C#对TXT读写

C#操作TXT的实力，包括新建，删除，以及字符串处理

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;
using System.IO;

namespace WindowsFormsApplication6
{
    public partial class Form1 : Form
    {
        public Form1（）
        {
            InitializeComponent（）;
        }

        private void button1_Click（object sender EventArgs e）
        {

            textBox1.Text =“C:\\Users\\jack\\Desktop\\cass4.0数据格式\\“;
            textBox2.Text =“G:\\txt处理后\\“;

            
            string SourcePath=textBox1.Text;
            string DestinationPath = textBox2.Text;

            DirectoryInfo Directory = new DirectoryInfo（SourcePath）;

            foreach （FileInfo file in Directory.GetFiles（））
            {   
             
            StreamReader sr = new StreamReader（SourcePath + file.Name）;
            string[] lines = File.ReadAllLines（SourcePath + file.Name）;
            int a = 0;
            string Combina=““;

            List needs = new List（）;
            foreach（string line in lines）
            {
               // a=a+1;
               // string Combina=““;
                if （line.Length >4）
                {
                    needs.Add（line）; 
                }     
                   
            }
            needs.RemoveAt（0）;
            int count = 0;
            List Combination = new List（）;
            for （int y = 2; y <= needs.Count; y=y+2）
            {
                Combina =“355“+needs[y-1] +““ +“35“ + needs[y];    //合并
                count = count + 1;          //用来统计合并了多少个数据
                Combination.Add（Combina）;       //用另一个数组存储合并后数据
            }

            for （int z = 1; z <= count*2; z++）
            {
                needs.RemoveAt（1）;
            }

            for （int i = 0; i < Combination.Count; i++）
            {
                needs.Add（Combination[i]）;
            }
            
            WriteInTxt（DestinationPath + file.Name needs）;
             
                }


        }


        public static void WriteInTxt（string DestinationPathList needs）
        {
            string WriteInPath = DestinationPath;
            int NumberCount =needs.Count;
            int i=0;

            if （!File.Exists（WriteInPath））
            {
                FileStream fs1 = new FileStream（WriteInPath FileMode.Create FileAccess.Write）;//创建写入文件        
                StreamWriter sw = new StreamWriter（fs1）;
                for（i = 0;i < NumberCount ; i++）
                {

                    sw.WriteLine（needs[i]）;//开始写入值  
                }
                    
                sw.Close（）;
                fs1.Close（）;
            }
            else
            {
                FileStream fs = new FileStream（WriteInPath FileMode.Open FileAccess.Write）;
                Str

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----

     文件       9728  2014-10-24 09:47  txt读写\WindowsFormsApplication6\bin\Debug\WindowsFormsApplication6.exe

     文件      30208  2014-10-24 09:47  txt读写\WindowsFormsApplication6\bin\Debug\WindowsFormsApplication6.pdb

     文件      24224  2014-11-17 11:11  txt读写\WindowsFormsApplication6\bin\Debug\WindowsFormsApplication6.vshost.exe

     文件        490  2013-06-18 20:28  txt读写\WindowsFormsApplication6\bin\Debug\WindowsFormsApplication6.vshost.exe.manifest

     文件       3384  2014-10-24 09:47  txt读写\WindowsFormsApplication6\Form1.cs

     文件       2983  2014-10-22 16:14  txt读写\WindowsFormsApplication6\Form1.Designer.cs

     文件       5817  2014-10-22 16:14  txt读写\WindowsFormsApplication6\Form1.resx

     文件       5420  2014-10-22 16:35  txt读写\WindowsFormsApplication6\obj\x86\Debug\DesignTimeResolveAssemblyReferences.cache

     文件       7168  2014-11-17 11:11  txt读写\WindowsFormsApplication6\obj\x86\Debug\DesignTimeResolveAssemblyReferencesInput.cache

     文件       1258  2014-10-22 19:05  txt读写\WindowsFormsApplication6\obj\x86\Debug\WindowsFormsApplication6.csproj.FileListAbsolute.txt

     文件        975  2014-10-22 16:14  txt读写\WindowsFormsApplication6\obj\x86\Debug\WindowsFormsApplication6.csproj.GenerateResource.Cache

     文件       9174  2014-10-22 17:02  txt读写\WindowsFormsApplication6\obj\x86\Debug\WindowsFormsApplication6.csprojResolveAssemblyReference.cache

     文件       9728  2014-10-24 09:47  txt读写\WindowsFormsApplication6\obj\x86\Debug\WindowsFormsApplication6.exe

     文件        180  2014-10-22 16:14  txt读写\WindowsFormsApplication6\obj\x86\Debug\WindowsFormsApplication6.Form1.resources

     文件      30208  2014-10-24 09:47  txt读写\WindowsFormsApplication6\obj\x86\Debug\WindowsFormsApplication6.pdb

     文件        180  2014-10-22 16:14  txt读写\WindowsFormsApplication6\obj\x86\Debug\WindowsFormsApplication6.Properties.Resources.resources

     文件       1508  2014-11-17 11:11  txt读写\WindowsFormsApplication6\obj\x86\Debug\数据格式转化.csproj.FileListAbsolute.txt

     文件        975  2014-10-24 09:47  txt读写\WindowsFormsApplication6\obj\x86\Debug\数据格式转化.csproj.GenerateResource.Cache

     文件       9214  2014-10-24 09:47  txt读写\WindowsFormsApplication6\obj\x86\Debug\数据格式转化.csprojResolveAssemblyReference.cache

     文件        505  2014-10-22 15:49  txt读写\WindowsFormsApplication6\Program.cs

     文件       1380  2014-10-22 15:49  txt读写\WindowsFormsApplication6\Properties\AssemblyInfo.cs

     文件       2900  2014-10-22 15:49  txt读写\WindowsFormsApplication6\Properties\Resources.Designer.cs

     文件       5612  2014-10-22 15:49  txt读写\WindowsFormsApplication6\Properties\Resources.resx

     文件       1111  2014-10-22 15:49  txt读写\WindowsFormsApplication6\Properties\Settings.Designer.cs

     文件        249  2014-10-22 15:49  txt读写\WindowsFormsApplication6\Properties\Settings.settings

     文件       3707  2014-10-22 16:14  txt读写\WindowsFormsApplication6\数据格式转化.csproj

     文件        902  2014-10-22 19:07  txt读写\数据格式转化.sln

    ..A..H.     31232  2014-11-07 10:15  txt读写\数据格式转化.suo

    ..A..H.     53248  2014-11-17 11:59  txt读写\数据格式转化.v12.suo

     目录          0  2014-10-22 15:49  txt读写\WindowsFormsApplication6\obj\x86\Debug\TempPE

............此处省略11个文件信息