东秦C#课设002-简单的文本编辑器

来源：互联网发布：c语言中函数中参数编辑：程序博客网时间：2024/05/24 04:57
//加入的拖拽属性失败，dropenter声明方法待查。using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Threading.Tasks;using System.Windows.Forms;using System.IO;namespace 实验2_文本编辑器{    public partial class Form1 : Form    {        public Form1()            {                InitializeComponent();                            }        //------------------               //-----------------        private void 打开ToolStripMenuItem_Click(object sender, EventArgs e)        {            OpenFileDialog ofd = new OpenFileDialog(); ofd.Title = "打开文件";            ofd.Filter = "文本文件(*.txt)|*.txt"; ofd.ShowDialog();            String fileName = ofd.FileName; if (File.Exists(fileName))            {                FileStream fs = new FileStream(fileName, FileMode.Open);                StreamReader sr = new StreamReader(fs, Encoding.Default);                 richTextBox1.Text = sr.ReadToEnd();                 sr.Close();                 fs.Close();            }         }        private void 保存ToolStripMenuItem_Click(object sender, EventArgs e)        {            SaveFileDialog sfd = new SaveFileDialog(); sfd.Title = "保存文件";            sfd.Filter = "文本文件(*.txt)|*.txt"; sfd.ShowDialog();            String fileName = sfd.FileName; if (File.Exists(fileName))            {                DialogResult result = MessageBox.Show("文件已存在，是否覆盖", "", MessageBoxButtons.YesNo, MessageBoxIcon.Question); if (result == DialogResult.Yes)                {                    FileStream fs = new FileStream(fileName, FileMode.Create); StreamWriter sw = new StreamWriter(fs, Encoding.Default); sw.WriteLine(richTextBox1.Text); sw.Close(); fs.Close();                }            }            else            {                FileStream fs = new FileStream(fileName, FileMode.Create);                StreamWriter sw = new StreamWriter(fs, Encoding.Default);                sw.WriteLine(richTextBox1.Text);                 sw.Close();                 fs.Close();            }         }        private void richTextBox1_TextChanged(object sender, EventArgs e)        {        }        //----------------        private void richTextBox1_DragEnter(object sender, EventArgs e)        {            if (((DragEventArgs)e).Data.GetDataPresent(DataFormats.FileDrop))            {                ((DragEventArgs)e).Effect = DragDropEffects.Link;                this.richTextBox1.Cursor = System.Windows.Forms.Cursors.Arrow;  //指定鼠标形状（更好看）            }            else            {                ((DragEventArgs)e).Effect = DragDropEffects.None;            }        }        private void textBox1_DragDrop(object sender, DragEventArgs e)        {            //GetValue(0) 为第1个文件全路径             //DataFormats 数据的格式，下有多个静态属性都为string型，除FileDrop格式外还有Bitmap,Text,WaveAudio等格式            string path = ((System.Array)e.Data.GetData(DataFormats.FileDrop)).GetValue(0).ToString();            richTextBox1.Text = path;            this.richTextBox1.Cursor = System.Windows.Forms.Cursors.IBeam; //还原鼠标形状        }        //----------------    }}
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