2019-8-31-dotnet-将文件删除到回收站

title	author	date	CreateTime	categories
dotnet 将文件删除到回收站	lindexi	2019-08-31 16:55:58 +0800	2019-03-22 08:56:42 +0800	dotnet

默认删除文件的时候 File.Delete 是将文件永久删除，如果是一些文档，建议删除到回收站，这样用户可以自己还原
通过 SHFileOperation 可以将文件放在回收站

本文提供的方法暂时只能在 x86 程序使用，此方法暂时不适合 dotnet core 程序

添加一个帮助类

    public static class RecycleBin

    {

        public static void DeleteToRecycleBin(string file)

        {

            var shf = new SHFILEOPSTRUCT

            {

                wFunc = FO_DELETE,

                fFlags = FOF_ALLOWUNDO | FOF_NOCONFIRMATION,

                // pFrom 需要在字符串后面加两个 \0 才可以 https://docs.microsoft.com/en-us/windows/desktop/api/shellapi/ns-shellapi-_shfileopstructa

                pFrom = file + "\0"

            };

            SHFileOperation(ref shf);

        }

        [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto, Pack = 1)]

        private struct SHFILEOPSTRUCT

        {

            public int hwnd;

            [MarshalAs(UnmanagedType.U4)] public int wFunc;

            public string pFrom;

            public string pTo;

            public short fFlags;

            [MarshalAs(UnmanagedType.Bool)] public bool fAnyOperationsAborted;

            public int hNameMappings;

            public string lpszProgressTitle;

        }

        [DllImport("shell32.dll", CharSet = CharSet.Auto)]

        private static extern int SHFileOperation(ref SHFILEOPSTRUCT FileOp);

        private const int FO_DELETE = 3;

        private const int FOF_ALLOWUNDO = 0x40;

        private const int FOF_NOCONFIRMATION = 0x10;

    }

这个类里面只有一个公开方法，要求传入一个文件

下面添加一些测试的代码

        static void Main(string[] args)

        {

            var folder = @"D:\lindexi\github\";

            var file = Path.Combine(folder, "欢迎访问我博客 blog.lindexi.com 里面有大量 UWP WPF 博客.txt");

            Directory.CreateDirectory(folder);

            if (!File.Exists(file))

            {

                File.WriteAllText(file, "欢迎访问我博客 blog.lindexi.com 里面有大量 UWP WPF 博客");

            }

            RecycleBin.DeleteToRecycleBin(file);

        }

尝试运行代码

如果可以引用Microsoft.VisualBasic那么写起来就很清真

Microsoft.VisualBasic.FileIO.FileSystem.DeleteDirectory(filename or folder,

      Microsoft.VisualBasic.FileIO.UIOption.OnlyErrorDialogs,

        Microsoft.VisualBasic.FileIO.RecycleOption.SendToRecycleBin);

代码在github

c# - Send a File to the Recycle Bin - Stack Overflow

Delete files or folders to recycle bin in C#

巴特西

2019-8-31-dotnet-将文件删除到回收站

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