C# Image Resizer

 1 using System;
 2 using System.Windows.Forms;
 3 using System.Drawing;
 4 using System.IO;
 5 class haha
 6 { 
 7     [STAThread]
 8     static void Main()
 9     {
10         string[] s=null;
11         OpenFileDialog dlg = new OpenFileDialog();
12         dlg.Filter = "|*.jpg";
13         dlg.Multiselect = true;
14         if (dlg.ShowDialog() == DialogResult.OK)
15         {
16             s = dlg.FileNames;
17         }
18         else return;
19         Bitmap bit = new Bitmap(321, 241);
20         for (int i = 0; i < s.Length; i++)
21         {
22             Graphics.FromImage(bit).DrawImage(Image.FromFile(s[i]),0,0,320,240);
23             bit.Save(i + ".png");
24         }
25         MessageBox.Show("转换成功了");
26     }
27 }