将文件发送到回收站

Question

目前我正在使用以下功能

file.Delete();

但是如何使用此功能将文件发送到回收站而不是直接删除呢？

Answer 1

使用FileSystem.DeleteFile 并指定正确的RecycleOption。

虽然这适用于 UI 交互式应用程序，但它不适用于非 UI 交互式应用程序，如 Windows 服务应用程序。

Answer 2

注意：这也不适用于 Windows 服务等非 UI 交互应用程序

这个包装器可以提供你需要的功能：

using System.Runtime.InteropServices;

public class FileOperationAPIWrapper
    {
        /// <summary>
        /// Possible flags for the SHFileOperation method.
        /// </summary>
        [Flags]
        public enum FileOperationFlags : ushort
        {
            /// <summary>
            /// Do not show a dialog during the process
            /// </summary>
            FOF_SILENT = 0x0004,
            /// <summary>
            /// Do not ask the user to confirm selection
            /// </summary>
            FOF_NOCONFIRMATION = 0x0010,
            /// <summary>
            /// Delete the file to the recycle bin.  (Required flag to send a file to the bin
            /// </summary>
            FOF_ALLOWUNDO = 0x0040,
            /// <summary>
            /// Do not show the names of the files or folders that are being recycled.
            /// </summary>
            FOF_SIMPLEPROGRESS = 0x0100,
            /// <summary>
            /// Surpress errors, if any occur during the process.
            /// </summary>
            FOF_NOERRORUI = 0x0400,
            /// <summary>
            /// Warn if files are too big to fit in the recycle bin and will need
            /// to be deleted completely.
            /// </summary>
            FOF_WANTNUKEWARNING = 0x4000,
        }

        /// <summary>
        /// File Operation Function Type for SHFileOperation
        /// </summary>
        public enum FileOperationType : uint
        {
            /// <summary>
            /// Move the objects
            /// </summary>
            FO_MOVE = 0x0001,
            /// <summary>
            /// Copy the objects
            /// </summary>
            FO_COPY = 0x0002,
            /// <summary>
            /// Delete (or recycle) the objects
            /// </summary>
            FO_DELETE = 0x0003,
            /// <summary>
            /// Rename the object(s)
            /// </summary>
            FO_RENAME = 0x0004,
        }



        /// <summary>
        /// SHFILEOPSTRUCT for SHFileOperation from COM
        /// </summary>
        [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]
        private struct SHFILEOPSTRUCT
        {

            public IntPtr hwnd;
            [MarshalAs(UnmanagedType.U4)]
            public FileOperationType wFunc;
            public string pFrom;
            public string pTo;
            public FileOperationFlags fFlags;
            [MarshalAs(UnmanagedType.Bool)]
            public bool fAnyOperationsAborted;
            public IntPtr hNameMappings;
            public string lpszProgressTitle;
        }

        [DllImport("shell32.dll", CharSet = CharSet.Auto)]
        private static extern int SHFileOperation(ref SHFILEOPSTRUCT FileOp);

        /// <summary>
        /// Send file to recycle bin
        /// </summary>
        /// <param name="path">Location of directory or file to recycle</param>
        /// <param name="flags">FileOperationFlags to add in addition to FOF_ALLOWUNDO</param>
        public static bool Send(string path, FileOperationFlags flags)
        {
            try
            {
                var fs = new SHFILEOPSTRUCT
                                        {
                                            wFunc = FileOperationType.FO_DELETE,
                                            pFrom = path + '\0' + '\0',
                                            fFlags = FileOperationFlags.FOF_ALLOWUNDO | flags
                                        };
                SHFileOperation(ref fs);
                return true;
            }
            catch (Exception)
            {
                return false;
            }
        }

        /// <summary>
        /// Send file to recycle bin.  Display dialog, display warning if files are too big to fit (FOF_WANTNUKEWARNING)
        /// </summary>
        /// <param name="path">Location of directory or file to recycle</param>
        public static bool Send(string path)
        {
            return Send(path, FileOperationFlags.FOF_NOCONFIRMATION | FileOperationFlags.FOF_WANTNUKEWARNING);
        }

        /// <summary>
        /// Send file silently to recycle bin.  Surpress dialog, surpress errors, delete if too large.
        /// </summary>
        /// <param name="path">Location of directory or file to recycle</param>
        public static bool MoveToRecycleBin(string path)
        {
            return Send(path, FileOperationFlags.FOF_NOCONFIRMATION | FileOperationFlags.FOF_NOERRORUI | FileOperationFlags.FOF_SILENT);

        }

        private static bool deleteFile(string path, FileOperationFlags flags)
        {
            try
            {
                var fs = new SHFILEOPSTRUCT
                                        {
                                            wFunc = FileOperationType.FO_DELETE,
                                            pFrom = path + '\0' + '\0',
                                            fFlags = flags
                                        };
                SHFileOperation(ref fs);
                return true;
            }
            catch (Exception)
            {
                return false;
            }
        }

        public static bool DeleteCompletelySilent(string path)
        {
            return deleteFile(path,
                              FileOperationFlags.FOF_NOCONFIRMATION | FileOperationFlags.FOF_NOERRORUI |
                              FileOperationFlags.FOF_SILENT);
        }
    }

Answer 3

来自MSDN：

添加对 Microsoft.VisualBasic 程序集的引用。在这个库中可以找到所需的类。

将此 using 语句添加到文件顶部 using Microsoft.VisualBasic.FileIO;

使用FileSystem.DeleteFile删除文件，可以选择是否指定回收站。

使用FileSystem.DeleteDirectory 删除目录，并可选择指定是否将其发送到回收站。

Answer 4

以下解决方案比其他解决方案更简单：

using Shell32;

static class Program
{
    public static Shell shell = new Shell();
    public static Folder RecyclingBin = shell.NameSpace(10);

    static void Main()
    {
        RecyclingBin.MoveHere("PATH TO FILE/FOLDER")
    }
}

您可以使用此库使用回收站的其他功能。

首先，不要忘记添加库“Microsoft Shell Controls And Automation”（来自 COM 菜单），以便能够使用 Shell32 命名空间。它将动态链接到您的项目，而不是与您的程序一起编译。

Answer 5

不幸的是，您需要借助 Win32 API 将文件删除到回收站。尝试以下代码，基于this post。它利用通用SHFileOperation 函数通过Windows Shell 进行文件系统操作。

定义以下内容（在实用程序类中可能是最好的）。

[StructLayout(LayoutKind.Sequential, CharSet=CharSet.Auto, Pack=1)]
public struct SHFILEOPSTRUCT
{
        public IntPtr hwnd;
        [MarshalAs(UnmanagedType.U4)] public int wFunc;
        public string pFrom;
        public string pTo;
        public short fFlags;
        [MarshalAs(UnmanagedType.Bool)] public bool fAnyOperationsAborted;
        public IntPtr hNameMappings;
        public string lpszProgressTitle;
}

[DllImport("shell32.dll", CharSet=CharSet.Auto)]
public static extern int SHFileOperation(ref SHFILEOPSTRUCT FileOp);

public const int FO_DELETE = 3;
public const int FOF_ALLOWUNDO = 0x40;
public const int FOF_NOCONFIRMATION = 0x10; // Don't prompt the user

要使用它来删除文件，将其发送到回收站，您需要以下内容：

var shf = new SHFILEOPSTRUCT();
shf.wFunc = FO_DELETE;
shf.fFlags = FOF_ALLOWUNDO | FOF_NOCONFIRMATION;
shf.pFrom = @"C:\test.txt";
SHFileOperation(ref shf);

Answer 6

您可以通过 DllImport SHFileOperation 来执行此操作。

Answer 7

为此有内置库。

首先添加参考Microsoft.VisualBasic 然后添加此代码：

FileSystem.DeleteFile(path_of_the_file,
                        Microsoft.VisualBasic.FileIO.UIOption.AllDialogs,
                        Microsoft.VisualBasic.FileIO.RecycleOption.SendToRecycleBin,
                        Microsoft.VisualBasic.FileIO.UICancelOption.ThrowException);

我找到了这个here。

Answer 8

我使用这种扩展方法，然后我可以只使用 DirectoryInfo 或 FileInfo 并删除它。

public static class NativeMethods
{
    [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]
        struct SHFILEOPSTRUCT
    {
        public IntPtr hwnd;
        [MarshalAs(UnmanagedType.U4)]
        public int wFunc;
        public string pFrom;
        public string pTo;
        public short fFlags;
        [MarshalAs(UnmanagedType.Bool)]
        public bool fAnyOperationsAborted;
        public IntPtr hNameMappings;
        public string lpszProgressTitle;
    }
    private const int FO_DELETE = 0x0003;
    private const int FOF_ALLOWUNDO = 0x0040;           // Preserve undo information, if possible. 
    private const int FOF_NOCONFIRMATION = 0x0010;      // Show no confirmation dialog box to the user      


    [DllImport("shell32.dll", CharSet = CharSet.Auto)]
    static extern int SHFileOperation(ref SHFILEOPSTRUCT FileOp);

    static bool DeleteFileOrFolder(string path)
    {


        SHFILEOPSTRUCT fileop = new SHFILEOPSTRUCT();
        fileop.wFunc = FO_DELETE;
        fileop.pFrom = path + '\0' + '\0';            
        fileop.fFlags = FOF_ALLOWUNDO | FOF_NOCONFIRMATION;


        var rc= SHFileOperation(ref fileop);
        return rc==0;
    }

    public static bool ToRecycleBin(this DirectoryInfo dir)
    {
        dir?.Refresh();
        if(dir is null || !dir.Exists)
        {
            return false;
        }
        else
            return DeleteFileOrFolder(dir.FullName);
    }
    public static bool ToRecycleBin(this FileInfo file)
    {
        file?.Refresh();

        if(file is null ||!file.Exists)
        {
            return false;
        }
        return DeleteFileOrFolder(file.FullName);
    }
}

如何调用它的示例可能是这样的：

private void BtnDelete_Click(object sender, EventArgs e)
{
    if(MessageBox.Show("Are you sure you would like to delete this directory?", "Delete & Close", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.No)
        return;

    var dir= new DirectoryInfo(directoryName);
    dir.ToRecycleBin();

}