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它？
答案 0 :(得分：140)
使用FileSystem.DeleteFile并指定正确的RecycleOption。
虽然这适用于UI Interactive Apps，但它不适用于非UI交互式应用，例如Windows服务应用。
答案 1 :(得分：48)
注意：这也不适用于非UI交互式应用程序，如Windows服务
此包装器可以为您提供所需的功能：
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);
}
}
答案 2 :(得分：37)
来自MSDN：
添加对Microsoft.VisualBasic程序集的引用。所需的类可以在这个库中找到。
将此using语句添加到文件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，并选择指定是否将其发送到回收站。
答案 3 :(得分：13)
不幸的是，您需要使用Win32 API将文件删除到回收站。请尝试以下代码，基于this post。它通过Windows Shell对文件系统操作使用通用SHFileOperation函数。
定义以下内容（在实用程序类中最好）。
[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);
答案 4 :(得分：1)
您可以DllImport SHFileOperation执行此操作。
答案 5 :(得分：1)
答案 6 :(得分：0)
我使用这种扩展方法，那么我可以只使用DirectoryInfo或FileInfo并将其删除。
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：
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();
}