来自base64字符串的图像，它是Application / Octet-stream的类型 [英] Image from base64 string which is type of Application/Octet-stream

问题描述

我有一个base64字符串，如下所示。我猜它的类型是Application / Octet-stream。

我使用下面的代码将其转换为图像。但它给了我错误Paramter无效！。

I have a base64 string which is provided below. I guess its type is Application/Octet-stream.
I am using code below to convert it to an image. But it gives me error "Paramter is not valid!".

string base64string = "AAAAAQEAAAEcEgABHxIA ... xYAAF4WQABcFwAAQ==";

using (MemoryStream ms = new MemoryStream(Convert.FromBase64String(base64string)))
{
    pictureEdit1.Image = Image.FromStream(ms, true);
}

你可以从这里得到完整的字符串：http://orion.mn/updateapp/base64_unicode_string.rar [ ^ ]！



请帮助我如何将其转换为图像？

You can get full string from here: http://orion.mn/updateapp/base64_unicode_string.rar[^]!

Please, help me how to convert it to an image?

推荐答案

我认为你的64字符串不正确。你是如何将它转换为64的？

您可以像这样验证Base 64字符串：

Hi,

I think your base 64 string is incorrect. How did you convert it to base 64 ?
You can validate your Base 64 string like this:

public bool IsBase64String(string s)
{
  s = s.Trim();
  return (s.Length % 4 == 0) && Regex.IsMatch(s, @"^[a-zA-Z0-9\+/]*={0,3}

，RegexOptions.None）;

}

", RegexOptions.None); }

然后你可以这样称呼：

Then you can call it like this:

 public void LoadImage()
{
  string string64 = "R0lGODlhAQABAIAAAAAAAAAAACH5BAAAAAAALAAAAAABAAEAAAICTAEAOw==";
  bool isStringValid = this.IsBase64String(string64);
  if (isStringValid)
  {
     byte[] bytes = Convert.FromBase64String(string64);
     System.Drawing.Image image;
     using (MemoryStream ms = new MemoryStream(bytes))
     {
        image = System.Drawing.Image.FromStream(ms);
        //image.Save(ms, System.Drawing.Imaging.ImageFormat.Png);
     }                
   }            
}

这篇关于来自base64字符串的图像，它是Application / Octet-stream的类型的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！