Best way to determine if ReportViewer is installed

Question

What is the best way to find out if reportviewer and WindowsInstaller-KB893803-v2-x86 is installed on a PC? Is there a way to find out what public key to use to find out if a specific program is installed on a PC? (Tried this, didn't work)

Best Way To Determine If .NET 3.5 Is Installed This is how to check if .NET 3.5 is installed, but i take it you need a another public key to know if report viewer is installed, but I don't know how to get the public key.

All I can think of is to check if the installation directory exists on the computer, would that be an acceptable way to check?

Answer 1

You could check in the Registry

    public bool IsInstalled()
    {
        RegistryKey registryBase = RegistryKey.OpenRemoteBaseKey(RegistryHive.LocalMachine, string.Empty);
        if (registryBase != null)
        {
            return registryBase.OpenSubKey("Software\\Microsoft\\ReportViewer\\v2.0.50727") != null;
        }
        return false;
    }

Answer 2

In my machine (Win7 & Server 2012), the registry key is different.

bool exist = false;
RegistryKey registryBase = RegistryKey.OpenRemoteBaseKey(RegistryHive.LocalMachine, string.Empty);
if (registryBase != null)
{
    exist = registryBase.OpenSubKey("Software\\Wow6432Node\\Microsoft\\.NETFramework\\v2.0.50727\\AssemblyFoldersEx\\ReportViewer v10") != null;
}