请教如何在C#中删除一个文本文件最后一行请教如何在C#中删除一个文本文件最后一行..呵呵
回答1：参考这个：
tomedwardhn
回答2：参考 如下
byte[] buffer1,buffer2;
int iPosition=0;
FileStream fs = new FileStream(@ &C:\test.txt &,FileMode.Open, FileAccess.ReadWrite);
if (fs.Length& =1)
buffer1 = new byte[fs.Length];
fs.Seek(0, SeekOrigin.Begin);
fs.Read(buffer1, 0, buffer1.Length);
for (int i = buffer1.Length - 1; i & = 0; i--)
if (buffer1[i] == 10)//判断是否换行符
iPosition =
buffer2 = new byte[iPosition];
for (int i = 0; i
& buffer2.Length-1; i++)
buffer2[i] = buffer1[i];
fs.Close();
File.Delete(@ &C:\test.txt &);
fs = new FileStream(@ &C:\temp.txt &,FileMode.CreateNew);
fs.Seek(0, SeekOrigin.Begin);
fs.Write(buffer2, 0, buffer2.Length);
fs.Close();
File.Move(@ &C:\temp.txt &, @ &C:\test.txt &);
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太困了 写的不是很严谨 还有些情况没有写出判断
例如 最末尾是换行符的情况
tomedwardcn
回答3：其实还是要从第一行访问起，直到最后一行！
回答4：楼上兄弟给的很详细了
回答5：sealed class program{
static void Main(){
string fileName = @ &c:\test.txt &;
string[] allLines = System.IO.File.ReadAllLines(fileName);
System.Array.Resize(ref allLines, allLines.Length - 1);
System.IO.File.WriteAllLines(fileName, allLines);
// only for .net v2.0
hubeiapple
回答6：在C/C++下好像有相应的函数,,
hubeirenliming
回答7：private void delete()
private ArrayList _arrBarcode = new ArrayList();
if (System.IO.File.Exists( &文件 &))
System.IO.StreamReader objectReader = new System.IO.StreamReader( &文件 &, System.Text.Encoding.UTF8);
while (sLine != null)
sLine = objectReader.ReadLine();
if (sLine != null)
_arrBarcode.Add(sLine);
objectReader.Close();
回答8：private void delete()
private ArrayList _arrBarcode = new ArrayList();
private string sLine =
if (System.IO.File.Exists( &文件 &))
System.IO.StreamReader objectReader = new System.IO.StreamReader( &文件 &, System.Text.Encoding.UTF8);
while (sLine != null)
sLine = objectReader.ReadLine();
if (sLine != null)
_arrBarcode.Add(sLine);
objectReader.Close();
_arrBarcode.RemoveAt(_arrBarcode.Count - 1);
if (_arrBarcode.Count &
System.IO.StreamWriter objectWriter = new System.IO.StreamWriter( &文件, false, System.Text.Encoding.UTF8);
for (int i = 0; i
& _arrBarcode.C i++)}