做項目時發現Path.Combine方法只能支持傻瓜式的目錄拼接

輸出結果為：

發現并沒有按照想像的分辨出相對路徑和絕對路徑，所以只好用正則匹配了相對路徑進行重新拼接，以下方法只支持絕對路徑+相對路徑的方式

//絕對路徑
string absolutePath = @"C:/Program Files/Internet Explorer";
//相對路徑
string relativePath = @"../TestPath/";
//預計拼接結果
string splicingResult = string.Empty;
Console.WriteLine(string.Format("Path.Combine(/"{0}/",/"{1}/")=/"{2}/"", absolutePath, relativePath, Path.Combine(absolutePath, relativePath)));
if (!Path.IsPathRooted(relativePath))
{
    //匹配相對路徑，匹配需要向上推的目錄層數
    Regex regex = new Regex(@"^//|([..]+)");
    int backUp = regex.Matches(relativePath).Count;
    List<string> pathes = absolutePath.Split("http://".ToCharArray()).ToList();
    pathes.RemoveRange(pathes.Count - backUp, backUp);
    //匹配文件名，匹配需要附加的目錄層數
    regex = new Regex(@"^//|([a-zA-Z0-9]+)");
    MatchCollection matches = regex.Matches(relativePath);
    foreach (Match match in matches)
    {
        pathes.Add(match.Value);
    }
    //驅動器地址取絕對路徑中的驅動器地址
    pathes[0] = Path.GetPathRoot(absolutePath);
    foreach (string p in pathes)
    {
        splicingResult = Path.Combine(splicingResult, p);
    }
}
Console.WriteLine(string.Format("Absolute Path={0}",absolutePath));
Console.WriteLine(string.Format("Relative Path={0}", relativePath));
Console.WriteLine(string.Format("Path.Combine(/"{0}/",/"{1}/")=/"{2}/"", absolutePath, relativePath, splicingResult));
Console.ReadLine();

輸出結果：