Dieser Artikel ist Teil einer Anleitung zum Übertragen von Daten in ein Dataset per Push.

In Schritt 4 von „Übertragen von Daten per Push in ein Dataset“ (Abrufen eines Datasets zum Hinzufügen von Zeilen zu einer Power BI-Tabelle) haben Sie den Vorgang Datasets abrufen und „Newtonsoft.Json“ zum Abrufen einer Dataset-ID verwendet. In diesem Schritt verwenden Sie die Dataset-ID mit dem Vorgang Zeilen hinzufügen, um einem Power BI-Dataset Zeilen hinzuzufügen. Beispiele zum Verwenden der Power BI-REST-API finden Sie unter Power BI-REST-API in APIARY.

Beim Aufruf des Vorgangs Zeilen hinzufügen fügen Sie einem Dataset Zeilen hinzu.

Nachstehend wird das Hinzufügen von Zeilen zu einem Dataset mithilfe der Power BI-API erläutert.

Hinzufügen von Zeilen zu einer Power BI-Tabelle

Hinweis:

Wichtig ist, dass Sie zuvor die vorangegangenen Schritte der exemplarischen Vorgehensweise Übertragen von Daten in ein Dataset per Push ausgeführt haben.

  1. Fügen Sie im Konsolenanwendungsprojekt, das Sie in „Schritt 2: Exemplarische Vorgehensweise zum Übertragen von Daten per Push“ unter Abrufen eines Authentifizierungszugriffstokens erstellt haben, den folgenden Code hinzu.
  2. Führen Sie die Konsolen-App aus, und melden Sie sich bei Ihrem Power BI-Konto an. Daraufhin sollte im Konsolenfenster Zeilen hinzugefügt angezeigt werden. Sie können sich auch bei Power BI anmelden, um die Zeilen anzuzeigen, die dem Dataset hinzugefügt wurden.

Beispiel für das Übertragen von Daten in ein Dataset per Push

Fügen Sie diesen Code der Datei „Program.cs“ hinzu.

  • 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 rows to a Power BI table
       AddRows(datasetId, "Product");
   }     
  • Eine „AddRows()“-Methode hinzu:
    #region Add rows to a Power BI table
    private static void AddRows(string datasetId, string tableName)
    {
        string powerBIApiAddRowsUrl = String.Format("https://api.powerbi.com/v1.0/myorg/datasets/{0}/tables/{1}/rows", datasetId, tableName);

        //POST web request to add rows.
        //To add rows to a dataset in a group, use the Groups uri: https://api.powerbi.com/v1.0/myorg/groups/{group_id}/datasets/{dataset_id}/tables/{table_name}/rows
        //Change request method to "POST"
        HttpWebRequest request = System.Net.WebRequest.Create(powerBIApiAddRowsUrl) 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));

        //JSON content for product row
        string rowsJson = "{\"rows\":" +
            "[{\"ProductID\":1,\"Name\":\"Adjustable Race\",\"Category\":\"Components\",\"IsCompete\":true,\"ManufacturedOn\":\"07/30/2014\"}," +
            "{\"ProductID\":2,\"Name\":\"LL Crankarm\",\"Category\":\"Components\",\"IsCompete\":true,\"ManufacturedOn\":\"07/30/2014\"}," +
            "{\"ProductID\":3,\"Name\":\"HL Mountain Frame - Silver\",\"Category\":\"Bikes\",\"IsCompete\":true,\"ManufacturedOn\":\"07/30/2014\"}]}";

        //POST web request
        byte[] byteArray = System.Text.Encoding.UTF8.GetBytes(rowsJson);
        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("Rows Added");

            Console.ReadLine();
        }
    }

    #endregion

Nachstehend finden Sie die vollständige Codeliste.

Vollständige Codeliste

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();

            //Add rows to a Power BI table
            AddRows(datasetId, "Product");

        }

        #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 a 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

        #region Add rows to a Power BI table
        private static void AddRows(string datasetId, string tableName)
        {
            string powerBIApiAddRowsUrl = String.Format("https://api.powerbi.com/v1.0/myorg/datasets/{0}/tables/{1}/rows", datasetId, tableName);

            //POST web request to add rows.
            //To add rows to a dataset in a group, use the Groups uri: https://api.powerbi.com/v1.0/myorg/groups/{group_id}/datasets/{dataset_id}/tables/{table_name}/rows
            //Change request method to "POST"
            HttpWebRequest request = System.Net.WebRequest.Create(powerBIApiAddRowsUrl) 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));

            //JSON content for product row
            string rowsJson = "{\"rows\":" +
                "[{\"ProductID\":1,\"Name\":\"Adjustable Race\",\"Category\":\"Components\",\"IsCompete\":true,\"ManufacturedOn\":\"07/30/2014\"}," +
                "{\"ProductID\":2,\"Name\":\"LL Crankarm\",\"Category\":\"Components\",\"IsCompete\":true,\"ManufacturedOn\":\"07/30/2014\"}," +
                "{\"ProductID\":3,\"Name\":\"HL Mountain Frame - Silver\",\"Category\":\"Bikes\",\"IsCompete\":true,\"ManufacturedOn\":\"07/30/2014\"}]}";

            //POST web request
            byte[] byteArray = System.Text.Encoding.UTF8.GetBytes(rowsJson);
            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("Rows Added");

                Console.ReadLine();
            }
        }

        #endregion
    }
}

Siehe auch

Add Rows (Zeilen hinzufügen)
Übertragung von Daten in ein Power BI-Dashboard per Push
Übersicht über Power BI-REST-API
Referenz zur Power BI-REST-API
Power BI-REST-API in APIARY
Weitere Fragen? Wenden Sie sich an die Power BI-Community