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Dynamics 365 Community / Forums / Customer experience | Sales, Customer Insights,... / CrmServiceClient is nu...
Customer experience | Sales, Customer Insights,...
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CrmServiceClient is null Value

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Posted on by Community Member Microsoft Employee

Hi

Connections using CrmServiceClient sometimes result in null values.

It happens intermittently if you use it continuously, and most of the time, it seems that the connection is not made once an hour.

<add name="ConnectionString"
connectionString="AuthType=ClientSecret; url={myorg}.crm5.dynamics.com; clientid={clientid}; clientsecret={mysecret};"/>

private static IOrganizationService service;

private string _conStr = ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString;

public IOrganizationService CreateOrganizationWebProxyClient()
{
    CrmServiceClient client;
    client = new CrmServiceClient(_conStr);

    service = (IOrganizationService)client.OrganizationWebProxyClient != null ? (IOrganizationService)client.OrganizationWebProxyClient : (IOrganizationService)client.OrganizationServiceProxy;

    return service;
}

The code used is as above.

Sometimes I want to know why the connection doesn't work. 

  • Community Member Profile Picture
    Community Member Microsoft Employee on at
    RE: CrmServiceClient is null Value

    using (OrganizationWebProxyClient sdkService = new OrganizationWebProxyClient(serviceURL, false))

    Changing false to true enabled it.

    using (OrganizationWebProxyClient sdkService = new OrganizationWebProxyClient(serviceURL, true))

  • Community Member Profile Picture
    Community Member Microsoft Employee on at
    RE: CrmServiceClient is null Value

    When using the above code

    In Linq of EarlyBound type, an exception that Microsoft.Xrm.Sdk.Entity cannot be cast as a Model of ServiceContext occurs.

  • shivaram Profile Picture
    shivaram 3,315 on at
    RE: CrmServiceClient is null Value

    Hi,

    Hope this code helped you. If yes, please mark it as verified so others can use.

  • Community Member Profile Picture
    Community Member Microsoft Employee on at
    RE: CrmServiceClient is null Value

    Let's try that code. Thank you for answer.

  • Suggested answer
    shivaram Profile Picture
    shivaram 3,315 on at
    RE: CrmServiceClient is null Value

    Hi,

    I think this is most common issue and I really don't like this code as I always used to get null value I think This is due to .net Framework version. If you have Tenant Id as well then I will suggest below code to get the service.

    private static IOrganizationService ConnectionService(string url, string clientId, string clientSecret, string tenantId)
    {
    tenantId = "htps://login.microsoftonline.com/" + tenantId;
    Task<string> callTask = Task.Run(() => AccessTokenGenerator(url, clientId, clientSecret, tenantId));
    callTask.Wait();

    string token = callTask.Result;
    Uri serviceURL = new Uri(url + @"/xrmservices/2011/organization.svc/web?SdkClientVersion=9.1");
    using (OrganizationWebProxyClient sdkService = new OrganizationWebProxyClient(serviceURL, false))
    {
    sdkService.HeaderToken = token;
    System.Net.ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12 | SecurityProtocolType.Tls11;
    sdkService.InnerChannel.OperationTimeout = new TimeSpan(2, 30, 0);
    IOrganizationService organizationService = (IOrganizationService)sdkService != null ? (IOrganizationService)sdkService : null;
    return organizationService;
    }

    }

    private static async Task<string> AccessTokenGenerator(string url, string ClientId, string clientSecret, string tenantId)
    {
    var credentials = new ClientCredential(ClientId, clientSecret);
    var authContaxt = new AuthenticationContext(tenantId);
    var result = await authContaxt.AcquireTokenAsync(url, credentials);
    return result.AccessToken;
    }

  • Community Member Profile Picture
    Community Member Microsoft Employee on at
    RE: CrmServiceClient is null Value

    If the connection doesn't work, do I have to keep trying to connect using IsReady?

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