how to create Bitmap from Array?

In Windows Forms (.NET), create a Bitmap and set its pixels from the array.

For an int[] of ARGB values (length = width * height):

int width = 48;
int height = 12;
int[] colors = new int[width * height];
// fill colors[y * width + x] with ARGB values

var bmp = new Bitmap(width, height, System.Drawing.Imaging.PixelFormat.Format32bppArgb);

for (int y = 0; y < height; y++)
{
    for (int x = 0; x < width; x++)
    {
        int argb = colors[y * width + x];
        bmp.SetPixel(x, y, Color.FromArgb(argb));
    }
}

For a Color[] (length = width * height):

int width = 48;
int height = 12;
Color[] colors = new Color[width * height];
// fill colors[y * width + x]

var bmp = new Bitmap(width, height);

for (int y = 0; y < height; y++)
{
    for (int x = 0; x < width; x++)
    {
        bmp.SetPixel(x, y, colors[y * width + x]);
    }
}

If performance is critical, use LockBits and copy the raw bytes instead of SetPixel, but the above is the simplest approach for a 48×12 image.

References:

• BitmapSource.Create Method
• Bitmap Creation
• Bitmap Storage