static void Main(string[] args)
{
string source = @"D:\桌面\demo.txt";
string target = @"D:\桌面\demo2.txt";
CopyFile(source, target);
}
public static void CopyFile(string source, string target)
{
using (FileStream fsRead = new FileStream(source, FileMode.Open, FileAccess.Read))
{
using (FileStream fsWrite = new FileStream(target, FileMode.OpenOrCreate, FileAccess.Write))
{
byte[] buffer = new byte[1024 * 1024 * 5];
while (true)
{
int r = fsRead.Read(buffer, 0, buffer.Length);
if (r == 0)
{
break;
}
fsWrite.Write(buffer, 0, r);
}
}
}
}
或者更加简便的操作
static void Main(string[] args)
{
string source = @"D:\桌面\demo.txt";
string target = @"D:\桌面\demo2.txt";
CopyFile(source, target);
}
public static void CopyFile(string source, string target)
{
using (FileStream fsRead = new FileStream(source, FileMode.Open, FileAccess.Read))
{
using (FileStream fsWrite = new FileStream(target, FileMode.OpenOrCreate, FileAccess.Write))
{
//byte[] buffer = new byte[1024 * 1024 * 5];
//while (true)
//{
// int r = fsRead.Read(buffer, 0, buffer.Length);
// if (r == 0)
// {
// break;
// }
// fsWrite.Write(buffer, 0, r);
//}
fsRead.CopyTo(fsWrite);
}
}
}
标签：功能,string,FileStream,source,复制,buffer,new,target From： https://www.cnblogs.com/zerryLuo/p/16716419.html