converting a base 64 string to an image and saving it

Question

Here is my code   protected void SaveMyImage Click object sender  EventArgs e                        string imageUrl   Hidden1 Value              string saveLocation   Server MapPath    PictureUploads whatever2 png                    HttpWebRequest imageRequest    HttpWebRequest WebRequest Create imageUrl               WebResponse imageResponse   imageRequest GetResponse                 Stream responseStream   imageResponse GetResponseStream                 using  BinaryReader br   new BinaryReader responseStream                                 imageBytes   br ReadBytes 500000                   br Close                              responseStream Close                imageResponse Close                 FileStream fs   new FileStream saveLocation  FileMode Create               BinaryWriter bw   new BinaryWriter fs               try                               bw Write imageBytes                             finally                               fs Close                    bw Close                                The top imageUrl declartion is taking in a Base64 image string  and I want to convert it into an image   I think my set of code only works for images like  www mysite com test jpg  not for a Base64 string   Anybody have some suggestions   Thanks

User · Answer

In my case it works only with two line of code. Test the below C# code:

String dirPath = "C:\myfolder\";
String imgName = "my_mage_name.bmp";

byte[] imgByteArray = Convert.FromBase64String("your_base64_string");
File.WriteAllBytes(dirPath + imgName, imgByteArray);

That's it. Kindly up vote if you really find this solution works for you. Thanks in advance.

User · Answer

In a similar scenario what worked for me was the following   byte   bytes   Convert FromBase64String Base64String       ImageTagId ImageUrl    data image jpeg base64     Convert ToBase64String bytes     ImageTagId is the ID of the ASP image tag

User · Answer

Here is what I ended up going with       private void SaveByteArrayAsImage string fullOutputPath  string base64String                byte   bytes   Convert FromBase64String base64String            Image image          using  MemoryStream ms   new MemoryStream bytes                         image   Image FromStream ms                      image Save fullOutputPath  System Drawing Imaging ImageFormat Png

User · Answer

public bool SaveBase64 string Dir  string FileName  string FileType  string Base64ImageString        try               string folder   System Web HttpContext Current Server MapPath  quot    quot     Dir          if   Directory Exists folder                         Directory CreateDirectory folder                      string filePath   folder    quot   quot    FileName    quot   quot    FileType          File WriteAllBytes filePath  Convert FromBase64String Base64ImageString            return true            catch               return false

User · Answer

If you have a string of binary data which is Base64 encoded  you should be able to do the following   byte   encodedDataAsBytes   System Convert FromBase64String encodedData     You should be able to write the resulting array to a file

User · Answer

I would suggest via Bitmap    public void SaveImage string base64        using  MemoryStream ms   new MemoryStream Convert FromBase64String base64                  using  Bitmap bm2   new Bitmap ms                         bm2 Save  SavingPath     ImageName jpg

User · Answer

Here is working code for converting an image from a base64 string to an Image object and storing it in a folder with unique file name   public void SaveImage         string strm    R0lGODlhAQABAIAAAAAAAP   yH5BAEAAAAALAAAAAABAAEAAAIBRAA7           this is a simple white background image     var myfilename  string Format    0    Guid NewGuid            Generate unique filename     string filepath     UserImages     myfilename    jpeg       var bytess   Convert FromBase64String strm       using  var imageFile   new FileStream filepath  FileMode Create                 imageFile Write bytess  0  bytess Length           imageFile Flush

User · Answer

Here is an example  you can modify the method to accept a string parameter   Then just save the image object with image Save        public Image LoadImage           data image gif base64        this image is a single pixel  black      byte   bytes   Convert FromBase64String  R0lGODlhAQABAIAAAAAAAAAAACH5BAAAAAAALAAAAAABAAEAAAICTAEAOw           Image image      using  MemoryStream ms   new MemoryStream bytes                 image   Image FromStream ms              return image      It is possible to get an exception A generic error occurred in GDI   when the bytes represent a bitmap   If this is happening save the image before disposing the memory stream  while still inside the using statement

User · Answer

You can save Base64 directly into file   string filePath    MyImage jpg   File WriteAllBytes filePath  Convert FromBase64String base64imageString

[c#] converting a base 64 string to an image and saving it

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