private static bool TryGetFrameworkVersionFromKey(RegistryKey key, out FrameworkVersion frameworkVersion)
{
frameworkVersion = null;
bool isInstalled;
if (TryGetIsInstalled(key, out isInstalled) && isInstalled)
{
Version version;
if (!TryGetVersionValue(key, out version))
{
return(false);
}
int?servicePack = null;
int servicePackRaw = 0;
if (TryGetServicePackValue(key, out servicePackRaw))
{
servicePack = servicePackRaw;
}
frameworkVersion = new FrameworkVersion(
version,
servicePack,
key.Name == "Client" ? FrameworkInstallationType.ClientProfile : FrameworkInstallationType.Full);
return(true);
}
return(false);
}
/// <summary>
/// Determines which versions are installed according to the registry.
/// </summary>
/// <returns>An array of .NET Framework versions.</returns>
public static FrameworkVersion[] GetInstalledVersions()
{
if (_versions != null)
{
return(_versions);
}
var versions = new List <FrameworkVersion>();
var frameworkSetupNDPNode = Registry.LocalMachine.OpenSubKey(@"SOFTWARE\Microsoft\NET Framework Setup\NDP");
if (frameworkSetupNDPNode != null)
{
foreach (var keyName in frameworkSetupNDPNode.GetSubKeyNames())
{
if (keyName[0] == 'v')
{
var key = frameworkSetupNDPNode.OpenSubKey(keyName);
if (key != null)
{
// key "v4" has a slightly different structure than the previous ones.
if (keyName == "v4")
{
// required by LiteDevelop, so is always installed.
versions.Add(new FrameworkVersion(new Version(4, 0), null, FrameworkInstallationType.ClientProfile));
versions.Add(new FrameworkVersion(new Version(4, 0), null, FrameworkInstallationType.Full));
foreach (var subKeyName in key.GetSubKeyNames())
{
var subKey = key.OpenSubKey(subKeyName);
if (subKey != null)
{
IEnumerable <FrameworkVersion> frameworkVersions;
// check if 4.5 and/or 4.5.1 is installed.
if (TryGetFramework45VersionsFromKey(subKey, out frameworkVersions))
{
versions.AddRange(frameworkVersions);
break;
}
subKey.Close();
}
}
}
else
{
// get 2.0 -> 3.5
FrameworkVersion frameworkVersion = null;
if (TryGetFrameworkVersionFromKey(key, out frameworkVersion))
{
versions.Add(frameworkVersion);
}
}
key.Close();
}
}
}
frameworkSetupNDPNode.Close();
}
return(_versions = versions.ToArray());
}
public bool Equals(FrameworkVersion version)
{
return this.Version == version.Version && ServicePack == version.ServicePack && InstallationType == version.InstallationType;
}
private static bool TryGetFrameworkVersionFromKey(RegistryKey key, out FrameworkVersion frameworkVersion)
{
frameworkVersion = null;
bool isInstalled;
if (TryGetIsInstalled(key, out isInstalled) && isInstalled)
{
Version version;
if (!TryGetVersionValue(key, out version))
{
return false;
}
int? servicePack = null;
int servicePackRaw = 0;
if (TryGetServicePackValue(key, out servicePackRaw))
{
servicePack = servicePackRaw;
}
frameworkVersion = new FrameworkVersion(
version,
servicePack,
key.Name == "Client" ? FrameworkInstallationType.ClientProfile : FrameworkInstallationType.Full);
return true;
}
return false;
}
public bool Equals(FrameworkVersion version)
{
return(this.Version == version.Version && ServicePack == version.ServicePack && InstallationType == version.InstallationType);
}