vs2015判断rvt版本详解编程语言

using System; 
using System.Text; 
using System.IO; 
using System.Text.RegularExpressions;
 
namespace ReadRvt 
{ 
    class Program 
    { 
        static void Main(string[] args) 
        { 
            string ss = GetRevitVision("E:/测试项目/mine/xx.rvt"); 
            Console.WriteLine("REVIT文件版本:"+ ss); 
            Console.ReadKey(); 
 
        } 
        public static string GetRevitVision(string path) 
        { 
            string revitVision = null; 
            FileStream stream = new FileStream(path, FileMode.Open); 
            int size = 1024 * 1024; 
            byte[] bytes = new byte[size]; 
            while (stream.Read(bytes, 0, size) > 0) 
            { 
                string str = Encoding.Unicode.GetString(bytes); 
 
                string pattern = @"Autodesk Revit /d{4}"; 
                var match = Regex.Match(str, pattern); 
                if (match.Success) 
                { 
                    revitVision = match.Value.Substring(match.Length - 4, 4); 
                    break; 
                } 
            } 
            return revitVision; 
        } 
    } 
}