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| using System.Reflection;
using System.Windows.Forms;
using System;
public class FolderSelectDialog
{
private OpenFileDialog openFileDialog = null;
public FolderSelectDialog()
{
openFileDialog = new OpenFileDialog
{
Filter = "Folders|\n",
AddExtension = false,
CheckFileExists = false,
DereferenceLinks = true,
Multiselect = false
};
}
#region Properties
public string InitialDirectory
{
get { return openFileDialog.InitialDirectory; }
set { openFileDialog.InitialDirectory = value == null || value.Length == 0 ? Environment.CurrentDirectory : value; }
}
public string Title
{
get { return openFileDialog.Title; }
set { openFileDialog.Title = value ?? "Select a folder"; }
}
public string FolderName { get { return openFileDialog.FileName; } }
#endregion
#region Methods
public bool ShowDialog() { return ShowDialog(IntPtr.Zero); }
public bool ShowDialog(IntPtr hWndOwner)
{
bool flag = false;
if (Environment.OSVersion.Version.Major >= 6)
{
var r = new Reflector("System.Windows.Forms");
uint num = 0;
Type typeIFileDialog = r.GetType("FileDialogNative.IFileDialog");
object dialog = r.Call(openFileDialog, "CreateVistaDialog");
r.Call(openFileDialog, "OnBeforeVistaDialog", dialog);
uint options = (uint)r.CallAs(typeof(FileDialog), openFileDialog, "GetOptions");
options |= (uint)r.GetEnum("FileDialogNative.FOS", "FOS_PICKFOLDERS");
r.CallAs(typeIFileDialog, dialog, "SetOptions", options);
object pfde = r.New("FileDialog.VistaDialogEvents", openFileDialog);
object[] parameters = new object[] { pfde, num };
r.CallAs2(typeIFileDialog, dialog, "Advise", parameters);
num = (uint)parameters[1];
try
{
int num2 = (int)r.CallAs(typeIFileDialog, dialog, "Show", hWndOwner);
flag = 0 == num2;
}
finally
{
r.CallAs(typeIFileDialog, dialog, "Unadvise", num);
GC.KeepAlive(pfde);
}
}
else
{
var folderBrowserDialog = new FolderBrowserDialog
{
Description = this.Title,
SelectedPath = this.InitialDirectory,
ShowNewFolderButton = false
};
if (folderBrowserDialog.ShowDialog(new WindowWrapper(hWndOwner)) != DialogResult.OK) return false;
openFileDialog.FileName = folderBrowserDialog.SelectedPath;
flag = true;
}
return flag;
}
#endregion
}
public class WindowWrapper : IWin32Window
{
private IntPtr _hwnd;
public WindowWrapper(IntPtr handle) { _hwnd = handle; }
public IntPtr Handle { get { return _hwnd; } }
}
public class Reflector
{
#region variables
string m_ns;
public Assembly assembly { get; private set; }
#endregion
#region Constructors
public Reflector(string ns) : this(ns, ns) { }
public Reflector(string assemblyName, string ns)
{
m_ns = ns;
assembly = null;
foreach (AssemblyName name in Assembly.GetExecutingAssembly().GetReferencedAssemblies())
{
if (name.FullName.StartsWith(assemblyName))
{
assembly = Assembly.Load(name);
break;
}
}
}
public Reflector(Assembly assembly) { this.assembly = assembly; }
#endregion
#region Methods
public Type GetType(string typeName)
{
Type type = null;
string[] names = typeName.Split('.');
if (names.Length > 0) type = assembly.GetType(m_ns + "." + names[0]);
for (int i = 1; i < names.Length; ++i)
{
type = type.GetNestedType(names[i], BindingFlags.NonPublic);
}
return type;
}
public object New(string name, params object[] parameters)
{
Type type = GetType(name);
ConstructorInfo[] ctorInfos = type.GetConstructors();
foreach (ConstructorInfo ci in ctorInfos)
{
try
{
return ci.Invoke(parameters);
}
catch { }
}
return null;
}
public object Call(object obj, string func, params object[] parameters) => Call2(obj, func, parameters);
public object Call2(object obj, string func, object[] parameters) => CallAs2(obj.GetType(), obj, func, parameters);
public object CallAs(Type type, object obj, string func, params object[] parameters) => CallAs2(type, obj, func, parameters);
public object CallAs2(Type type, object obj, string func, object[] parameters)
{
MethodInfo methInfo = type.GetMethod(func, BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);
return methInfo.Invoke(obj, parameters);
}
public object Get(object obj, string prop) => GetAs(obj.GetType(), obj, prop);
public object GetAs(Type type, object obj, string prop)
{
PropertyInfo propInfo = type.GetProperty(prop, BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);
return propInfo.GetValue(obj, null);
}
public object GetEnum(string typeName, string name)
{
Type type = GetType(typeName);
FieldInfo fieldInfo = type.GetField(name);
return fieldInfo.GetValue(null);
}
#endregion
}
|
