ArcObjects Library Reference  

RecentFilesRegistryHelper

Recently used filesóCommand, MultiItem, and ComboBox

[C#]

RecentFilesRegistryHelper.cs

using System;
using System.Collections.Generic;
using System.Text;
using ESRI.ArcGIS.Framework;
using Microsoft.Win32;

namespace RecentFilesCommandsCS
{
    /// <summary>
    /// Helper class to process recent file lists stored in the registry
    /// </summary>
    class RecentFilesRegistryHelper
    {
        const string RecentFileRegistryKeyPath = @"Software\ESRI\{0}\Recent File List";
        public static string[] GetRecentFiles(IApplication app)
        {
            List<string> recentFilePaths = new List<string>();

            //Read the registry to get the recent file list
            string openKey = string.Format(RecentFileRegistryKeyPath, app.Name);
            RegistryKey recentListKey = Registry.CurrentUser.OpenSubKey(openKey);
            if (recentListKey != null)
            {
                string[] listNames = recentListKey.GetValueNames();
                foreach (string name in listNames)
                {
                    string fileName = recentListKey.GetValue(name, string.Empty).ToString();
                    if (!string.IsNullOrEmpty(fileName))
                        recentFilePaths.Add(fileName);
                }
            }

            return recentFilePaths.ToArray();
        }
    }
}

[Visual Basic .NET]

RecentFilesRegistryHelper.vb

Imports System.Collections.Generic
Imports Microsoft.Win32

Module RecentFilesRegistryHelper
    Const RecentFileRegistryKeyPath As String = "Software\ESRI\{0}\Recent File List"

    ''' <summary>
    ''' Helper function to process recent file lists stored in the registry
    ''' </summary>
    Public Function GetRecentFiles(ByVal app As ESRI.ArcGIS.Framework.IApplication) As String()
        Dim recentFilePaths As List(Of String) = New List(Of String)

        'Read the registry to get the recent file list
    Dim openKey As String = String.Format(RecentFileRegistryKeyPath, app.Name)
        Dim recentListKey As RegistryKey = Registry.CurrentUser.OpenSubKey(openKey)
        If Not recentListKey Is Nothing Then
            Dim listNames As String() = recentListKey.GetValueNames()
            For Each name As String In listNames
                Dim fileName As String = recentListKey.GetValue(name, String.Empty).ToString()
                If Not String.IsNullOrEmpty(fileName) Then
                    recentFilePaths.Add(fileName)
                End If
            Next
        End If

        Return recentFilePaths.ToArray()
    End Function

End Module