把文件移入回收站

使用过了，很好用！ 

 1using System;
 2using System.Data;
 3using System.Configuration;
 4using System.Linq;
 5using System.Web;
 6using System.Web.Security;
 7using System.Web.UI;
 8using System.Web.UI.HtmlControls;
 9using System.Web.UI.WebControls;
10using System.Web.UI.WebControls.WebParts;
11using System.Xml.Linq;
12using System.Runtime.InteropServices;
13/**//// <summary>
14///DeleteFileClass 的摘要说明
15/// </summary>
16public class DeleteFileClass
17{
18    private const int FO_DELETE = 0x3;
19    private const ushort FOF_NOCONFIRMATION = 0x10;
20    private const ushort FOF_ALLOWUNDO = 0x40;
21    [DllImport("shell32.dll", SetLastError = true, CharSet = CharSet.Unicode)]
22    private static extern int SHFileOperation([In, Out] _SHFILEOPSTRUCT str);
23    [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
24    public class _SHFILEOPSTRUCT
25    {
26        public IntPtr hwnd;
27        public UInt32 wFunc;
28        public string pFrom;
29        public string pTo;
30        public UInt16 fFlags;
31        public Int32 fAnyOperationsAborted;
32        public IntPtr hNameMappings;
33        public string lpszProgressTitle;
34    }
35    public static int Delete(string path)
36    {
37        _SHFILEOPSTRUCT pm = new _SHFILEOPSTRUCT();
38        pm.wFunc = FO_DELETE;
39        pm.pFrom = path + '\0';
40        pm.pTo = null;
41        pm.fFlags = FOF_ALLOWUNDO | FOF_NOCONFIRMATION;
42        return SHFileOperation(pm);
43    }
44}