Resize bitmap like in MS Paint

Question

I need to resize a bmp like the resize works in MS Paint - that is with no antialiasing . Anyone know how to do this in c# or vb.net ?

Answer 1

You can set the graphics interpolation mode to nearest neighbor and then use drawimage to resize it without anti-aliasing. (pardon my vb :-) )

Dim img As Image = Image.FromFile("c:\jpg\1.jpg")
Dim g As Graphics

pic1.Image = New Bitmap(180, 180, System.Drawing.Imaging.PixelFormat.Format32bppArgb)
g = Graphics.FromImage(pic1.Image)
g.InterpolationMode = Drawing2D.InterpolationMode.NearestNeighbor
g.DrawImage(img, 0, 0, pic1.Image.Width, pic1.Image.Height)