giansalex

var registry = Microsoft.Win32.Registry.ClassesRoot;
var subKeyNames = registry.GetSubKeyNames();
var regex = new System.Text.RegularExpressions.Regex(@"^VisualStudio\.edmx\.(\d+)\.(\d+)$");
foreach (var subKeyName in subKeyNames)
{
    var match = regex.Match(subKeyName);
    if (match.Success)
        Console.WriteLine("V" + match.Groups[1].Value + "." + match.Groups[2].Value);
}