try {
                FileStream fs = new FileStream(sFileAllName, FileMode.OpenOrCreate,FileAccess.Write);
                BinaryReader br = new BinaryReader(fs);
                byData = br.ReadBytes((int)fs.Length);
                fs.Close();
               }

执行

FileStream fs = new FileStream(sFileAllName, FileMode.OpenOrCreate,FileAccess.Write);

包流不可读的错误，

解决办法：去掉<span style="font-family: Arial, Helvetica, sans-serif;">FileAccess.Write问题解决</span>

<pre name="code" class="csharp">FileStream fs = new FileStream(sFileAllName, FileMode.OpenOrCreate);

C# 流不可读 解决办法