Read Custom variable's data using google analytics api c# -

i'm trying use google analytics api c# retrieve custom varaibles's google analytics. try http://www.c-sharpcorner.com/uploadfile/f9f215/how-to-fetch-google-analytics-statistics-and-display-it-in-y , can read custom dimension data, want read custom variable's data, return null. code given below :

  // path of .p12 file   string keyfilepath = system.web.httpcontext.current.server.mappath("path/of/my/.p12");   string serviceaccountemail = "xxx-xxxxx@developer.gserviceaccount.com";   string websitecode = "xxxxxxxxx";     string keypassword = "notasecret";    analyticsservice service = null;     var scopes =           new string[] {                   analyticsservice.scope.analytics,              // view , manage analytics data                  analyticsservice.scope.analyticsedit,          // edit management actives                  analyticsservice.scope.analyticsmanageusers,   // manage users                  analyticsservice.scope.analyticsreadonly};     // view analytics data         var credential = new serviceaccountcredential(new serviceaccountcredential.initializer(serviceaccountemail)         {             scopes = scopes         }.fromcertificate(certificate));   service = new analyticsservice(new baseclientservice.initializer()         {             httpclientinitializer = credential         });  dataresource.garesource.getrequest request = service.data.ga.get(            "ga:" + websitecode,            datetime.today.adddays(-15).tostring("yyyy-mm-dd"),            datetime.today.tostring("yyyy-mm-dd"),            "ga:sessions,ga:users");       request.dimensions = "ga:dimension1";      // possible add custom variable here      // return exception bcz no such dimension named: "customvar1"      // request.dimensions = "ga:customvar1";        var data = request.execute();      // data.row null 

thanks in advance.

in request.dimensions = "ga:dimension1"; use dimentoin, not custom variable. change line following code

request.dimensions = "ga:customvarname1"; // or can use request.dimensions = "ga:customvarvalue1"; 

for more custom variable read google custom variable reference , retrieve custom variable read https://developers.google.com/analytics/devguides/reporting/core/dimsmets#view=detail&group=custom_variables_or_columns, hope problem solved.