『壹』 C# FileStream读写文件（.txt）时候用excel操作此文件，写入数据线程会被终止
private void WriteIntoFile(object obj,string filename)
{
lock (o)
{
using (FileStream fs = new FileStream(filename, FileMode.Append, FileAccess.Write))
{
byte[] bytData = rawSerialize(obj);
fs.Write(bytData, 0, bytData.Length);
fs.Close();
}
}
}
第一，尝试下释放fs？
第二，尝试下运行共版享写权？using (FileStream fs = new FileStream(filename, FileMode.Append, FileAccess.Write,FileShare.Write))?
『贰』 C#FileStream循环读取大文件有什么好处
虽然是在 while 循环内实现读写，但不能说是循环读取(循环读取说的是读到尾后有从头读），而是分段读取
分段读取可以减少缓存空间的内存开销，合适的缓存空间可提高硬盘的寻道效率
『叁』 FileStream怎样获得文件相对路径
string strAppPath = Application.StartupPath; //获得可来执行文件的自路径。
string strConfigPath = strAppPath + "\\Config\\DBConfig.ini"; //自己调整一下相对路径。
『肆』 C#用FileStream类文件读出指定txt文件内容时，怎么前面多了“”从哪儿来的
应该是编码问题, 请以默认编码格式读取文本内容
『伍』 C#，怎样利用filestream流查询文件中的某几个字
private string SelectStr(string str)
{
FileStream fs = new FileStream("d:\\a.txt", FileMode.Open);
StreamReader m_streamReader = new StreamReader(fs, System.Text.Encoding.GetEncoding("GB2312"));
m_streamReader.BaseStream.Seek(0, SeekOrigin.Begin);
string strLine = m_streamReader.ReadLine();
do
{
if (strLine.Contains(str))
{
return strLine.Substring(strLine.IndexOf(str) - 4, 4);
}
strLine = m_streamReader.ReadLine();
} while (strLine != null && strLine != "");
m_streamReader.Close();
m_streamReader.Dispose();
fs.Close();
fs.Dispose();
return "";
}
}
『陆』 C# 用filestream读取文本的问题
刚好前天写了一个类,送你了.
public enum ArchiveMode
{
store,
load,
}
public static string BytesToString(byte[] bs, int start, int bsLen)
{
string ss = Encoding.Unicode.GetString(bs, start, bsLen);
return ss;
}
public static void StringToBytes(string text, byte[] bs, out int bsLen)
{
bsLen = Encoding.Unicode.GetBytes(text, 0, text.Length, bs, 0);
}
public class Archive
{
FileStream m_fs = null;
ArchiveMode m_Mode;
public Archive(FileStream fs, ArchiveMode mode)
{
m_Mode = mode;
m_fs = fs;
}
public void Close()
{
m_fs = null;
}
public bool IsStore
{
get { return m_Mode == ArchiveMode.store; }
}
public bool IsLoad
{
get { return m_Mode == ArchiveMode.load; }
}
public DateTime ReadDataTime()
{
if (IsStore)
throw new Exception("store模式下不允许读取");
byte[] bs8 = new byte[8];
m_fs.Read(bs8, 0, 8);
long l = System.BitConverter.ToInt64(bs8, 0);
DateTime dt = new DateTime(l);
return dt;
}
public void WriteDataTime(DateTime dt)
{
if (IsLoad)
throw new Exception("load模式下不允许写入");
byte[] bs = System.BitConverter.GetBytes(dt.ToBinary());
m_fs.Write(bs, 0, 8);
}
public int ReadCount()
{
if (IsStore)
throw new Exception("store模式下不允许读取");
byte[] bs = new byte[4];
m_fs.Read(bs, 0, 4);
return System.BitConverter.ToInt32(bs, 0);
}
public void WriteCount(int n)
{
if (IsLoad)
throw new Exception("load模式下不允许写入");
byte[] bs = System.BitConverter.GetBytes(n);
//if (n > 0xFFFF)
//{
// m_fs.Write(System.BitConverter.GetBytes(0xFFFF), 0, 2);
//}
m_fs.Write(bs, 0, bs.Length);
}
public long ReadLong()
{
if (IsStore)
throw new Exception("store模式下不允许读取");
byte[] bs = new byte[8];
m_fs.Read(bs, 0, 8);
return System.BitConverter.ToInt64(bs, 0);
}
public void WriteLong(long n)
{
if (IsLoad)
throw new Exception("load模式下不允许写入");
byte[] bs = System.BitConverter.GetBytes(n);
m_fs.Write(bs, 0, bs.Length);
}
public int Read(byte[] bs, int count)
{
if (IsStore)
throw new Exception("store模式下不允许读取");
return m_fs.Read(bs, 0, count);
}
public void Write(byte[] bs, int count)
{
if (IsLoad)
throw new Exception("load模式下不允许写入");
m_fs.Write(bs, 0, count);
}
public void WriteString(string text)
{
int len = text.Length * 2;
byte[] bs = new byte[len + 8];
int oulen = 0;
F.StringToBytes(text, bs, out oulen);
WriteCount(oulen);
Write(bs, oulen);
}
public string ReadString()
{
int len = ReadCount();
byte[] bs = new byte[len];
Read(bs, len);
return F.BytesToString(bs, 0, len);
}
}
『柒』 asp.net filestream 如何读取pdf文件，这个该怎么做
<%@ Page Language="C#"%>
<%@ Import Namespace="System" %>
<%@ Import Namespace="System.IO" %>
<%
Response.Clear();
string path = @"F:\TDDOWNLOAD\Book\C#游戏编程入门.pdf";
Response.ContentType = "application/pdf";
Response.AddHeader("content-disponstion", "filename=C#游戏编程入门.pdf");
byte[] buffer = new byte[256];
FileStream fs = File.Open(path, FileMode.Open);
Response.AddHeader("content-length", fs.Length.ToString());
int length = (int)fs.Length;
if (Response.IsClientConnected)
{
while (length > -1)
{
length = length - buffer.Length;
fs.Read(buffer, 0, buffer.Length);
Response.OutputStream.Write(buffer, 0, buffer.Length);
}
}
fs.Close();
Response.End();
%>
是哦 这个就是显示到网页上的。
『捌』 C#怎么用FileStream一行一行的读取文本
FileStream fs = New FileStream (文件路来径, FileMode.Open);
StreamReader streamReader = new StreamReader(fileStream);
string line = "";
while ((line = streamReader.ReadLine()) !源= null)
{
//line就是一行一行的文本
。。。
}