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system.argumentnullexception value cannot be null. parameter name device credentials

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Hello,

i have a code to get an organization with online and on premise parametres

with onpremise , the program work fine but when i choose online deployment i get the error " system.argumentnullexception value cannot be null. parameter name device credentials"

iwant work without DeviceCredentials , this is my code

 public static List<string> GetOrganizations(ConnectionParams connectionParams)
        {
 
            ClientCredentials userCredentials = new ClientCredentials();
            userCredentials.Windows.ClientCredential = new System.Net.NetworkCredential();
 
            List<string> orgNames = new List<string>();
            switch (connectionParams.Deployment)
            {
                case DeploymentTypes.OnPremise:
                    if (connectionParams.UseDefaultCredentials)
                    {
                        userCredentials.Windows.ClientCredential = new System.Net.NetworkCredential();
                    }
                    else
                    {
                        userCredentials.Windows.ClientCredential = new System.Net.NetworkCredential(connectionParams.UserName, connectionParams.Password, connectionParams.Domain);
                      
                    }
 
                    break;
                case DeploymentTypes.Online:                                        
                    userCredentials.Windows.ClientCredential = new System.Net.NetworkCredential(connectionParams.UserName, connectionParams.Password);
                    break;
                default:
                    break;
            }
 
 
 
            DiscoveryServiceProxy discoveryProxy = new DiscoveryServiceProxy(new Uri(connectionParams.DiscoveryUrl), null, userCredentials, null);
            discoveryProxy.Authenticate();
 
            RetrieveOrganizationsRequest retrieveOrganizationsRequest = new RetrieveOrganizationsRequest();
            RetrieveOrganizationsResponse retrieveOrganizationsResponse = discoveryProxy.Execute(retrieveOrganizationsRequest) as RetrieveOrganizationsResponse;
            if (retrieveOrganizationsResponse.Details.Count != 0)
            {
                foreach (OrganizationDetail orgInfo in retrieveOrganizationsResponse.Details)
                    orgNames.Add(orgInfo.UrlName);
            }
return orgNames; 
}

Thanks for your help

Tuesday, March 24, 2015 4:14 PM

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system.argumentnullexception value cannot be null. parameter name device credentials

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