How to create bitmap from byte array

Question

I searched all question about byte array but i always failed  I have never coded c  i am new in this side  Could you help me how to make image file from byte array    Here is my function which stores byte in array named imageData  public void imageReady  byte   imageData  int fWidth  int fHeight

User · Answer

In addition  you can simply convert byte array to Bitmap  var bmp   new Bitmap new MemoryStream imgByte     You can also get Bitmap from file Path directly  Bitmap bmp   new Bitmap Image FromFile filePath

User · Answer

You ll need to get those bytes into a MemoryStream   Bitmap bmp  using  var ms   new MemoryStream imageData         bmp   new Bitmap ms       That uses the Bitmap Stream stream  constructor overload   UPDATE  keep in mind that according to the documentation  and the source code I ve been reading through  an ArgumentException will be thrown on these conditions   stream does not contain image data or is null  -or- stream contains a PNG image file with a single dimension greater than 65 535 pixels

User · Answer

Guys thank you for your help  I think all of this answers works  However i think my byte array contains raw bytes  That s why all of those solutions didnt work for my code    However i found a solution  Maybe this solution helps other coders who have problem like mine   static byte   PadLines byte   bytes  int rows  int columns       int currentStride   columns     3    int newStride   columns      4    byte   newBytes   new byte newStride   rows      for  int i   0  i  lt  rows  i           Buffer BlockCopy bytes  currentStride   i  newBytes  newStride   i  currentStride      return newBytes       int columns   imageWidth   int rows   imageHeight   int stride   columns   byte   newbytes   PadLines imageData  rows  columns     Bitmap im   new Bitmap columns  rows  stride             PixelFormat Format8bppIndexed             Marshal UnsafeAddrOfPinnedArrayElement newbytes  0      im Save  C   Users  musa  Documents  Hobby  image21 bmp      This solutions works for 8bit 256 bpp  Format8bppIndexed   If your image has another format you should change PixelFormat    And there is a problem with colors right now  As soon as i solved this one i will edit my answer for other users    PS   I am not sure about stride value but for 8bit it should be equal to columns   And also this function Works for me   This function copies 8 bit greyscale image into a 32bit layout   public void SaveBitmap string fileName  int width  int height  byte   imageData                         byte   data   new byte width   height   4                int o   0               for  int i   0  i  lt  width   height  i                                  byte value   imageData i                     data o      value                  data o      value                  data o      value                  data o      0                              unsafe                               fixed  byte  ptr   data                                         using  Bitmap image   new Bitmap width  height  width   4                                  PixelFormat Format32bppRgb  new IntPtr ptr                                                   image Save Path ChangeExtension fileName    jpg

User · Answer

Can be as easy as   var ms   new MemoryStream imageData   System Drawing Image image   Image FromStream ms    image Save  c   image jpg        Testing it out   byte   imageData      Create the byte array  var originalImage   Image FromFile   C  original jpg    using  var ms   new MemoryStream          originalImage Save ms  ImageFormat Jpeg       imageData   ms ToArray          Convert back to image  using  var ms   new MemoryStream imageData         Image image   Image FromStream ms       image Save   C  newImage jpg

[c#] How to create bitmap from byte array?

Examples related to c#

Examples related to image

Examples related to bitmap

Examples related to bytearray