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FileStream fr;
FileStream fw;
int readBit=0;
byte[] data = new byte[1024];
fr.Seek(1024, SeekOrigin.Begin);//加上这句,从1025个开始
while((readBit=fs.Read(data,0,data.Length))>0)//建议用while
{
fw.Write(data,0,readBit);
}
//关闭fs,fr