using Microsoft.Xrm.Sdk;
using Microsoft.Xrm.Tooling.Connector;
using System;
using System.Configuration;
using Microsoft.Xrm.Sdk.Query;
using Microsoft.Xrm.Sdk.Organization;
using System.ServiceModel;
using System.Net;
using Microsoft.Crm.Sdk.Messages;
using System.Collections.Generic;
using System.Data;
using System.Runtime.InteropServices;
using System.Linq;
using Excel = Microsoft.Office.Interop.Excel;
using Microsoft.Xrm.Sdk.Messages;
using Microsoft.SharePoint;
using System.IO;
using Microsoft.IdentityModel.Clients.ActiveDirectory;
using System.Threading.Tasks;
using System.Net.Http;
using System.Text;
using System.Net.Http.Headers;
namespace CustomCode
{
public class AzureRetrieveCall
{
public static void Main(string[] args)
{
//you will get some An unhandled exceptions of type 'System.AggregateException' occurred in mscorlib.dll
//{ "An error occurred while sending the request."}
//Hresult -2146233088
//if you wont specify SecurityProtocol
ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12;
var contacts = CrmRequest(HttpMethod.Get, "https://ORGNAME.api.crm.dynamics.com/api/data/v9.1/contacts")
.Result.Content.ReadAsStringAsync();
// Similarly you can make POST, PATCH & DELETE requests
}
public static async Task<HttpResponseMessage> CrmRequest(HttpMethod httpMethod, string requestUri, string body = null)
{
// Acquiring Access Token
var accessToken = await AccessTokenGenerator();
var client = new HttpClient();
var message = new HttpRequestMessage(httpMethod, requestUri);
// OData related headers
message.Headers.Add("OData-MaxVersion", "4.0");
message.Headers.Add("OData-Version", "4.0");
message.Headers.Add("Prefer", "odata.include-annotations=\"*\"");
// Passing AccessToken in Authentication header
message.Headers.Add("Authorization", $"Bearer {accessToken}");
// Adding body content in HTTP request
if (body != null)
message.Content = new StringContent(body, UnicodeEncoding.UTF8, "application/json");
return await client.SendAsync(message);
}
public static async Task<string> AccessTokenGenerator()
{
string clientId = ""; // Your Azure AD Application ID
string clientSecret = ""; // Client secret generated in your App
string authority = "https://login.microsoftonline.com/APPTENANTID"; // Azure AD App Tenant ID
string resourceUrl = "https://ORGNAME.crm.dynamics.com"; // Your Dynamics 365 Organization URL
var credentials = new ClientCredential(clientId, clientSecret);
var authContext = new Microsoft.IdentityModel.Clients.ActiveDirectory.AuthenticationContext(authority);
var result = await authContext.AcquireTokenAsync(resourceUrl, credentials);
return result.AccessToken;
}
}
}
