1: using System;

   2: using System.Collections.Generic;

   3: using System.Drawing;

   4: using System.Drawing.Imaging;

   5: using System.IO;

   6: using System.Linq;

   7: using System.Text;

   8:  

   9: namespace GifToPng

  10: {

  11:     class Program

  12:     {

  13:         static void Main(string[] args)

  14:         {

  15:             foreach (var path in args)

  16:             {

  17:                 Image gif = Image.FromFile(path);

  18:                 Graphics graphic = null;

  19:                 var frame = new FrameDimension(gif.FrameDimensionsList[0]);

  20:                 int count = gif.GetFrameCount(frame);

  21:                 var image = new Bitmap(gif.Width*count, gif.Height);

  22:                 for (int i = 0; i < count; i++)

  23:                 {

  24:                     gif.SelectActiveFrame(frame, i);

  25:                     using (var stream = new MemoryStream())

  26:                     {

  27:                         gif.Save(stream, ImageFormat.Png);

  28:                         if (graphic == null)

  29:                         {

  30:                             graphic = Graphics.FromImage(image);

  31:                         }

  32:                         graphic.DrawImage(new Bitmap(stream), i*gif.Width, 0);

  33:                     }

  34:                 }

  35:                 var splitStr = path.Split('.');

  36:                 splitStr[splitStr.Length - 1] = "png";

  37:                 var newPath = string.Join(".", splitStr);

  38:                 image.Save(newPath);

  39:                 Console.WriteLine("convert success: {0}",newPath);

  40:             }

  41:             Console.ReadKey();

  42:         }

  43:     }

  44: }

  45: