using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using Microsoft.Win32;
public class RegistryBrowser : System.Windows.Forms.Form
{
private System.Windows.Forms.TreeView tvRegistry;
private System.Windows.Forms.ImageList ilTreeImages;
public RegistryBrowser()
{
InitializeComponent();
RootNodes();
}
private void InitializeComponent()
{
this.tvRegistry = new System.Windows.Forms.TreeView();
this.ilTreeImages = new System.Windows.Forms.ImageList();
this.SuspendLayout();
//
// tvRegistry
//
this.tvRegistry.Dock = System.Windows.Forms.DockStyle.Fill;
this.tvRegistry.Name = "tvRegistry";
this.tvRegistry.Size = new System.Drawing.Size(392, 333);
this.tvRegistry.TabIndex = 0;
this.tvRegistry.BeforeExpand += new System.Windows.Forms.TreeViewCancelEventHandler(this.tvRegistry_BeforeExpand);
//
// ilTreeImages
//
this.ilTreeImages.ColorDepth = System.Windows.Forms.ColorDepth.Depth8Bit;
this.ilTreeImages.TransparentColor = System.Drawing.Color.Transparent;
//
// RegistryBrowser
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(392, 333);
this.Controls.AddRange(new System.Windows.Forms.Control[] {
this.tvRegistry});
this.Name = "RegistryBrowser";
this.Text = "Registry Browser";
this.ResumeLayout(false);
}
static void Main()
{
Application.Run(new RegistryBrowser());
}
private void tvRegistry_BeforeExpand(object sender, System.Windows.Forms.TreeViewCancelEventArgs e)
{
tvRegistry.BeginUpdate();
foreach (TreeNode tn in e.Node.Nodes)
{
AddBranch(tn);
}
tvRegistry.EndUpdate();
}
public void AddBranch(TreeNode tn)
{
tn.Nodes.Clear();
string strRegistryPath = tn.FullPath;
RegistryKey regBranch = null;
if (strRegistryPath.StartsWith("HKEY_CLASSES_ROOT"))
regBranch = Registry.ClassesRoot;
else if (strRegistryPath.StartsWith("HKEY_CURRENT_USER"))
regBranch = Registry.CurrentUser;
else if (strRegistryPath.StartsWith("HKEY_LOCAL_MACHINE"))
regBranch = Registry.LocalMachine;
else if (strRegistryPath.StartsWith("HKEY_USERS"))
regBranch = Registry.Users;
RegistryKey regSubKey = null;
try
{
if (null != tn.Parent)
{
// we need the path minus the top level tree
int nPosPathSeparator = strRegistryPath.IndexOf(this.tvRegistry.PathSeparator);
string strSubkey = strRegistryPath.Substring(nPosPathSeparator+1);
regSubKey = regBranch.OpenSubKey(strSubkey);
}
else
regSubKey = regBranch;
}
catch
{
return;
}
string[] astrSubkeyNames = regSubKey.GetSubKeyNames();
for (int i=0; i < astrSubkeyNames.Length; i++)
{
TreeNode tnBranch = new TreeNode(astrSubkeyNames[i],0,1);
tn.Nodes.Add(tnBranch);
}
}
public void RootNodes()
{
tvRegistry.BeginUpdate();
TreeNode tnHKCR = new TreeNode("HKEY_CLASSES_ROOT",0,1);
tvRegistry.Nodes.Add(tnHKCR);
AddBranch(tnHKCR);
TreeNode tnHKCU = new TreeNode("HKEY_CURRENT_USER",0,1);
tvRegistry.Nodes.Add(tnHKCU);
AddBranch(tnHKCU);
TreeNode tnHKLM = new TreeNode("HKEY_LOCAL_MACHINE",0,1);
tvRegistry.Nodes.Add(tnHKLM);
AddBranch(tnHKLM);
TreeNode tnHKU = new TreeNode("HKEY_USERS",0,1);
tvRegistry.Nodes.Add(tnHKU);
AddBranch(tnHKU);
tvRegistry.SelectedNode = tnHKLM;
tvRegistry.EndUpdate();
}
}