How do I detect if a drive has a recycle bin in C#?

Use FOF_WANTNUKEWARNING.

Send a warning if a file is being permanently destroyed during a delete operation rather than recycled. This flag partially overrides FOF_NOCONFIRMATION.

I found a function called SHQueryRecycleBin when I looked at the functions exported by shell32.dll.

If the drive specified in pszRootPath has a recycle bin the function returns 0 otherwise it returns -2147467259.

I'm going to use this function via PInvoke.

I used the P/Invoke Interop Assistant to create the PInvoke code.

Here is the code of my function DriveHasRecycleBin:

[System.Runtime.InteropServices.StructLayoutAttribute(System.Runtime.InteropServices.LayoutKind.Sequential)]    private struct SHQUERYRBINFO    {        /// DWORD->unsigned int        public uint cbSize;        /// __int64        public long i64Size;        /// __int64        public long i64NumItems;    }    /// Return Type: HRESULT->LONG->int    ///pszRootPath: LPCTSTR->LPCWSTR->WCHAR*    ///pSHQueryRBInfo: LPSHQUERYRBINFO->_SHQUERYRBINFO*    [System.Runtime.InteropServices.DllImportAttribute("shell32.dll", EntryPoint = "SHQueryRecycleBinW")]    private static extern int SHQueryRecycleBinW([System.Runtime.InteropServices.InAttribute()] [System.Runtime.InteropServices.MarshalAsAttribute(System.Runtime.InteropServices.UnmanagedType.LPTStr)] string pszRootPath, ref SHQUERYRBINFO pSHQueryRBInfo);    public bool DriveHasRecycleBin(string Drive)    {        SHQUERYRBINFO Info = new SHQUERYRBINFO();        Info.cbSize = 20; //sizeof(SHQUERYRBINFO)        return SHQueryRecycleBinW(Drive, ref Info) == 0;    }