但是您可以使用 System.Windows.Forms.OpenFileDialog() 来实现它。它允许您选择多个文件夹
请看以下示例：
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Reflection;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace FolderDialog
{
public class FolderSelectDialog
{
System.Windows.Forms.OpenFileDialog ofd = null;
public FolderSelectDialog()
{
ofd = new System.Windows.Forms.OpenFileDialog();
ofd.Filter = "Folders|\n";
ofd.AddExtension = false;
ofd.CheckFileExists = false;
ofd.DereferenceLinks = true;
ofd.Multiselect = Multiselect;
}
public string InitialDirectory
{
get { return ofd.InitialDirectory; }
set { ofd.InitialDirectory = value == null || value.Length == 0 ? Environment.CurrentDirectory : value; }
}
public string Title
{
get { return ofd.Title; }
set { ofd.Title = value == null ? "Select a folder" : value; }
}
public bool Multiselect
{
get { return ofd.Multiselect; }
set { ofd.Multiselect = value == false ? false : value; }
}
public string FileName
{
get { return ofd.FileName; }
}
public string[] FileNames
{
get { return ofd.FileNames; }
}
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(ofd, "CreateVistaDialog");
r.Call(ofd, "OnBeforeVistaDialog", dialog);
uint options = (uint)r.CallAs(typeof(System.Windows.Forms.FileDialog), ofd, "GetOptions");
options |= (uint)r.GetEnum("FileDialogNative.FOS", "FOS_PICKFOLDERS");
r.CallAs(typeIFileDialog, dialog, "SetOptions", options);
object pfde = r.New("FileDialog.VistaDialogEvents", ofd);
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 fbd = new FolderBrowserDialog();
fbd.Description = this.Title;
fbd.SelectedPath = this.InitialDirectory;
fbd.ShowNewFolderButton = false;
if (fbd.ShowDialog(new WindowWrapper(hWndOwner)) != DialogResult.OK) return false;
ofd.FileName = fbd.SelectedPath;
flag = true;
}
return flag;
}
public class WindowWrapper : System.Windows.Forms.IWin32Window
{
public WindowWrapper(IntPtr handle)
{
_hwnd = handle;
}
public IntPtr Handle
{
get { return _hwnd; }
}
private IntPtr _hwnd;
}
public class Reflector
{
string m_ns;
Assembly m_asmb;
public Reflector(string ns)
: this(ns, ns)
{ }
public Reflector(string an, string ns)
{
m_ns = ns;
m_asmb = null;
foreach (AssemblyName aN in Assembly.GetExecutingAssembly().GetReferencedAssemblies())
{
if (aN.FullName.StartsWith(an))
{
m_asmb = Assembly.Load(aN);
break;
}
}
}
public Type GetType(string typeName)
{
Type type = null;
string[] names = typeName.Split('.');
if (names.Length > 0)
type = m_asmb.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)
{
return Call2(obj, func, parameters);
}
public object Call2(object obj, string func, object[] parameters)
{
return CallAs2(obj.GetType(), obj, func, parameters);
}
public object CallAs(Type type, object obj, string func, params object[] parameters)
{
return 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)
{
return 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);
}
}
}
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
public static string OpenFileBrowserDialog(bool multiselect) {
FolderSelectDialog fbd = new FolderSelectDialog();
fbd.Multiselect = multiselect;
fbd.ShowDialog();
string selected_folders = "";
if (multiselect)
{
string[] names = fbd.FileNames;
selected_folders = string.Join(",", names);
}
else
{
selected_folders = fbd.FileName;
}
return selected_folders;
}
private void Form1_Load(object sender, EventArgs e)
{
string name = OpenFileBrowserDialog(true);
MessageBox.Show(name);
Environment.Exit(0);
}
}
}
没有对多文件夹选择的原生支持FolderBrowserDialog，但您可以结合树视图和“多选”构建自己的对话框。
看一看：
http://www.codeproject.com/Articles/13375/File-Explorer-using-Treeview-controller-in-C-2-0
默认的 FolderBrowserDialog 不允许您选择多个文件夹。
您可以考虑使用像FolderView这样的第 3 方控件- 它还带有一个使用 FolderView 的即用型自定义 FolderBrowserDialog。
免责声明：我为 FolderView 的开发商 LogicNP Software 工作。
不幸的是，你不能这样做FolderBrowserDialog
您可以结帐BetterFolderBrowser。它是一个 .NET 库，可以满足您的需要以及更多功能。同样，它提供了一种更易于使用的模仿OpenFileDialog对话窗口的文件夹浏览体验。希望能帮助到你。