Or this:
using System;
using System.Reflection;
using System.Windows.Forms;
class OpenFolderDialog
{
//public bool AddExtension { get; set; }
public bool AutoUpgradeEnabled { get; set; }
//public bool CheckFileExists { get; set; }
public bool CheckPathExists { get; set; }
//public bool DereferenceLinks { get; set; }
public string Title { get; set; }
//public string DefaultExt { get; set; }
public string InitialDirectory { get; set; }
//public bool ValidateNames { get; set; }
//public bool SupportMultiDottedExtensions { get; set; }
//public bool ShowHelp { get; set; }
public bool Multiselect { get; set; }
public bool RestoreDirectory { get; set; }
//public string Filter { get; set; }
public string SelectedPath { get; private set; }
public string[] SelectedPaths { get; private set; }
private FolderBrowserDialog FolderBrowser
{
get
{
return new FolderBrowserDialog()
{
ShowNewFolderButton = true,
Description = Title,
SelectedPath = InitialDirectory
};
}
}
private OpenFileDialog Dialog
{
get
{
return new OpenFileDialog()
{
Title = Title,
AddExtension = false,
AutoUpgradeEnabled = AutoUpgradeEnabled,
CheckFileExists = true,
CheckPathExists = CheckPathExists,
DefaultExt = string.Empty,
DereferenceLinks = false,
InitialDirectory = InitialDirectory,
ValidateNames = false,
SupportMultiDottedExtensions = false,
ShowHelp = false,
Multiselect = Multiselect,
RestoreDirectory = RestoreDirectory,
Filter = string.Empty,
FileName = SelectedPath
};
}
}
/// <param name="hWndOwner">Handle of the control or window to be the parent of the file dialog</param>
/// <returns>true if the user clicks OK</returns>
public DialogResult ShowDialog(IntPtr hWndOwner)
{
if (Environment.OSVersion.Version.Major >= 6)
{
OpenFileDialog dialog = Dialog;
DialogResult result = VistaDialog.Show(hWndOwner, dialog) != 0 ? DialogResult.Cancel : DialogResult.OK;
SelectedPath = dialog.FileName;
SelectedPaths = dialog.FileNames;
return result;
}
else
{
FolderBrowserDialog XPDialog = FolderBrowser;
DialogResult result = XPDialog.ShowDialog();
SelectedPath = XPDialog.SelectedPath;
return result;
}
}
private static class VistaDialog
{
private const BindingFlags c_flags = BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic;
private readonly static Assembly s_windowsFormsAssembly = typeof(FileDialog).Assembly;
private readonly static Type s_iFileDialogType = s_windowsFormsAssembly.GetType("System.Windows.Forms.FileDialogNative+IFileDialog");
private readonly static MethodInfo s_createVistaDialogMethodInfo = typeof(OpenFileDialog).GetMethod("CreateVistaDialog", c_flags);
private readonly static MethodInfo s_onBeforeVistaDialogMethodInfo = typeof(OpenFileDialog).GetMethod("OnBeforeVistaDialog", c_flags);
private readonly static MethodInfo s_getOptionsMethodInfo = typeof(FileDialog).GetMethod("GetOptions", c_flags);
private readonly static MethodInfo s_setOptionsMethodInfo = s_iFileDialogType.GetMethod("SetOptions", c_flags);
private readonly static uint s_fosPickFoldersBitFlag = (uint)s_windowsFormsAssembly
.GetType("System.Windows.Forms.FileDialogNative+FOS")
.GetField("FOS_PICKFOLDERS")
.GetValue(null);
private readonly static ConstructorInfo s_vistaDialogEventsConstructorInfo = s_windowsFormsAssembly
.GetType("System.Windows.Forms.FileDialog+VistaDialogEvents")
.GetConstructor(c_flags, null, new[] { typeof(FileDialog) }, null);
private readonly static MethodInfo s_adviseMethodInfo = s_iFileDialogType.GetMethod("Advise");
private readonly static MethodInfo s_unAdviseMethodInfo = s_iFileDialogType.GetMethod("Unadvise");
private readonly static MethodInfo s_showMethodInfo = s_iFileDialogType.GetMethod("Show");
public static int Show(IntPtr ownerHandle, OpenFileDialog dialog)
{
var iFileDialog = s_createVistaDialogMethodInfo.Invoke(dialog, new object[] { });
s_onBeforeVistaDialogMethodInfo.Invoke(dialog, new[] { iFileDialog });
s_setOptionsMethodInfo.Invoke(iFileDialog, new object[] { (uint)s_getOptionsMethodInfo.Invoke(dialog, new object[] { }) | s_fosPickFoldersBitFlag });
var adviseParametersWithOutputConnectionToken = new[] { s_vistaDialogEventsConstructorInfo.Invoke(new object[] { dialog }), 0U };
s_adviseMethodInfo.Invoke(iFileDialog, adviseParametersWithOutputConnectionToken);
try
{
return (int)s_showMethodInfo.Invoke(iFileDialog, new object[] { ownerHandle });
}
finally
{
s_unAdviseMethodInfo.Invoke(iFileDialog, new[] { adviseParametersWithOutputConnectionToken[1] });
}
}
}
}
Example:
OpenFolderDialog folder = new OpenFolderDialog()
{
Title = "Odaberi odredišnu mapu/folder",
AutoUpgradeEnabled = true,
CheckPathExists = true,
InitialDirectory =
Environment.GetFolderPath
(Environment.SpecialFolder.DesktopDirectory),
Multiselect = true,
RestoreDirectory = true
};
System.Windows.Forms.DialogResult result = folder.ShowDialog(IntPtr.Zero);
if (result.Equals(System.Windows.Forms.DialogResult.OK))
System.Windows.Forms.MessageBox.Show(folder.SelectedPath + " Paths:" + folder.SelectedPaths.Length);
