Cを使用してローカルのDropboxファイルの共有URLを取得するには

Question

DropNet APIを使用してローカルファイルの共有リンクを取得していますが、GetAccessToken（）がnullなので通過できません。ここで

は私のコードは、これまでのところです：GetShareで投げ

var _client = new DropNetClient(APIKEY, APISEC); 
_client.GetToken(); 
var url = _client.BuildAuthorizeUrl(); 
Process.Start(url); 
var accessToken = _client.GetAccessToken();      
var shareResponse = _client.GetShare("/Getting Started.rtf"); 
MessageBox.Show(shareResponse.Url); 

は例外（）：

System.Reflection.TargetInvocationException 

それは私がブラウザを起動していますどのようにして何かすることありますが、私がでてきましたこれは何時間も、何か助けてくれてありがとう！

Answer 1

私はついに、Spring.Social（NuGetから）からまともな文書を見つけました。

ここにある：ここにあなたのプログラムにリンクする新しいアプリケーションのための

1. サインアップ：DropBox/Developer/Apps

2. はNuGetパッケージSpring.Social.Dropboxをインストールします。

3. 次の例を使用して接続してください。

   using Spring.Social.Dropbox.Api; 
   using Spring.Social.Dropbox.Connect; 
   using Spring.Social.OAuth1; 
   
   private void ShareViaDropbox(string[,] filesNameLink) 
   { 
       try 
       { 
        if (CheckForInternetConnection()) // cant use dropbox without internet. 
        { 
         string consumerKey = "<get this from dropbox>"; 
         string consumerSecret = "<get this from dropbox>"; 
   
         DropboxServiceProvider dropboxServiceProvider = new DropboxServiceProvider(consumerKey, consumerSecret, AccessLevel.Full); 
         IOAuth1Operations oauthOperations = dropboxServiceProvider.OAuthOperations; 
   
         // I used an xml file to store the key (probably not the most secure later I will write an encryption). 
         string[] storedToken = GetTag("<DropBoxToken>", ",").Split(','); 
         OAuthToken oauthAccessToken = new OAuthToken(storedToken[0], storedToken[1]); 
   
         // testing if we got something from the earlier xml tag. 
         if (oauthAccessToken.Value == string.Empty || oauthAccessToken.Value == "") 
         { 
          Console.Write("Getting request token..."); 
          OAuthToken oauthToken = dropboxServiceProvider.OAuthOperations.FetchRequestTokenAsync(null, null).Result; 
          Console.WriteLine("Done"); 
          OAuth1Parameters parameters = new OAuth1Parameters(); 
          string authenticateUrl = dropboxServiceProvider.OAuthOperations.BuildAuthorizeUrl(oauthToken.Value, parameters); 
   
          Console.WriteLine("Redirect user for authorization"); 
   
          // let the user know they have to sign in and chose the correct dropbox. this is also where most documentation leaves off! 
          MessageBox.Show(
           "This is the first time you have connected to DropBox. A browser will open and direct you the the DropBox authentication page. When you prompted, please sign in and then choose the [named] DropBox." + Environment.NewLine + 
           "Once you have succesfully compleaded the authorization confirmation from DropBox, you may close the browser to continue." + Environment.NewLine + 
           Environment.NewLine + 
           "Click 'Ok' to proceed", "DropBox Authentication Required.", MessageBoxButtons.OK, MessageBoxIcon.Information); 
          Process.Start(authenticateUrl); 
   
          // halt the program until the user has authenticated. 
          MessageBox.Show("Click 'OK' when authorization has succeeded.", "DropBox Authentication - WAIT", MessageBoxButtons.OK, MessageBoxIcon.Stop); 
          Console.Write("Press any key when authorization attempt has succeeded"); 
          Console.Write("Getting access token..."); 
          AuthorizedRequestToken requestToken = new AuthorizedRequestToken(oauthToken, null); 
          oauthAccessToken = dropboxServiceProvider.OAuthOperations.ExchangeForAccessTokenAsync(requestToken, null).Result; 
          Console.WriteLine("Done"); 
          ChangeTag("<DropBoxToken>", oauthAccessToken.Value + "," + oauthAccessToken.Secret); // update the xml file with the token.       
         } 
   
         IDropbox dropbox = dropboxServiceProvider.GetApi(oauthAccessToken.Value, oauthAccessToken.Secret); 
         DropboxLink shareableLink; 
         double filesNameLength = Math.Ceiling(Convert.ToDouble(filesNameLink.Length/2)); 
   
         // remove everything before the users special folder path including the dropbbox folder. 
         // then change all the switches to front from back for the web. 
         for (int i = 0; i < filesNameLength; i++) 
         { 
          filesNameLink[i, 1] = filesNameLink[i, 0]; 
          filesNameLink[i, 0] = Path.GetFileName(filesNameLink[i, 0]); 
          filesNameLink[i, 1] = filesNameLink[i, 1].Replace(dropboxRootDir, "").Replace("\\", "/"); 
          shareableLink = dropbox.GetShareableLinkAsync(filesNameLink[i, 1].Replace("\\", "/")).Result; 
          filesNameLink[i, 1] = shareableLink.Url; 
         } 
         // do something with the link(s). // 
         catch { } 
        } 
       } 
       catch { } 
   }