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Author's profile photo Jacky Liu

Using C# to call Odata api in S4 HANA CLOUD Method 2

Since currently S4HC odata version is 2.0, I think we can not use odata client generater (it works for Odata v4).

In my previous blog , I blog dow the method of using httprequest to call odata API in S4HANA Cloud and then use XML to extract the data . In this blog , I want to using a more efficient way( WCF ) to call odata api in S4HC . Although some associates have write a blog about this topic. But I want to give a simplist example .

By using WCF Visual studio generate a service class base the metadata file. The following is the steps :

1, Get metadata from postman ,and save the response to xml file .

2 Create a new project in VS :

Create a new project in VS2012

[File] > [New]>[Project]

Or Ctrl+ Shift+N

3 . Add service reference in project :

4. using code to use the service .

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

using System.Net;

using System.Security;

using System.Data.Services.Client;

namespace ConsoleApplication5


class Program


static void Main(string[] args)


BillingService.API_BILLING_DOCUMENT_SRV_Entities context =

new BillingService.API_BILLING_DOCUMENT_SRV_Entities(new Uri(“”));

context.SendingRequest += new EventHandler<System.Data.Services.Client.SendingRequestEventArgs>(OnSendingRequest);

var billings = context.A_BillingDocument.Execute();

foreach (var billing in billings)


Console.WriteLine(billing.AccountingDocument + “|” + billing.BillingDocumentDate + “|” + billing.CompanyCode);



Console.WriteLine(“loop finished”);



private static void OnSendingRequest(object sender, SendingRequestEventArgs e)


string authorization = “UserName” + “:” + “PassWord”;

string base64 = Convert.ToBase64String(Encoding.Default.GetBytes(authorization));

base64 = “Basic ” + base64;

// Add an Authorization header that contains an OAuth WRAP access token to the request.

e.RequestHeaders.Add(“Authorization”, base64);




5, Execute the program .

Best regards!

Jacky Liu

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      Author's profile photo Priyank Kumar Jain
      Priyank Kumar Jain

      Good info, thank you for sharing.

      Author's profile photo Sai Giridhar Kasturi
      Sai Giridhar Kasturi

      thanks for your contribution

      Author's profile photo Luca Izzo
      Luca Izzo

      have you been able to perform also a Patch or Post ?

      It tryed many time but with not success.. Could you help?