Question

我想要的是“which”命令：提供文件名（exe，bat ...）并返回该文件的完整路径：

哪个java.exe
C：\ Windows \ System32下\ java.exe的

代码如下：

string fileName = "java.exe"
string fullPath = PathResolver.Resolve(fileName);

我们在.NET框架中有这样的功能吗？

感谢。

更新
最后，我自己写了一篇：

  // Reoslve the full path of a file name
    // fileName: of absolute path or relative path; with ext or without ext
    static string ResolvePath(string fileName)
    {
        // 0. absolute path
        string[] stdExts = { ".bat", ".cmd", ".pl", ".exe" };
        if (Path.IsPathRooted(fileName))
        {
            if (File.Exists(fileName))
            {
                return fileName;
            }
            else
            {
                foreach (string eachExt in stdExts)
                {
                    string fullPath = fileName + eachExt;
                    if (File.Exists(fullPath))
                    {
                        return fullPath;
                    }
                }
            }

            return "";
        }

        // 1. candidate extensions
        string fileNameNoExt = Path.GetFileNameWithoutExtension(fileName);
        string ext = Path.GetExtension(fileName);
        string[] candidateExts;
        if (string.IsNullOrEmpty(ext))
        {
            candidateExts = stdExts;
        }
        else
        {
            string[] exts = { ext };
            candidateExts = exts;
        }

        // 2. candidate path:
        //      http://msdn.microsoft.com/en-us/library/windows/desktop/ms682586(v=vs.85).aspx#search_order_for_desktop_applications
        List<string> candidatePaths = new List<string>();

        // application dir
        string fileApp = Process.GetCurrentProcess().MainModule.FileName;
        candidatePaths.Add(Path.GetDirectoryName(fileApp));

        // current dir
        candidatePaths.Add(Directory.GetCurrentDirectory());

        // system dir
        candidatePaths.Add(Environment.SystemDirectory);

        // windows dir
        string winDir = Environment.GetEnvironmentVariable("windir");
        candidatePaths.Add(winDir);

        // PATH
        string[] paths = Environment.GetEnvironmentVariable("PATH").Split(';');
        foreach (string path in paths)
        {
            // strip the trailing '\'
            candidatePaths.Add(Path.GetDirectoryName(path));
        }

        // 3. resolve
        foreach (string eachPath in candidatePaths)
        {
            foreach (string eachExt in candidateExts)
            {
                string fullPath = eachPath + "\\" + fileNameNoExt + eachExt;
                if (File.Exists(fullPath))
                    return fullPath;
            }
        }

        return "";
    }

Answer 1

我不知道这是否可以帮到你：

    public string PathResolver(string filename)
    {
        string[] paths = Environment.GetEnvironmentVariable("PATH").Split(';');
        foreach (string path in paths)
        {
            string fname = Path.Combine(path, filename);
            if (File.Exists(filename)) return fname;
        }
        return "";
    }

Answer 2

你应该看看这个在NDepend和其他项目中使用的免费库，

http://filedirectorypath.codeplex.com/

Answer 3

我不确定＆＃34;哪个＆＃34;命令，但.net有 Type.GetTypeFromProgID("java.exe") http://msdn.microsoft.com/en-us/library/system.type.gettypefromprogid.aspx

我不确定从哪里开始，但也许有帮助...

Answer 4

查看FileInfo类的FullName property。

FileInfo fi = new FileInfo("foo.exe");
string fullanme = fi.FullName;

Answer 5

我可以建议一种方法来查找可执行文件的完整路径，只需使用文件名实际运行它（可能不是你想要的）：

Process p = new Process();
p.StartInfo = new ProcessStartInfo("notepad.exe");
p.Start();
Console.WriteLine(p.MainModule.FileName);

.NET中的路径解析器

5 个答案: