How to reliably detect the actual .NET 4.5 version installed?
If someone needs the System.Environment.Version value against the .net version, arranged in a table (need to perform =Vlookup with excel etc...)
here is a plunker I have created for that.
enter the link above and you will be able to copy the this table image:
MS recently patched .NET 4.5 to restore backwards compatibility with .NET 4.0 in some scenarios (see http://blogs.msdn.com/b/dotnet/archive/2012/10/17/net-framework-4-5-off-to-a-great-start.aspx).
It's possible that MS updated the setup with these changes (so that users upgrading to .NET 4.5 don't run into compat trouble), though I don't know why they wouldn't change the version number on the setup.
Also, note that there's a difference between the .NET version number and the runtime version number as reported by System.Environment.Version. The latter still is 4.0.30319.* for .NET 4.5, only the revision number changes (with the .NET 4.5 update, and also with every security update).
Here are some examples of runtime versions observed in the wild:
Base 4.0
- 4.0.30319.1 = .NET 4.0 RTM
- 4.0.30319.269 = .NET 4.0 on Windows XP SP3, 7, 7 SP1 (with MS12-035 GDR security update)
- 4.0.30319.276 = .NET 4.0 on Windows XP SP3 (4.0.3 Runtime update)
- 4.0.30319.296 = .NET 4.0 on Windows XP SP3, 7 (with MS12-074 GDR security update)
- 4.0.30319.544 = .NET 4.0 on Windows XP SP3, 7, 7 SP1 (with MS12-035 LDR security update)
- 4.0.30319.1008 = .NET 4.0 on Windows XP SP3, 7, 7 SP1 (with MS13-052 GDR security update)
- 4.0.30319.1022 = .NET 4.0 on Windows XP SP3, 7, 7 SP1 (with MS14-009 GDR security update)
- 4.0.30319.1026 = .NET 4.0 on Windows XP SP3, 7, 7 SP1 (with MS14-057 GDR security update)
- 4.0.30319.2034 = .NET 4.0 on Windows XP SP3, 7, 7 SP1 (with MS14-009 LDR security update)
4.5
- 4.0.30319.17626 = .NET 4.5 RC
- 4.0.30319.17929 = .NET 4.5 RTM
- 4.0.30319.18010 = .NET 4.5 on Windows 8
- 4.0.30319.18052 = .NET 4.5 on Windows 7 SP1 64-bit
- 4.0.30319.18063 = .NET 4.5 on Windows 7 SP1 64-bit (with MS14-009 security update)
4.5.1
- 4.0.30319.18408 = .NET 4.5.1 on Windows 7 SP1 64-bit
- 4.0.30319.18444 = .NET 4.5.1 on Windows 7 SP1 64-bit (with MS14-009 security update)
- 4.0.30319.34014 = .NET 4.5.1 on Windows 8.1 64-bit
4.5.2
- 4.0.30319.34209 = .NET 4.5.2 on Windows 7 SP1 64-bit
- 4.0.30319.34209 = .NET 4.5.2 on Windows 8.1 64-bit
4.6 and later
- 4.0.30319.42000
I don't see any .NET updates in my Windows Update history, so I guess the update to v18010 got installed as part of KB 2756872.
Update: apparently Microsoft updated the .NET 4.5 setup due a mistake with the digital signatures in the original download. KB 2770445.
public class DA {
public static class VersionNetFramework {
public static string Get45or451FromRegistry()
{//https://msdn.microsoft.com/en-us/library/hh925568(v=vs.110).aspx
using (RegistryKey ndpKey = RegistryKey.OpenBaseKey(RegistryHive.LocalMachine, RegistryView.Registry32).OpenSubKey("SOFTWARE\\Microsoft\\NET Framework Setup\\NDP\\v4\\Full\\"))
{
int releaseKey = Convert.ToInt32(ndpKey.GetValue("Release"));
if (true)
{
return (@"Version: " + CheckFor45DotVersion(releaseKey));
}
}
}
// Checking the version using >= will enable forward compatibility,
// however you should always compile your code on newer versions of
// the framework to ensure your app works the same.
private static string CheckFor45DotVersion(int releaseKey)
{//https://msdn.microsoft.com/en-us/library/hh925568(v=vs.110).aspx
if (releaseKey >= 394271)
return "4.6.1 installed on all other Windows OS versions or later";
if (releaseKey >= 394254)
return "4.6.1 installed on Windows 10 or later";
if (releaseKey >= 393297)
return "4.6 installed on all other Windows OS versions or later";
if (releaseKey >= 393295)
return "4.6 installed with Windows 10 or later";
if (releaseKey >= 379893)
return "4.5.2 or later";
if (releaseKey >= 378758)
return "4.5.1 installed on Windows 8, Windows 7 SP1, or Windows Vista SP2 or later";
if (releaseKey >= 378675)
return "4.5.1 installed with Windows 8.1 or later";
if (releaseKey >= 378389)
return "4.5 or later";
return "No 4.5 or later version detected";
}
public static string GetVersionFromRegistry()
{//https://msdn.microsoft.com/en-us/library/hh925568(v=vs.110).aspx
string res = @"";
// Opens the registry key for the .NET Framework entry.
using (RegistryKey ndpKey =
RegistryKey.OpenRemoteBaseKey(RegistryHive.LocalMachine, "").
OpenSubKey(@"SOFTWARE\Microsoft\NET Framework Setup\NDP\"))
{
// As an alternative, if you know the computers you will query are running .NET Framework 4.5
// or later, you can use:
// using (RegistryKey ndpKey = RegistryKey.OpenBaseKey(RegistryHive.LocalMachine,
// RegistryView.Registry32).OpenSubKey(@"SOFTWARE\Microsoft\NET Framework Setup\NDP\"))
foreach (string versionKeyName in ndpKey.GetSubKeyNames())
{
if (versionKeyName.StartsWith("v"))
{
RegistryKey versionKey = ndpKey.OpenSubKey(versionKeyName);
string name = (string)versionKey.GetValue("Version", "");
string sp = versionKey.GetValue("SP", "").ToString();
string install = versionKey.GetValue("Install", "").ToString();
if (install == "") //no install info, must be later.
res += (versionKeyName + " " + name) + Environment.NewLine;
else
{
if (sp != "" && install == "1")
{
res += (versionKeyName + " " + name + " SP" + sp) + Environment.NewLine;
}
}
if (name != "")
{
continue;
}
foreach (string subKeyName in versionKey.GetSubKeyNames())
{
RegistryKey subKey = versionKey.OpenSubKey(subKeyName);
name = (string)subKey.GetValue("Version", "");
if (name != "")
sp = subKey.GetValue("SP", "").ToString();
install = subKey.GetValue("Install", "").ToString();
if (install == "") //no install info, must be later.
res += (versionKeyName + " " + name) + Environment.NewLine;
else
{
if (sp != "" && install == "1")
{
res += (" " + subKeyName + " " + name + " SP" + sp) + Environment.NewLine;
}
else if (install == "1")
{
res += (" " + subKeyName + " " + name) + Environment.NewLine;
}
}
}
}
}
}
return res;
}
public static string GetUpdateHistory()
{//https://msdn.microsoft.com/en-us/library/hh925567(v=vs.110).aspx
string res=@"";
using (RegistryKey baseKey = RegistryKey.OpenBaseKey(RegistryHive.LocalMachine, RegistryView.Registry32).OpenSubKey(@"SOFTWARE\Microsoft\Updates"))
{
foreach (string baseKeyName in baseKey.GetSubKeyNames())
{
if (baseKeyName.Contains(".NET Framework") || baseKeyName.StartsWith("KB") || baseKeyName.Contains(".NETFramework"))
{
using (RegistryKey updateKey = baseKey.OpenSubKey(baseKeyName))
{
string name = (string)updateKey.GetValue("PackageName", "");
res += baseKeyName + " " + name + Environment.NewLine;
foreach (string kbKeyName in updateKey.GetSubKeyNames())
{
using (RegistryKey kbKey = updateKey.OpenSubKey(kbKeyName))
{
name = (string)kbKey.GetValue("PackageName", "");
res += (" " + kbKeyName + " " + name) + Environment.NewLine;
if (kbKey.SubKeyCount > 0)
{
foreach (string sbKeyName in kbKey.GetSubKeyNames())
{
using (RegistryKey sbSubKey = kbKey.OpenSubKey(sbKeyName))
{
name = (string)sbSubKey.GetValue("PackageName", "");
if (name == "")
name = (string)sbSubKey.GetValue("Description", "");
res += (" " + sbKeyName + " " + name) + Environment.NewLine;
}
}
}
}
}
}
}
}
}
return res;
}
}
}