[C #] How to select a directory

The basic idea is to use the SHBrowseForFolder so as to have the following code:

Private Enum Browseflag
{
Bif_returnonlyfsdirs = 0x0001,//for finding a folder to start document searching
Bif_dontgobelowdomain = 0x0002,//For starting the Find Computer
Bif_statustext = 0x0004,
Bif_returnfsancestors = 0x0008,
Bif_editbox = 0x0010,
Bif_validate = 0x0020,//insist on valid result (or CANCEL)

Bif_browseforcomputer = 0x1000,//browsing for Computers.
Bif_browseforprinter = 0x2000,//browsing for Printers
bif_browseincludefiles= 0x4000//browsing for Everything
}

[StructLayout (LayoutKind.Sequential)]
private struct BROWSEINFO
{
Public IntPtr hWndOwner;
Public IntPtr pidlroot;
[MarshalAs (UNMANAGEDTYPE.LPTSTR)]
public string displayname;
[MarshalAs (UNMANAGEDTYPE.LPTSTR)]
public string title;
public int flags;
Public INTPTR callback;
public INTPTR lparam;
}

[DllImport ("Shell32.dll", CharSet=CharSet.Auto)]
static extern IntPtr SHBrowseForFolder (ref browseinfo info);
[DllImport ("Shell32.dll", CharSet=CharSet.Auto)]
[Return:marshalas (Unmanagedtype.bool)]
internal extern static bool SHGetPathFromIDList (IntPtr pidl, [MarshalAs (UNMANAGEDTYPE.LPTSTR)] System.Text.StringBuilder Pszpath);

public static string Browsefolder (IWin32Window owner)
{
Browseinfo info = new Browseinfo ();
Info.flags = (int) browseflag.bif_returnonlyfsdirs
+ (int) browseflag.bif_statustext
+ (int) browseflag.bif_validate;
Info.hwndowner = owner. Handle;
IntPtr pidlreturned = SHBrowseForFolder (ref info);

StringBuilder sb = new StringBuilder (260);
SHGetPathFromIDList (pidlreturned, SB);

Return SB. ToString ();
}


This is definitely the easiest way to solve the problem. Although no release of pidlreturned may result in a small amount of memory leak, but then a little memory, who cares?