文件操作,提示：因为该文件正由另一进程使用。

Question

string path =Server.MapPath("exercise.txt");
FileStream fs;
if( !File.Exists(path))
{
fs= new FileStream(path ,FileMode.Create,FileAccess.Write,FileShare.None);
}StreamWriter sw = new StreamWriter(path,false,Encoding.Default);
sw.Flush();
sw.Close();
fs=null;

Answer 1

FileStream fs = null;
try
{
fs = new FileStream(fullFileName,FileMode.Create,FileAccess.Write);
StreamWriter sw = new StreamWriter(fs,Encoding.Default);
sw.Write(fileContent);
sw.Close();
}
finally
{
if(fs != null)
fs.Close();
}

Answer 2

FileStream FS=new FileStream (@"C:\d.txt", FileMode.OpenOrCreate, FileAccess.Write);
using (StreamWriter sw = new StreamWriter(FS)) 
{
sw.Write("This is the ");
}

Answer 3

string path = Server.MapPath("exercise.txt");
Response.Write(path+"<br>");
if( !File.Exists(path))
{
File.Create(path);

}
StreamWriter sw = File.OpenWrite();  //注意此行.
sw.Write("yes");
sw.Close();

Answer 4

在finally里面写：
{
if(fs != null)
fs.Close();
}