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,而不是直接将其删除?
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,而不是直接将其删除?
.NET Matters: IFileOperation in Windows Vista
并且位于Columns
文件夹中。
FOFX_RECYCLEONDELETE = 0x00080000
操作标志,并且该标志仅在Windows 8或更高版本上受支持。
Answers:
注意:这也不适用于非UI Interactive应用程序(例如Windows Services)
该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);
}
}
使用FileSystem.DeleteFile并指定正确的RecycleOption。
尽管这将与UI Interactive Apps一起使用,但不适用于Windows Service应用程序等非UI交互式应用程序。
Microsoft.VisualBasic.FileIO.FileSystem
,与使用此处发布的示例基本相同SHFileOperation
。
IL
这样,所以我不介意。VB程序集调用相同的WinAPI函数btw。
Microsoft.VisualBasic.Compatibility
偶然把大会弄错了?我会避免的那个。似乎它不会很快被弃用(它已在RDL报告引擎中使用,等等)。
从MSDN:
添加对Microsoft.VisualBasic程序集的引用。所需的类在此库中找到。
将此using语句添加到文件的顶部using Microsoft.VisualBasic.FileIO
;
使用FileSystem.DeleteFile
删除一个文件,它指定回收站与否的选项。
使用FileSystem.DeleteDirectory
删除目录的选项来指定其发送到回收站与否。
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控件和自动化”(从COM菜单),以便能够使用Shell32
命名空间。它会动态链接到您的项目,而不是与您的程序一起编译。
10
为Shell32.ShellSpecialFolderConstants.ssfBITBUCKET
。值得提及的第二个参数是MoveHere
关于64之类的选项(“如果可能,保留撤消信息”)。从MSDN链接一些文档源将是一个不错的结局。
不幸的是,您需要诉诸Win32 API才能将文件删除到回收站中。根据这篇文章尝试以下代码。它利用通用SHFileOperation
功能通过Windows Shell对文件系统进行操作。
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
并使用它删除文件并将其发送到回收站,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);
shf.pFrom = @"C:\test.txt";
是错误的-pFrom必须以double null终止。您应该添加\0
文件shf.pFrom = "C:\\text.txt\0";
。请参阅docs.microsoft.com/zh-CN/windows/desktop/api/shellapi/…–
我使用这种扩展方法,然后可以使用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();
}