上传文件问题，请问如何能只上传前10个字节到一个数组！

[tavor]

上传文件问题，请问如何能只上传前10个字节到一个数组！

好像文件上传的时候不能只选几个字节上传是吧，可是整个上传的时侯，会提示有非法字符呢，我估计是文件内容的原因，不知道对不？

我用的方法如下，还是把整个文件作为一个文件输入流！
for(int i=0;i<20;i++)
{
this.dd.PostedFile.InputStream.Position=this.dd.PostedFile.InputStream.Position+1;
s[i]=(byte)this.dd .PostedFile .InputStream.ReadByte();
}
dd是 webservice对象
数组s为存放读取字节的数组

在另一个函数中
public string HelloWorld2(byte [] ss)
{
string s="";
try
{
for(int i=0;i<ss.Length;i++)
{
s=s+((char)ss[i]).ToString();
}
}
catch(Exception){return "there is a fault!";}
return s;
}

但是有时会出问题，就像我上面说的，还请高手指点一下

[saucer]

after ReadByte, the position is moved too, so you don't need to move the Position manuall, try

int n = File1.PostedFile.ContentLength;
if (n>10)
n = 10;

byte[] bs = new byte[n];
File1.PostedFile.InputStream.Read(bs,0,n);

[tavor]

yeah,I know your meaning.but i don't read bytes closely,i read one,then skip some bytes,read another byte.like this!
and as you said,before you use the HelloWorld2(byte [] ss),you still need to the whole input stream ,it means you still need to read the whole file! right?

but thank you all the same!