binaray阅读器问题，二进制阅读器不读取字节。

本文介绍了binaray阅读器问题，二进制阅读器不读取字节。的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

此代码运行良好

会话[  fileUpl] = fileUpl; lblFileUpload.Text = fileUpl.FileName; 
会话[ 图像] = fileUpl.PostedFile; 
 Stream fs = fileUpl.PostedFile.InputStream; 
 BinaryReader br =  new  BinaryReader（fs）; 
  byte  [] bytes = br.ReadBytes（（ Int32 ）fs.Length）; 
  string  base64String = Convert.ToBase64String（bytes， 0 ，bytes.Length）; 
 Image1.ImageUrl =   data：image / png; base64， + base64String;

但是下面这段代码不起作用，fs.length显示文件长度但是bites数组显示0字节。这意味着二进制阅读器不开心有什么。我不知道为什么请帮忙。

 fileUpl =（FileUpload）Session [  fileUpl]; lblFileUpload.Text = fileUpl.FileName; 
 HttpPostedFile postedFile =（HttpPostedFile）Session [  Image]; 
 Stream fs = postingFile.InputStream; 
 BinaryReader br =  new  BinaryReader（fs）; 
  byte  [] bytes = br.ReadBytes（（ Int32 ）fs.Length）; 
  string  base64String = Convert.ToBase64String（bytes， 0 ，bytes.Length）; 
 Image1.ImageUrl =   data：image / png; base64， + base64String;

解决方案

This code works perfectly well

Session["fileUpl"] = fileUpl; lblFileUpload.Text = fileUpl.FileName;
            Session["Image"] = fileUpl.PostedFile;
            Stream fs = fileUpl.PostedFile.InputStream;
            BinaryReader br = new BinaryReader(fs);
            byte[] bytes = br.ReadBytes((Int32)fs.Length);
            string base64String = Convert.ToBase64String(bytes, 0, bytes.Length);
            Image1.ImageUrl =  + base64String;

but this code below does not works ,fs.length shows file lenght but bites array shows 0 bytes .that means binary reader is not happy with something .i dont know why please help.

fileUpl = (FileUpload)Session["fileUpl"]; lblFileUpload.Text = fileUpl.FileName;
           HttpPostedFile postedFile = (HttpPostedFile)Session["Image"];
           Stream fs = postedFile.InputStream;
           BinaryReader br = new BinaryReader(fs);
           byte[] bytes = br.ReadBytes((Int32)fs.Length);
           string base64String = Convert.ToBase64String(bytes, 0, bytes.Length);
           Image1.ImageUrl =  + base64String;

解决方案

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