C#

const uint HKEY_LOCAL_MACHINE = unchecked((uint)0x80000002);
ManagementClass wmiRegistry = new ManagementClass("root/default", "StdRegProv", null);
 
//Enumerate subkeys
string keyPath = @"SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall";
object[] methodArgs = new object[] {HKEY_LOCAL_MACHINE, keyPath, null};
uint returnValue = (uint)wmiRegistry.InvokeMethod("EnumKey", methodArgs);
Console.WriteLine("Executing EnumKey() returns: {0}", returnValue);

if (null != methodArgs[2])
{
   string[] subKeys = methodArgs[2] as String[];
 
   if (subKeys == null) return;
 
   ManagementBaseObject inParam = wmiRegistry.GetMethodParameters("GetStringValue");
   inParam["hDefKey"] = HKEY_LOCAL_MACHINE;
   string keyName = "";
 
   foreach(string subKey in subKeys)
   {
      //Display application name
      keyPath = @"SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\" + subKey;
      keyName = "DisplayName";
      inParam["sSubKeyName"] = keyPath;
      inParam["sValueName"] = keyName;
      ManagementBaseObject outParam = wmiRegistry.InvokeMethod("GetStringValue", inParam, null);
 
      if ((uint)outParam["ReturnValue"] == 0)
         Console.WriteLine(outParam["sValue"]);
   }
}

ManagementObjectSearcher products = new ManagementObjectSearcher("SELECT * FROM Win32_Product");
 
foreach (ManagementObject product in products.Get())
{
   Console.WriteLine("Software name: {0}", product.Name);
   Console.WriteLine("Install date: {0}", product.InstallDate);
   ...
}

toink toink wrote:

how about if we will display the installdate and installlocation using the latter code? or using the registry?

toink toink wrote:

if inParam["sValueName"] = keyName is used to get the Displayname, how about the rest of the values? like installdate, softwarepath and the rest of the values?

ManagementObjectSearcher products = new ManagementObjectSearcher("SELECT * FROM Win32_Product");
foreach (ManagementObject product in products.Get())
{
   Console.WriteLine("Software name: {0}", product.Name);
   Console.WriteLine("Install date: {0}", product.InstallDate);
   ...
}