如何使用DirectoryInfo从C＃中的服务器读取Word文件

Question

How to get a Word file from server in C#? I use following code:

   static void Main(string[] args)
    {
        Word._Application application = new Word.Application();
        object fileformat = Word.WdSaveFormat.wdFormatXMLDocument;
     //  
        DirectoryInfo directory = new DirectoryInfo(@"http://www.sample.com/image/");
        foreach (FileInfo file in directory.GetFiles("*.doc", SearchOption.AllDirectories))
        {
            if (file.Extension.ToLower() == ".doc")
            {
                object filename = file.FullName;
                object newfilename = file.FullName.ToLower().Replace(".doc", ".docx");
                Word._Document document = application.Documents.Open(filename);

                document.Convert();
                document.SaveAs(newfilename, fileformat);
                document.Close();
                document = null;
            } 
        }
        application.Quit();
        application = null;
    }

but when I use this code to get file from local machine or desktop then work fine.

Please tell me.

Answer 1

You can't use DirectoryInfo with a URL.

By design, this class only takes a local (or mapped network) path in its constructor.

You need to use System.Net.HttpWebRequest class to get the file from a URL, since it's located on a server on the internet, the only way to retrieve the file is to download it via HTTP .

Edit:

Based on your comments, you are looking to process 1 million files on a server you have access to. There are many ways to handle this.

You can use a network path to the server, such as

var di = new DirectoryInfo("\\servername\path\filename.doc")

You can just use a local path and create your application as a C# Console Application and use a local path. This is what I call a utility. It would be the faster method since it will process everything locally, and avoid network traffic.

var di = new DirectoryInfo("c:\your-folder\your-doc-file.doc")

Since you would run the C# console app directly on the server, the above would work.

Answer 2

DirectoryInfo is just an object that contains information about a directory entry in your file system. It doesn't download a file, which I presume is what you want to do.

The code example at http://msdn.microsoft.com/en-us/library/system.net.httpwebrequest.connection(v=vs.110).aspx is, I think, similar to what you want.

Answer 3

DirectoryInfo is for accessing local files or UNC paths. You cannot use it to access a http addressed page. You first need to download the file, ie using HttpWebRequest.