VB.net detect version of .NET Framework 4

VB.net detect version of .NET Framework 4

        Dim dotnetversion As String
        Dim regVersion As Microsoft.Win32.RegistryKey
        Dim keyvalue = "SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Full\"
        regVersion = Microsoft.Win32.Registry.LocalMachine.OpenSubKey(keyvalue, False)
        dotnetversion = regVersion.GetValue("Release", 0)
        txtDotNet.Text = dotnetversion
        If dotnetversion = "378389" Then
            txtDotNet.Text = "4.5.0"
        ElseIf dotnetversion = "378758" Then
            txtDotNet.Text = "4.5.1 win8,7sp1,vistasp2"
        ElseIf dotnetversion = "378675" Then
            txtDotNet.Text = "4.5.1 win8.1"
        ElseIf dotnetversion = "379893" Then
            txtDotNet.Text = "4.5.2"
        End If
        regVersion.Close()