public static int Compare(NETVersionInfo a, NETVersionInfo b)
{
var ar = a.InstalledVersion.Split('.');
var br = b.InstalledVersion.Split('.');
for (int i = 0, l = Math.Min(ar.Length, br.Length); i < l; i++)
{
int ai;
int bi;
if (!int.TryParse(ar[i], out ai))
{
ai = 0;
}
if (!int.TryParse(br[i], out bi))
{
bi = 0;
}
if (ai != bi)
{
return(bi - ai);
}
}
int d = br.Length - ar.Length;
if (d != 0)
{
return(d);
}
if (b.Type == "Full" && a.Type != "Full")
{
return(1);
}
if (a.Type == "Full" && b.Type != "Full")
{
return(-1);
}
return(0);
}
// The example displays output similar to the following:
// v2.0.50727 2.0.50727.4927 SP2
// v3.0 3.0.30729.4926 SP2
// v3.5 3.5.30729.4926 SP1
// v4.0
// Client 4.0.0.0
public static CLRInfo GetCLRInfo()
{
CLRInfo rv = new CLRInfo();
NETVersionInfo highestInstalledNETVersion = new NETVersionInfo()
{
InstalledVersion = ""
};
RegistryKey baseKey = RegistryKey.OpenBaseKey(RegistryHive.LocalMachine, RegistryView.Registry32);
rv.RawClrVersion = Environment.Version.ToString();
const string subkey = @"SOFTWARE\Microsoft\NET Framework Setup\NDP\";
// Opens the registry key for the .NET Framework entry.
using (var ndpKey = baseKey.OpenSubKey(subkey))
{
foreach (var versionKeyName in ndpKey.GetSubKeyNames())
{
if (versionKeyName.StartsWith("v"))
{
//rv.NETVersionsInstalled.Add(versionKeyName.Substring(1));
using (RegistryKey versionKey = ndpKey.OpenSubKey(versionKeyName))
{
// Get the .NET Framework version value.
var name = (string)versionKey.GetValue("Version", "");
// Get the service pack (SP) number.
var sp = versionKey.GetValue("SP", "").ToString();
var releaseVersion = versionKey.GetValue("Release");
int releaseKey = releaseVersion as int? ?? 0;
// Get the installation flag, or an empty string if there is none.
var install = versionKey.GetValue("Install", "").ToString();
if (string.IsNullOrEmpty(install)) // No install info; it must be in a child subkey.
{
//Console.WriteLine($"{versionKeyName} {name}");
}
else if (install == "1")
{
NETVersionInfo rec = new NETVersionInfo()
{
Version = versionKeyName,
InstalledVersion = name,
ServicePack = sp,
ReleaseKey = releaseKey
};
if (highestInstalledNETVersion < rec)
{
highestInstalledNETVersion = rec;
}
if (!rv.NETVersionsInstalled.Contains(rec))
{
rv.NETVersionsInstalled.Add(rec);
}
}
if (!string.IsNullOrEmpty(name))
{
continue;
}
foreach (var subKeyName in versionKey.GetSubKeyNames())
{
using (RegistryKey subKey = versionKey.OpenSubKey(subKeyName))
{
name = (string)subKey.GetValue("Version", "");
if (!string.IsNullOrEmpty(name))
{
sp = subKey.GetValue("SP", "").ToString();
releaseVersion = subKey.GetValue("Release");
releaseKey = releaseVersion as int? ?? 0;
string v = versionKeyName;
if (releaseKey > 0)
{
v = CheckFor45PlusVersion(releaseKey);
}
install = subKey.GetValue("Install", "").ToString();
if (install == "1")
{
if (versionKeyName == "v4")
{
rv.NET4TypesInstalled.Add(subKeyName);
if (subKeyName == "Client")
{
rv.IsNET4ClientInstalled = true;
}
if (subKeyName == "Full")
{
rv.IsNET4FullInstalled = true;
}
}
NETVersionInfo rec = new NETVersionInfo()
{
Version = v,
Type = subKeyName,
InstalledVersion = name,
ServicePack = sp,
ReleaseKey = releaseKey
};
if (highestInstalledNETVersion < rec)
{
highestInstalledNETVersion = rec;
}
if (!rv.NETVersionsInstalled.Contains(rec))
{
rv.NETVersionsInstalled.Add(rec);
}
}
}
}
}
}
}
}
}
if (String.IsNullOrEmpty(highestInstalledNETVersion.InstalledVersion))
{
rv.Version = null;
}
else
{
rv.Version = highestInstalledNETVersion;
}
return(rv);
}
