Unable to read black and white image

[code_explorer]

Dear Friends, I am using the following code to read colored (24 bit) image into array, but when I want to read black and white (1 bit image) it gives error "AccessViolationException unhandled" "Attempted to read or write protected memory. This is often an indication that other memory is corrupt.": public static bool identifyLine(Bitmap imtooperated) { ArrayList blah = new ArrayList(); BitmapData bmData = new BitmapData(); Rectangle rect = new Rectangle(0, 0, imtooperated.Width, imtooperated.Height); bmData = imtooperated.LockBits(rect, ImageLockMode.ReadOnly, imtooperated.PixelFormat); int stride = bmData.Stride; int range=0; unsafe { byte* p = (byte*)(void*)bmData.Scan0; for (int y = 0; y < imtooperated.Width; y++) { for (int x = 0; x < imtooperated.Height; x++) { blah.Add(p[range]); //here error comes range++; } p += 1; } p += stride; } imtooperated.UnlockBits(bmData); return true; } Please help.

[rizgar]

dear code_explore replace this line bmData = imtooperated.LockBits(rect, ImageLockMode.ReadOnly,imtooperated.PixelFormat); by bmData = imtooperated.LockBits(rect, ImageLockMode.ReadOnly,PixelFormat1bppIndexed,imtooperated.PixelFormat); you dont specify format for reading reqarding...

eng. rizgar