FileDialogCustomPlace.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / FX-1434 / FX-1434 / 1.0 / untmp / whidbey / REDBITS / ndp / fx / src / WinForms / Managed / System / WinForms / FileDialogCustomPlace.cs / 1 / FileDialogCustomPlace.cs
                        

                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

using System; 
using System.IO; 
using System.Security;
using System.Security.Permissions; 
using System.Text;

namespace System.Windows.Forms
{ 
//Sample Guids
//          internal const string ComputerFolder = "0AC0837C-BBF8-452A-850D-79D08E667CA7"; 
//          internal const string Favorites = "1777F761-68AD-4D8A-87BD-30B759FA33DD"; 
//          internal const string Documents = "FDD39AD0-238F-46AF-ADB4-6C85480369C7";
//          internal const string Profile = "5E6C858F-0E22-4760-9AFE-EA3317B67173"; 

    public class FileDialogCustomPlace
    {
        private string _path = ""; 
        private Guid   _knownFolderGuid = Guid.Empty;
 
        public FileDialogCustomPlace(string path) 
        {
            this.Path = path; 
        }

        public FileDialogCustomPlace(Guid knownFolderGuid)
        { 
            this.KnownFolderGuid = knownFolderGuid;
        } 
 
        public string Path
        { 
            get
            {
                if (string.IsNullOrEmpty(this._path))
                { 
                    return String.Empty;
                } 
                return this._path; 
            }
            set 
            {
                this._path = value ?? "";
                this._knownFolderGuid = Guid.Empty;
            } 
        }
 
        public Guid KnownFolderGuid 
        {
            get 
            {
                return this._knownFolderGuid;
            }
            set 
            {
                this._path = String.Empty; 
                this._knownFolderGuid = value; 
            }
        } 

        public override string ToString()
        {
            return string.Format(System.Globalization.CultureInfo.CurrentCulture, "{0} Path: {1} KnownFolderGuid: {2}", base.ToString(), this.Path, this.KnownFolderGuid); 
        }
 
        internal FileDialogNative.IShellItem GetNativePath() 
        {
            //This can throw in a multitude of ways if the path or Guid doesn't correspond 
            //to an actual filesystem directory.  Caller is responsible for handling these situations.
            string filePathString = "";
            if (!string.IsNullOrEmpty(this._path))
            { 
                filePathString = this._path;
            } 
            else 
            {
                filePathString = GetFolderLocation(this._knownFolderGuid); 
            }

            if (string.IsNullOrEmpty(filePathString))
            { 
                return null;
            } 
            else 
            {
                return FileDialog.GetShellItemForPath(filePathString); 
            }
        }

        private static string GetFolderLocation(Guid folderGuid) 
        {
            //returns a null string if the path can't be found 
 
            //SECURITY: This exposes the filesystem path of the GUID.  The returned value
            // must not be made available to user code. 

            if (!UnsafeNativeMethods.IsVista)
            {
                return null; 
            }
 
            StringBuilder path = new StringBuilder(NativeMethods.MAX_PATH); 
            int result = UnsafeNativeMethods.Shell32.SHGetFolderPathEx(ref folderGuid, 0, IntPtr.Zero, path, (uint)path.Capacity);
            if (NativeMethods.S_OK == result) 
            {
                string ret = path.ToString();
                return ret;
            } 
            else
            { 
                // 0x80070002 is an explicit FileNotFound error. 
                return null;
            } 
        }
    }
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.

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