Check which .NET Framework version is installed from command line

Fenil Desai

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1 Nov 2012CPOL

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Check which .NET Framework version is installed from command line

Introduction

This article will help you to know which .NET Framework version is installed from command line.

Check which .NET Framework version is installed from command line

dir %WINDIR%\Microsoft.Net\Framework\v*

dir %WINDIR%\Microsoft.Net\Framework\v* /O:-N /B

License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Written By

Fenil Desai

Software Developer (Senior)

India

IT Analyst/ Senior Software Engineer with 4+ years of experience in MS.NET Technologies

Comments and Discussions

Here is class that I found on the web that I run from a console app. I don't remember exactly where I found it or I would give credit to the original author. The results are shown below after the class.

class CDotNetVersion
{
    public List<string> versionList { get; set; }
    public CDotNetVersion()
    {
        versionList = new List<string>();
    }
    public void GetVersion()
    {
        versionList = new List<string>();
        using (var ndpKey = Registry.LocalMachine.OpenSubKey(@"SOFTWARE\Microsoft\NET Framework Setup\NDP"))
        {
            Action<RegistryKey, Action<RegistryKey, string>> processKids = (node, action) =>
            {
                foreach (var childname in node.GetSubKeyNames())
                    using (var child = node.OpenSubKey(childname))
                        action(child, childname);
            };
            Action<RegistryKey, Func<RegistryKey, bool>> visitDescendants = null;
            visitDescendants = (regkey, isDone) =>
            {
                if (!isDone(regkey))
                    processKids(regkey, (subkey, subkeyname) => visitDescendants(subkey, isDone));
            };
            processKids(ndpKey, (versionKey, versionKeyName) =>
            {
                if (Regex.IsMatch(versionKeyName, @"^v\d"))
                {
                    visitDescendants(versionKey, key =>
                    {
                        bool isInstallationNode = Equals(key.GetValue("Install"), 1) && key.GetValue("Version") != null;
                        if (isInstallationNode)
                            versionList.Add(
                                key.Name.Substring(ndpKey.Name.Length + 1)
                                + (key.GetValue("SP") != null ? ", service pack " + key.GetValue("SP") : "")
                                + " (" + key.GetValue("Version") + ") "
                            );
                        return isInstallationNode;
                    });
                }
            });
        }
    }
}

The results...

.Net Framework Version: v2.0.50727, service pack 2 (2.0.50727.5420) 
.Net Framework Version: v3.0, service pack 2 (3.0.30729.5420) 
.Net Framework Version: v3.5, service pack 1 (3.5.30729.5420) 
.Net Framework Version: v4\Client (4.5.50709) 
.Net Framework Version: v4\Full (4.5.50709) 
.Net Framework Version: v4.0\Client (4.0.0.0)

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