Created
May 26, 2016 18:59
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void Main() | |
{ | |
Get45or451FromRegistry(); | |
} | |
private static void Get45or451FromRegistry() | |
{ | |
using (RegistryKey ndpKey = RegistryKey.OpenBaseKey(RegistryHive.LocalMachine, RegistryView.Registry32).OpenSubKey("SOFTWARE\\Microsoft\\NET Framework Setup\\NDP\\v4\\Full\\")) | |
{ | |
if (ndpKey != null && ndpKey.GetValue("Release") != null) | |
{ | |
Console.WriteLine("Version: " + CheckFor45DotVersion((int)ndpKey.GetValue("Release"))); | |
} | |
else | |
{ | |
Console.WriteLine("Version 4.5 or later is not detected."); | |
} | |
} | |
} | |
// 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) | |
{ | |
if (releaseKey >= 393295) | |
{ | |
return "4.6 or later"; | |
} | |
if ((releaseKey >= 379893)) | |
{ | |
return "4.5.2 or later"; | |
} | |
if ((releaseKey >= 378675)) | |
{ | |
return "4.5.1 or later"; | |
} | |
if ((releaseKey >= 378389)) | |
{ | |
return "4.5 or later"; | |
} | |
// This line should never execute. A non-null release key should mean | |
// that 4.5 or later is installed. | |
return "No 4.5 or later version detected"; | |
} |
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