我有这个类似乎在非 64 位上运行良好。
using System;
using System.Runtime.InteropServices;
namespace DeleteToRecycleBin
{
/// <summary>
/// Send files directly to the recycle bin.
/// </summary>
public class RecybleBin
{
/// <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, Pack = 1)]
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 readonly bool fAnyOperationsAborted;
public readonly IntPtr hNameMappings;
public readonly 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
{
SHFILEOPSTRUCT fs = new SHFILEOPSTRUCT
{
wFunc = FileOperationType.FO_DELETE,
pFrom = path + '\0' + '\0',
fFlags = FileOperationFlags.FOF_ALLOWUNDO | flags
};
// important to double-terminate the string.
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 SendSilent(string path)
{
return Send(path, FileOperationFlags.FOF_NOCONFIRMATION | FileOperationFlags.FOF_NOERRORUI | FileOperationFlags.FOF_SILENT);
}
}
}
有什么办法可以修复它,让它在 x64 上也能正常工作吗?我尝试将 ushort 更改为 ulong 和其他一些修改,但它不起作用。
我知道还有其他解决方案需要参考 Microsoft.VisualBasic,但我更喜欢 p/invoke 方式。
正确答案是:
在 x64 下,SHFILEOPSTRUCT 必须在没有 Pack = 1 参数的情况下声明,否则它将失败。如果您希望代码独立于平台,这真的很痛苦,因为您必须声明两个单独的结构,一个带有 Pack = 1,一个没有。然后,您必须声明两个不同的 SHFileOperation 调用,一个用于每个结构。然后你必须根据你是在 32 位还是 64 位上运行来决定调用哪一个。