private static List <RemoteApplication> EnumerateUninstallKeys(RegistryKey key)
{
var apps = new List <RemoteApplication>();
if (key == null)
{
return(apps);
}
foreach (string subKeyName in key.GetSubKeyNames())
{
using (RegistryKey subKey = key.OpenSubKey(subKeyName))
{
var app = new RemoteApplication();
if (subKey.GetValue("SystemComponent") != null && subKey.GetValueKind("SystemComponent") == RegistryValueKind.DWord)
{
Int64 val = Convert.ToInt64(subKey.GetValue("SystemComponent").ToString());
if (val == 1)
{
continue;
}
}
if (subKey.GetValue("ParentKeyName") != null && subKey.GetValue("ParentKeyName").ToString().Length > 0)
{
continue;
}
if (subKey.GetValue("ReleaseType") != null && (subKey.GetValue("ReleaseType").ToString().Contains("Update") || subKey.GetValue("ReleaseType").ToString() == "Hotfix"))
{
continue;
}
if (subKey.GetValue("DisplayName") != null)
{
app.DisplayName = subKey.GetValue("DisplayName").ToString();
}
else
{
continue;
}
if (subKey.GetValue("Publisher") != null)
{
app.Publisher = subKey.GetValue("Publisher").ToString();
}
if (subKey.GetValue("DisplayVersion") != null)
{
app.Version = subKey.GetValue("DisplayVersion").ToString();
}
if (subKey.GetValue("UninstallString") != null)
{
app.UninstallPath = subKey.GetValue("UninstallString").ToString();
}
apps.Add(app);
}
}
return(apps);
}
public static List <RemoteApplication> GetInstalledApplications()
{
var apps = new List <RemoteApplication>();
var taskResult = new TaskResult();
Result = taskResult;
const string uninstallKey = @"SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall";
const string uninstallKey32on64 = @"SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall";
var managementScope = new ManagementScope($@"\\{ComputerName}\root\CIMV2");
ManagementBaseObject inParams = null;
ManagementBaseObject outParams = null;
try
{
using (var wmiRegistry = new ManagementClass(managementScope, new ManagementPath("StdRegProv"), null))
{
List <string> subKeys = null;
List <string> subKeys32on64 = null;
var uninstallKeys = new List <string>();
// Get uninstall subkeys.
inParams = wmiRegistry.GetMethodParameters("EnumKey");
inParams["sSubKeyName"] = uninstallKey;
outParams = wmiRegistry.InvokeMethod("EnumKey", inParams, null);
if (outParams["sNames"] != null)
{
subKeys = new List <string>((string[])outParams["sNames"]).Select(x => $@"{uninstallKey}\{x}").ToList();
}
// Get 32-bit on 64-bit uninstall subkeys.
inParams["sSubKeyName"] = uninstallKey32on64;
outParams = wmiRegistry.InvokeMethod("EnumKey", inParams, null);
if (outParams["sNames"] != null)
{
subKeys32on64 = new List <string>((string[])outParams["sNames"]).Select(x => $@"{uninstallKey32on64}\{x}").ToList();
}
// Combine lists of keys.
if (subKeys != null)
{
uninstallKeys.AddRange(subKeys);
}
if (subKeys32on64 != null)
{
uninstallKeys.AddRange(subKeys32on64);
}
// Enumerate keys.
foreach (string subKey in uninstallKeys)
{
// Get SystemComponent (DWORD) value. Skip key if this value exists and is set to '1'.
inParams = wmiRegistry.GetMethodParameters("GetDWORDValue");
inParams["sSubKeyName"] = subKey;
inParams["sValueName"] = "SystemComponent";
outParams = wmiRegistry.InvokeMethod("GetDWORDValue", inParams, null);
if (outParams["uValue"] != null && (UInt32)outParams["uValue"] == 1)
{
continue;
}
// Get ParentKeyName (String) value. Skip key if this value exists.
inParams = wmiRegistry.GetMethodParameters("GetStringValue");
inParams["sSubKeyName"] = subKey;
inParams["sValueName"] = "ParentKeyName";
outParams = wmiRegistry.InvokeMethod("GetStringValue", inParams, null);
if (outParams["sValue"] != null && ((string)outParams["sValue"]).Length > 0)
{
continue;
}
// Get ReleaseType (String) value. Skip key if this value contains 'Update' or 'Hotfix'.
inParams["sSubKeyName"] = subKey;
inParams["sValueName"] = "ReleaseType";
outParams = wmiRegistry.InvokeMethod("GetStringValue", inParams, null);
if (outParams["sValue"] != null && (((string)outParams["sValue"]).Contains("Update") || ((string)outParams["sValue"]).Equals("Hotfix")))
{
continue;
}
var app = new RemoteApplication();
// Get DisplayName (String) value.
inParams["sSubKeyName"] = subKey;
inParams["sValueName"] = "DisplayName";
outParams = wmiRegistry.InvokeMethod("GetStringValue", inParams, null);
if (outParams["sValue"] != null)
{
app.DisplayName = (string)outParams["sValue"];
}
else
{
continue;
}
// Get Publisher (String) value.
inParams["sSubKeyName"] = subKey;
inParams["sValueName"] = "Publisher";
outParams = wmiRegistry.InvokeMethod("GetStringValue", inParams, null);
if (outParams["sValue"] != null)
{
app.Publisher = (string)outParams["sValue"];
}
// Get DisplayVersion (String) value.
inParams["sSubKeyName"] = subKey;
inParams["sValueName"] = "DisplayVersion";
outParams = wmiRegistry.InvokeMethod("GetStringValue", inParams, null);
if (outParams["sValue"] != null)
{
app.Version = (string)outParams["sValue"];
}
// Get UninstallString (String) value.
inParams["sSubKeyName"] = subKey;
inParams["sValueName"] = "UninstallString";
outParams = wmiRegistry.InvokeMethod("GetStringValue", inParams, null);
if (outParams["sValue"] != null)
{
app.UninstallPath = (string)outParams["sValue"];
}
apps.Add(app);
}
}
taskResult.DidTaskSucceed = true;
}
catch (ManagementException ex) when(ex.ErrorCode == ManagementStatus.NotFound)
{
// Target OS might not support WMI StdRegProv. Attempt to gather data using remote registry.
apps = new List <RemoteApplication>();
const string serviceName = "RemoteRegistry";
bool isLocal = ComputerName.ToUpper() == Environment.MachineName.ToUpper() ? true : false;
bool isServiceRunning = true;
// If the target computer is remote, then start the Remote Registry service.
using (
GlobalVar.UseAlternateCredentials
? UserImpersonation.Impersonate(GlobalVar.AlternateUsername, GlobalVar.AlternateDomain, GlobalVar.AlternatePassword)
: null)
using (var sc = new ServiceController(serviceName, ComputerName))
{
try
{
if (!isLocal && sc.Status != ServiceControllerStatus.Running)
{
isServiceRunning = false;
sc.Start();
}
}
catch (Exception)
{
}
try
{
using (RegistryKey key = RegistryKey.OpenRemoteBaseKey(RegistryHive.LocalMachine, ComputerName))
{
using (RegistryKey mainKey64 = key.OpenSubKey(uninstallKey))
apps.AddRange(EnumerateUninstallKeys(mainKey64));
using (RegistryKey mainKey32 = key.OpenSubKey(uninstallKey32on64))
apps.AddRange(EnumerateUninstallKeys(mainKey32));
}
taskResult.DidTaskSucceed = true;
}
catch
{
taskResult.DidTaskSucceed = false;
}
// Cleanup.
if (!isLocal && !isServiceRunning)
{
try
{
if (sc != null)
{
sc.Stop();
}
}
catch (Exception)
{
}
}
}
}
catch
{
// Do nothing.
}
finally
{
if (inParams != null)
{
inParams.Dispose();
}
if (outParams != null)
{
outParams.Dispose();
}
}
// Get Internet Explorer version.
if (taskResult.DidTaskSucceed && apps.Count > 0)
{
try
{
var internetExplorerVersion = FileVersionInfo.GetVersionInfo($@"\\{ComputerName}\C$\Program Files\Internet Explorer\iexplore.exe");
if (internetExplorerVersion != null && internetExplorerVersion.ProductVersion.Length > 0)
{
apps.Add(new RemoteApplication
{
DisplayName = "Internet Explorer",
Publisher = "Microsoft Corporation",
Version = internetExplorerVersion.ProductVersion
});
}
}
catch { }
}
return(apps);
}
