从PropertyGrid中显示详细的文件夹浏览器 [英] Show detailed Folder Browser from a PropertyGrid

问题描述

请注意，这不是一个问题重复

如何展示详细的FolderBrowser如从PropertyGrid中下面的图片（从字段/属性里面有省略号......）

How to show a detailed FolderBrowser as in the image below from a PropertyGrid (from the field/property which has ellipses ...)

使用

[EditorAttribute(typeof(System.Windows.Forms.Design.FileNameEditor), typeof(System.Drawing.Design.UITypeEditor))]

[EditorAttribute(typeof(System.Windows.Forms.Design.FolderNameEditor), typeof(System.Drawing.Design.UITypeEditor))]

我们得到简约的文件夹浏览器

We get the minimalistic folder browser

推荐答案

下面是一个自定义UITypeEditor的，允许你使用Vista文件夹浏览器：

Here is a custom UITypeEditor that allows you to use the Vista Folder Browser:

您可以使用它像任何其他编辑：

You can use it like any other editor:

[EditorAttribute(typeof(FolderNameEditor2), typeof(System.Drawing.Design.UITypeEditor))]

这依赖于我在这个场合写了一个自定义的FolderBrowser2类。当然，这将在Windows Vista和更高版本才能正常工作。在previous Windows版本，还有比简单的一没有其他文件夹的浏览器。

It relies on a custom FolderBrowser2 class that I have written for the occasion. Of course, this will work only on Windows Vista and higher. On previous Windows version, there is no other folder browser than the simple one.

public class FolderNameEditor2 : UITypeEditor
{
    public override UITypeEditorEditStyle GetEditStyle(ITypeDescriptorContext context)
    {
        return UITypeEditorEditStyle.Modal;
    }

    public override object EditValue(ITypeDescriptorContext context, IServiceProvider provider, object value)
    {
        FolderBrowser2 browser = new FolderBrowser2();
        if (value != null)
        {
            browser.DirectoryPath = string.Format("{0}", value);
        }

        if (browser.ShowDialog(null) == DialogResult.OK)
            return browser.DirectoryPath;

        return value;
    }
}

public class FolderBrowser2
{
    public string DirectoryPath { get; set; }

    public DialogResult ShowDialog(IWin32Window owner)
    {
        IntPtr hwndOwner = owner != null ? owner.Handle : GetActiveWindow();

        IFileOpenDialog dialog = (IFileOpenDialog)new FileOpenDialog();
        try
        {
            IShellItem item;
            if (!string.IsNullOrEmpty(DirectoryPath))
            {
                IntPtr idl;
                uint atts = 0;
                if (SHILCreateFromPath(DirectoryPath, out idl, ref atts) == 0)
                {
                    if (SHCreateShellItem(IntPtr.Zero, IntPtr.Zero, idl, out item) == 0)
                    {
                        dialog.SetFolder(item);
                    }
                }
            }
            dialog.SetOptions(FOS.FOS_PICKFOLDERS | FOS.FOS_FORCEFILESYSTEM);
            uint hr = dialog.Show(hwndOwner);
            if (hr == ERROR_CANCELLED)
                return DialogResult.Cancel;

            if (hr != 0)
                return DialogResult.Abort;

            dialog.GetResult(out item);
            string path;
            item.GetDisplayName(SIGDN.SIGDN_FILESYSPATH, out path);
            DirectoryPath = path;
            return DialogResult.OK;
        }
        finally
        {
            Marshal.ReleaseComObject(dialog);
        }
    }

    [DllImport("shell32.dll")]
    private static extern int SHILCreateFromPath([MarshalAs(UnmanagedType.LPWStr)] string pszPath, out IntPtr ppIdl, ref uint rgflnOut);

    [DllImport("shell32.dll")]
    private static extern int SHCreateShellItem(IntPtr pidlParent, IntPtr psfParent, IntPtr pidl, out IShellItem ppsi);

    [DllImport("user32.dll")]
    private static extern IntPtr GetActiveWindow();

    private const uint ERROR_CANCELLED = 0x800704C7;

    [ComImport]
    [Guid("DC1C5A9C-E88A-4dde-A5A1-60F82A20AEF7")]
    private class FileOpenDialog
    {
    }

    [ComImport]
    [Guid("42f85136-db7e-439c-85f1-e4075d135fc8")]
    [InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
    private interface IFileOpenDialog
    {
        [PreserveSig]
        uint Show([In] IntPtr parent); // IModalWindow
        void SetFileTypes();  // not fully defined
        void SetFileTypeIndex([In] uint iFileType);
        void GetFileTypeIndex(out uint piFileType);
        void Advise(); // not fully defined
        void Unadvise();
        void SetOptions([In] FOS fos);
        void GetOptions(out FOS pfos);
        void SetDefaultFolder(IShellItem psi);
        void SetFolder(IShellItem psi);
        void GetFolder(out IShellItem ppsi);
        void GetCurrentSelection(out IShellItem ppsi);
        void SetFileName([In, MarshalAs(UnmanagedType.LPWStr)] string pszName);
        void GetFileName([MarshalAs(UnmanagedType.LPWStr)] out string pszName);
        void SetTitle([In, MarshalAs(UnmanagedType.LPWStr)] string pszTitle);
        void SetOkButtonLabel([In, MarshalAs(UnmanagedType.LPWStr)] string pszText);
        void SetFileNameLabel([In, MarshalAs(UnmanagedType.LPWStr)] string pszLabel);
        void GetResult(out IShellItem ppsi);
        void AddPlace(IShellItem psi, int alignment);
        void SetDefaultExtension([In, MarshalAs(UnmanagedType.LPWStr)] string pszDefaultExtension);
        void Close(int hr);
        void SetClientGuid();  // not fully defined
        void ClearClientData();
        void SetFilter([MarshalAs(UnmanagedType.Interface)] IntPtr pFilter);
        void GetResults([MarshalAs(UnmanagedType.Interface)] out IntPtr ppenum); // not fully defined
        void GetSelectedItems([MarshalAs(UnmanagedType.Interface)] out IntPtr ppsai); // not fully defined
    }

    [ComImport]
    [Guid("43826D1E-E718-42EE-BC55-A1E261C37BFE")]
    [InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
    private interface IShellItem
    {
        void BindToHandler(); // not fully defined
        void GetParent(); // not fully defined
        void GetDisplayName([In] SIGDN sigdnName, [MarshalAs(UnmanagedType.LPWStr)] out string ppszName);
        void GetAttributes();  // not fully defined
        void Compare();  // not fully defined
    }

    private enum SIGDN : uint
    {
        SIGDN_DESKTOPABSOLUTEEDITING = 0x8004c000,
        SIGDN_DESKTOPABSOLUTEPARSING = 0x80028000,
        SIGDN_FILESYSPATH = 0x80058000,
        SIGDN_NORMALDISPLAY = 0,
        SIGDN_PARENTRELATIVE = 0x80080001,
        SIGDN_PARENTRELATIVEEDITING = 0x80031001,
        SIGDN_PARENTRELATIVEFORADDRESSBAR = 0x8007c001,
        SIGDN_PARENTRELATIVEPARSING = 0x80018001,
        SIGDN_URL = 0x80068000
    }

    [Flags]
    private enum FOS
    {
        FOS_ALLNONSTORAGEITEMS = 0x80,
        FOS_ALLOWMULTISELECT = 0x200,
        FOS_CREATEPROMPT = 0x2000,
        FOS_DEFAULTNOMINIMODE = 0x20000000,
        FOS_DONTADDTORECENT = 0x2000000,
        FOS_FILEMUSTEXIST = 0x1000,
        FOS_FORCEFILESYSTEM = 0x40,
        FOS_FORCESHOWHIDDEN = 0x10000000,
        FOS_HIDEMRUPLACES = 0x20000,
        FOS_HIDEPINNEDPLACES = 0x40000,
        FOS_NOCHANGEDIR = 8,
        FOS_NODEREFERENCELINKS = 0x100000,
        FOS_NOREADONLYRETURN = 0x8000,
        FOS_NOTESTFILECREATE = 0x10000,
        FOS_NOVALIDATE = 0x100,
        FOS_OVERWRITEPROMPT = 2,
        FOS_PATHMUSTEXIST = 0x800,
        FOS_PICKFOLDERS = 0x20,
        FOS_SHAREAWARE = 0x4000,
        FOS_STRICTFILETYPES = 4
    }
}

这篇关于从PropertyGrid中显示详细的文件夹浏览器的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！