Step 4: Get a dataset to add rows into a Power BI table

This article is part of a step-by-step walkthrough to push data into a dataset.

In step 3 of Push data into a dataset, Create a dataset in Power BI, you called the Create Dataset operation to create a dataset in Power BI. In this step, you use the Get Datasets operation and Newtonsoft.Json to get a dataset id. You use the dataset id in step 4 to add rows to a dataset.

To push data into a Power BI dataset, you need to reference the table in the dataset. To reference a table in a dataset, you first need to get a Dataset ID. You get a Dataset ID using the Get Dataset By ID operation. The Get Dataset By ID operation returns a JSON string containing a list of all datasets in Power BI. The recommended way to deserialize a JSON string is with Newtonsoft.Json.

Here's how you get a dataset.

Get a Power BI dataset

NOTE: Before you get started, make sure you have followed the previous steps in the push data into a dataset walkthrough.

  1. In the Console Application project you created in Step 2: Walkthrough to push data, Get an authentication access token, install the Newtonsoft.Json NuGet package. Here's how to install the package:

    a. In Visual Studio 2015, choose Tools > NuGet Package Manager > Package Manager Console.

    b. In Package Manager Console, enter Install-Package Newtonsoft.Json.

  2. After the package is installed, add using Newtonsoft.Json; to Program.cs.
  3. In Program.cs, add the code below to get a Dataset ID.
  4. Run the Console App, and login to your Power BI account. You should see Dataset ID: followed by an id in the Console Window.

Sample get a dataset

Add this code into Program.cs.

  • In static void Main(string[] args):

    static void Main(string[] args)
    {
    
      //Get an authentication access token
      token = GetToken();
    
      //Create a dataset in Power BI
      CreateDataset();
    
      //Get a dataset to add rows into a Power BI table
      string datasetId = GetDataset();
    }
    
  • Add a GetDatset() method:

      #region Get a dataset to add rows into a Power BI table
      private static string GetDataset()
      {
          string powerBIDatasetsApiUrl = "https://api.powerbi.com/v1.0/myorg/datasets";
          //POST web request to create a dataset.
          //To create a Dataset in a group, use the Groups uri: https://api.PowerBI.com/v1.0/myorg/groups/{group_id}/datasets
          HttpWebRequest request = System.Net.WebRequest.Create(powerBIDatasetsApiUrl) as System.Net.HttpWebRequest;
          request.KeepAlive = true;
          request.Method = "GET";
          request.ContentLength = 0;
          request.ContentType = "application/json";
    
          //Add token to the request header
          request.Headers.Add("Authorization", String.Format("Bearer {0}", token));
    
          string datasetId = string.Empty;
          //Get HttpWebResponse from GET request
          using (HttpWebResponse httpResponse = request.GetResponse() as System.Net.HttpWebResponse)
          {
              //Get StreamReader that holds the response stream
              using (StreamReader reader = new System.IO.StreamReader(httpResponse.GetResponseStream()))
              {
                  string responseContent = reader.ReadToEnd();
    
                  //TODO: Install NuGet Newtonsoft.Json package: Install-Package Newtonsoft.Json
                  //and add using Newtonsoft.Json
                  var results = JsonConvert.DeserializeObject<dynamic>(responseContent);
    
                  //Get the first id
                  datasetId = results["value"][0]["id"];
    
                  Console.WriteLine(String.Format("Dataset ID: {0}", datasetId));
                  Console.ReadLine();
    
                  return datasetId;
              }
          }
      }
      #endregion
    

The next step shows you how to add rows to a Power BI table.

Below is the complete code listing.

Complete code listing

using System;
using Microsoft.IdentityModel.Clients.ActiveDirectory;
using System.Net;
using System.IO;
using Newtonsoft.Json;

namespace walkthrough_push_data
{
    class Program
    {
        private static string token = string.Empty;

        static void Main(string[] args)
        {

            //Get an authentication access token
            token = GetToken();

            //Create a dataset in Power BI
            CreateDataset();

            //Get a dataset to add rows into a Power BI table
            string datasetId = GetDataset();

        }

        #region Get an authentication access token
        private static string GetToken()
        {
            // TODO: Install-Package Microsoft.IdentityModel.Clients.ActiveDirectory -Version 2.21.301221612
            // and add using Microsoft.IdentityModel.Clients.ActiveDirectory

            //The client id that Azure AD created when you registered your client app.
            string clientID = "{Client_ID}";

            //RedirectUri you used when you register your app.
            //For a client app, a redirect uri gives Azure AD more details on the application that it will authenticate.
            // You can use this redirect uri for your client app
            string redirectUri = "https://login.live.com/oauth20_desktop.srf";

            //Resource Uri for Power BI API
            string resourceUri = "https://analysis.windows.net/powerbi/api";

            //OAuth2 authority Uri
            string authorityUri = "https://login.windows.net/common/oauth2/authorize";

            //Get access token:
            // To call a Power BI REST operation, create an instance of AuthenticationContext and call AcquireToken
            // AuthenticationContext is part of the Active Directory Authentication Library NuGet package
            // To install the Active Directory Authentication Library NuGet package in Visual Studio,
            //  run "Install-Package Microsoft.IdentityModel.Clients.ActiveDirectory" from the nuget Package Manager Console.

            // AcquireToken will acquire an Azure access token
            // Call AcquireToken to get an Azure token from Azure Active Directory token issuance endpoint
            AuthenticationContext authContext = new AuthenticationContext(authorityUri);
            string token = authContext.AcquireToken(resourceUri, clientID, new Uri(redirectUri)).AccessToken;

            Console.WriteLine(token);
            Console.ReadLine();

            return token;
        }

        #endregion

        #region Create a dataset in Power BI
        private static void CreateDataset()
        {
            //TODO: Add using System.Net and using System.IO

            string powerBIDatasetsApiUrl = "https://api.powerbi.com/v1.0/myorg/datasets";
            //POST web request to create a dataset.
            //To create a Dataset in a group, use the Groups uri: https://api.PowerBI.com/v1.0/myorg/groups/{group_id}/datasets
            HttpWebRequest request = System.Net.WebRequest.Create(powerBIDatasetsApiUrl) as System.Net.HttpWebRequest;
            request.KeepAlive = true;
            request.Method = "POST";
            request.ContentLength = 0;
            request.ContentType = "application/json";

            //Add token to the request header
            request.Headers.Add("Authorization", String.Format("Bearer {0}", token));

            //Create dataset JSON for POST request
            string datasetJson = "{\"name\": \"SalesMarketing\", \"tables\": " +
                "[{\"name\": \"Product\", \"columns\": " +
                "[{ \"name\": \"ProductID\", \"dataType\": \"Int64\"}, " +
                "{ \"name\": \"Name\", \"dataType\": \"string\"}, " +
                "{ \"name\": \"Category\", \"dataType\": \"string\"}," +
                "{ \"name\": \"IsCompete\", \"dataType\": \"bool\"}," +
                "{ \"name\": \"ManufacturedOn\", \"dataType\": \"DateTime\"}" +
                "]}]}";

            //POST web request
            byte[] byteArray = System.Text.Encoding.UTF8.GetBytes(datasetJson);
            request.ContentLength = byteArray.Length;

            //Write JSON byte[] into a Stream
            using (Stream writer = request.GetRequestStream())
            {
                writer.Write(byteArray, 0, byteArray.Length);

                var response = (HttpWebResponse)request.GetResponse();

                Console.WriteLine(string.Format("Dataset {0}", response.StatusCode.ToString()));

                Console.ReadLine();
            }
        }
        #endregion

        #region Get a dataset to add rows into a Power BI table
        private static string GetDataset()
        {
            string powerBIDatasetsApiUrl = "https://api.powerbi.com/v1.0/myorg/datasets";
            //POST web request to create a dataset.
            //To create a Dataset in a group, use the Groups uri: https://api.PowerBI.com/v1.0/myorg/groups/{group_id}/datasets
            HttpWebRequest request = System.Net.WebRequest.Create(powerBIDatasetsApiUrl) as System.Net.HttpWebRequest;
            request.KeepAlive = true;
            request.Method = "GET";
            request.ContentLength = 0;
            request.ContentType = "application/json";

            //Add token to the request header
            request.Headers.Add("Authorization", String.Format("Bearer {0}", token));

            string datasetId = string.Empty;
            //Get HttpWebResponse from GET request
            using (HttpWebResponse httpResponse = request.GetResponse() as System.Net.HttpWebResponse)
            {
                //Get StreamReader that holds the response stream
                using (StreamReader reader = new System.IO.StreamReader(httpResponse.GetResponseStream()))
                {
                    string responseContent = reader.ReadToEnd();

                    //TODO: Install NuGet Newtonsoft.Json package: Install-Package Newtonsoft.Json
                    //and add using Newtonsoft.Json
                    var results = JsonConvert.DeserializeObject<dynamic>(responseContent);

                    //Get the first id
                    datasetId = results["value"][0]["id"];

                    Console.WriteLine(String.Format("Dataset ID: {0}", datasetId));
                    Console.ReadLine();

                    return datasetId;
                }
            }
        }
        #endregion
    }
}

Next Step >

Next steps

Add rows to a Power BI table
Newtonsoft.Json
Get Datasets
Push data into Power BI
Overview of Power BI REST API
Power BI REST API reference

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