internal static bool IsDotNetFrameworkVersionInstalled(Version requiredVersion)
{
int num;
int num2;
int num3;
if (FrameworkRegistryInstallation.CanCheckFrameworkInstallation(requiredVersion, out num, out num2, out num3))
{
return(FrameworkRegistryInstallation.IsFrameworkInstalled(num, num2, num3));
}
return(FileSystemIsDotNetFrameworkVersionInstalled(requiredVersion));
}
/// <summary>
/// Check if the given version if the framework is installed
/// </summary>
/// <param name="majorVersion">Major version of .NET required, for .NET 3.5 this is 3.</param>
/// <param name="minorVersion">Minor version of .NET required, for .NET 3.5 this is 5.</param>
/// <param name="minimumSPVersion">Minimum SP version required. 0 (Zero) or less means no SP requirement.</param>
/// <returns>true if the framework is available. False if it is not available or that could not be determined.</returns>
internal static bool IsFrameworkInstalled(int majorVersion, int minorVersion, int minimumSPVersion)
{
string installKeyName, installValueName, spKeyName, spValueName;
if (!FrameworkRegistryInstallation.GetRegistryNames(majorVersion, minorVersion, out installKeyName, out installValueName, out spKeyName, out spValueName))
{
return(false);
}
RegistryKey installKey = FrameworkRegistryInstallation.GetRegistryKeySubKey(Registry.LocalMachine, installKeyName);
if (installKey == null)
{
return(false);
}
int?installValue = FrameworkRegistryInstallation.GetRegistryKeyValueInt(installKey, installValueName);
if (installValue == null)
{
return(false);
}
// The detection logic for .NET 4.5 is to check for the existence of a DWORD key named Release under HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Full folder in the registry.
// For .NET 4.5, the value of this key is the release number and not 1 (Install = 1 for .NET 3.5, .NET 4.0) . So, we need to bypasss the check below
if ((majorVersion != 4 && minorVersion != 5) && (installValue != 1))
{
Debug.Assert(PSVersionInfo.CLRVersion.Major == 4, "This check is valid only for CLR Version 4.0 and .NET Version 4.5");
return(false);
}
if (minimumSPVersion > 0)
{
RegistryKey spKey = FrameworkRegistryInstallation.GetRegistryKeySubKey(Registry.LocalMachine, spKeyName);
if (spKey == null)
{
return(false);
}
int?spValue = FrameworkRegistryInstallation.GetRegistryKeyValueInt(spKey, spValueName);
if (spValue == null)
{
return(false);
}
if (spValue < minimumSPVersion)
{
return(false);
}
}
return(true);
}
/// <summary>
/// Check if the given version if the framework is installed
/// </summary>
/// <param name="version">version to check.
/// for .NET Framework 3.5 and any service pack this can be new Version(3,5) or new Version(3, 5, 21022, 8).
/// for .NET 3.5 with SP1 this should be new Version(3, 5, 30729, 1).
/// For other versions please check the table at http://support.microsoft.com/kb/318785.
/// </param>
/// <returns></returns>
internal static bool IsFrameworkInstalled(Version version)
{
int minorVersion, majorVersion, minimumSPVersion;
if (!FrameworkRegistryInstallation.CanCheckFrameworkInstallation(
version,
out majorVersion,
out minorVersion,
out minimumSPVersion))
{
return(false);
}
return(IsFrameworkInstalled(majorVersion, minorVersion, minimumSPVersion));
}
