How Can I Create a Bitmap from a Byte Array in C#?

Creating Bitmap from Byte Array in C#

This question has been asked numerous times before, but here's a comprehensive answer for beginners:

You have a byte array imageData containing image data and dimensions specified by fWidth and fHeight. To convert this byte array into a bitmap image, follow these steps:

1. Create a MemoryStream: To work with the byte array as a data stream, create a MemoryStream using the System.IO namespace. Initialize it with the imageData array:

   using System.IO;
   
   Bitmap bmp;
   using (var ms = new MemoryStream(imageData))
   {
      // ...
   }

2. Instantiate a Bitmap: Use the Bitmap(Stream stream) constructor overload to create a Bitmap object from the MemoryStream. This will load the image data into the bitmap:

   bmp = new Bitmap(ms);

Now you have a Bitmap named bmp containing the image represented by the byte array. You can further manipulate or save this bitmap as needed.

Note:

Keep in mind that passing an empty or invalid stream (e.g., one containing non-image data) will lead to an ArgumentException being thrown. Ensure that the data in the byte array conforms to an image format recognized by the Bitmap class (such as JPEG or PNG).

The above is the detailed content of How Can I Create a Bitmap from a Byte Array in C#?. For more information, please follow other related articles on the PHP Chinese website!