Azure Active Directory

Acquire-Token.cs

public static void GetAuthorizationToken()
{
    ClientCredential cc = new ClientCredential(AzureDetails.ClientID, AzureDetails.ClientSecret);
    var context = new AuthenticationContext("https://login.microsoftonline.com/" + AzureDetails.TenantID);
    var result = context.AcquireTokenAsync("https://management.azure.com/", cc);
    if (result == null)
    {
        throw new InvalidOperationException("Failed to obtain the Access token");
    }
    AzureDetails.AccessToken = result.Result.AccessToken;
}

Call-Azure-API.cs

public static async Task getAllResourceGroupDetails()
{
    HttpClient client = new HttpClient();
    client.BaseAddress = new Uri("https://management.azure.com/subscriptions/" + AzureDetails.SubscriptionID + "/resourcegroups?api-version=2019-10-01");
    client.DefaultRequestHeaders.Accept.Clear();

    client.DefaultRequestHeaders.Add("Authorization", "Bearer " + AzureDetails.AccessToken);

    HttpRequestMessage request = new HttpRequestMessage(HttpMethod.Get, client.BaseAddress);

    var response = await MakeRequestAsync(request, client);
    AzureDetails.Response = response;
}

public static async Task createResourceGroup()
{
    HttpClient client = new HttpClient();
    client.BaseAddress = new Uri("https://management.azure.com/subscriptions/" + AzureDetails.SubscriptionID + "/resourcegroups/" + AzureDetails.ResourceGroupName + "?api-version=2019-10-01");
    client.DefaultRequestHeaders.Accept.Clear();
    client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
    client.DefaultRequestHeaders.Add("Authorization", "Bearer " + AzureDetails.AccessToken);

    HttpRequestMessage request = new HttpRequestMessage(HttpMethod.Put, client.BaseAddress);
    var body = $"{{\"location\": \"{AzureDetails.Location}\"}}";
    var content = new StringContent(body, Encoding.UTF8, "application/json");
    request.Content = content;
    var response = await MakeRequestAsync(request, client);
    AzureDetails.Response = response;
}

public static async Task<string> MakeRequestAsync(HttpRequestMessage getRequest, HttpClient client)
{
    var response = await client.SendAsync(getRequest).ConfigureAwait(false);
    var responseString = string.Empty;
    try
    {
        response.EnsureSuccessStatusCode();
        responseString = await response.Content.ReadAsStringAsync().ConfigureAwait(false);
    }
    catch (HttpRequestException)
    {

    }

    return responseString;
}