Solution of C # image amplification problem

Enlarge | solve | Problem recently, when I was writing tools, I found a very disgusting problem, when using drawimage to enlarge the image, the default amplification algorithm of C # is not Nearestneighbor algorithm, and Java Swing's DrawImage amplification algorithm defaults to the Nearestneighbor algorithm, the solution is: G.interpolationmode = System.Drawing.Drawing2D.InterpolationMo De.         Nearestneighbor; I thought this would solve the problem, the results of the enlarged image of the upper left half pixel less, that is, if the magnified image is 8 times times, then the magnification of the image is less than 4 pixels wide, do not know why C # to do so, it is said to be due to the floating point and the rounding of the problem caused by, if not Java convenient Ah, The solution is: g.pixeloffsetmode = System.Drawing.Drawing2D.PixelOffsetMode.Half;