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CrmServiceClient is null Value

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Posted on by Community Member

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.

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.

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Community Member on at

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

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shivaram 3,315 on at

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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;
}

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Community Member on at

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

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shivaram 3,315 on at

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Hi,

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

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Community Member on at

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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.

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Community Member on at

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

Changing false to true enabled it.

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

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