose();
 52                }
 53            }
 54            base.Dispose( disposing );
 55        }
 56
 57        Windows Form Designer generated code#region Windows Form Designer generated code
 58        /**//// <summary>
 59        /// 设计器支持所需的方法 - 不要使用代码编辑器修改
 60        /// 此方法的内容。
 61        /// </summary>
 62        private void InitializeComponent()
 63        {
 64            this.button1 = new System.Windows.Forms.Button();
 65            this.button2 = new System.Windows.Forms.Button();
 66            this.richTextBox1 = new System.Windows.Forms.RichTextBox();
 67            this.textBox1 = new System.Windows.Forms.TextBox();
 68            this.label1 = new System.Windows.Forms.Label();
 69            this.openFileDialog1 = new System.Windows.Forms.OpenFileDialog();
 70            this.saveFileDialog1 = new System.Windows.Forms.SaveFileDialog();
 71            this.SuspendLayout();
 72            //
 73            // button1
 74            //
 75            this.button1.Location = new System.Drawing.Point(248, 274);
 76            this.button1.Name = "button1";
 77            this.button1.TabIndex = 0;
 78            this.button1.Text = "读文件";
 79            this.button1.TextAlign = System.Drawing.ContentAlignment.TopCenter;
 80            this.button1.Click += new System.EventHandler(this.button1_Click);
 81            //
 82            // button2
 83            //
 84            this.button2.Location = new System.Drawing.Point(336, 274);
 85            this.button2.Name = "button2";
 86            this.button2.TabIndex = 1;
 87            this.button2.Text = "写文件";
 88            this.button2.TextAlign = System.Drawing.ContentAlignment.TopCenter;
 89            this.button2.Click += new System.EventHandler(this.button2_Click);
 90            //
 91            // richTextBox1
 92            //
 93            this.richTextBox1.Dock = System.Windows.Forms.DockStyle.Top;
 94            this.richTextBox1.Name = "richTextBox1";
 95            this.richTextBox1.ScrollBars = System.Windows.Forms.RichTextBoxScrollBars.ForcedBoth;
 96            this.richTextBox1.Size = new System.Drawing.Size(424, 264);
 97            this.richTextBox1.TabIndex = 2;
 98            this.richTextBox1.Text = "";
 99            this.richTextBox1.WordWrap = false;
100            //
101            // textBox1
102            //
103            this.textBox1.Location = new System.Drawing.Point(72, 272);
104            this.textBox1.Name = "textBox1";
105            this.textBox1.Size = new System.Drawing.Size(160, 25);
106            this.textBox1.TabIndex = 3;
107            this.textBox1.Text = "";
108            //
109            // label1
110            //
111            this.label1.AutoSize = true;
112            this.label1.Location = new System.Drawing.Point(8, 272);
113            this.label1.Name = "label1";
114            this.label1.Size = new System.Drawing.Size(60, 18);
115            this.label1.TabIndex = 4;
116            this.label1.Text = "文件名:";
117            //
118            // saveFileDialog1
119            //
120            this.saveFileDialog1.FileName = "doc1";
121            //
122            // Form1
123            //
124            this.AutoScaleBaseSize = new System.Drawing.Size(8, 18);
125            this.ClientSize = new System.Drawing.Size(424, 304);
126            this.Controls.AddRange(new System.Windows.Forms.Control[] {
127                  this.label1,
128                  this.textBox1,
129                  this.richTextBox1,
130                  this.button2,
131                  this.button1});
132            this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedDialog;
133            this.MaximizeBox = false;
134            this.Name = "Form1";
135            this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
136            this.Text = "处理文本文件";
137            this.ResumeLayout(false);
138        }
139        #endregion
140
141        /**//// <summary>
142        /// 应用程序的主入口点。
143        /// </summary>
144        [STAThread]
145        static void Main()
146        {
147            Application.Run(new Form1());
148        }
149        // 定义私有变量
150        // 读文件
151        public TextWriter w;
152        // 写文件
153        public TextReader r;
154        // 读文本文件
155        private void button1_Click(object sender, System.EventArgs e)
156        {
157            if(openFileDialog1.ShowDialog() == DialogResult.OK)
158            {
159                textBox1.Text = openFileDialog1.FileName;
160                r = new StreamReader(openFileDialog1.FileName);
161                richTextBox1.Text = r.ReadToEnd();
162                r.Close();
163            }
164        }
165        // 写文本文件
166        private void button2_Click(object sender, System.EventArgs e)
167        {
168            if(saveFileDialog1.ShowDialog() == DialogResult.OK)
169            {
170                textBox1.Text = saveFileDialog1.FileName;
171                w = new StreamWriter(saveFileDialog1.FileName);
172                w.Write(richTextBox1.Text);
173                w.Flush();
174                w.Close();
175            }
176        }
177    }
178}
179