Consuming a Web Service from Microsoft Visual Studio - Code Example

The code example below shows how a Web Service CustomerRelationsService and its operation GetAllCustomerContacts() can be called from Microsoft Visual Studio 2012 project using C#. Client proxy classes CustomerReleationsServiceClient, CustomerContacts, and CustomerContact were generated using Add Service Reference... as described here.

 1 ///

 2 /// The main program's entry point. This function is

 3 /// part of a Console Application project.

 4 ///

 5 ///The command-line arguments.

 6 publicstaticvoid Main(string[] args)

 7 {

 8     // Create an instance of the generated client proxy class.

 9     CustomerRelationsServiceClient client = newCustomerRelationsServiceClient();

 10 

 11     // Set credentials for the web service client. The use of 

 12     // "MyCredential.UserName" and "MyCredential.Password"

 13     // is to be replaced by your own user name and password.

 14 

 15     // Needed for "Basic" authentication.

 16     client.ClientCredentials.UserName.UserName = MyCredential.UserName;

 17     client.ClientCredentials.UserName.Password = MyCredential.Password;

 18 

 19     // Needed for "Windows" authentication.

 20     client.ClientCredentials.Windows.ClientCredential.UserName = MyCredential.UserName;

 21     client.ClientCredentials.Windows.ClientCredential.UserName = MyCredential.Password;

 22 

 23     // Optional part: Accept larger reponses than allowed by WCF defaults.

 24     if (client.Endpoint.Binding isBasicHttpBinding)

 25     {

 26         BasicHttpBinding endpointBinding = (BasicHttpBinding)client.Endpoint.Binding;

 27 

 28         // Adjust this size according to the expected size of the result.

 29         endpointBinding.MaxReceivedMessageSize *= 4;

 30         endpointBinding.MaxBufferSize = Math.Max(

 31             endpointBinding.MaxBufferSize, (int)endpointBinding.MaxReceivedMessageSize);

 32     }

 33 

 34     Console.WriteLine("Calling web service...\n");

 35 

 36     // Call the web service.

 37     CustomerContacts contacts = client.GetAllCustomerContacts();

 38 

 39     // Output the result ordered by the customer contact's last name.

 40     int count = 0;

 41     foreach (CustomerContact contact in contacts.OrderBy(contact => contact.LastName))

 42     {

 43         count++;

 44         Console.WriteLine(count + ". " +

 45             contact.LastName + ", " +

 46             contact.FirstName + ": " +

 47             (string.IsNullOrEmpty(contact.EMail) ?

 48                 "(No e-mail address)" : contact.EMail));

 49     }

 50 

 51     // Always close the client.

 52     client.Close();

 53 

 54     Console.WriteLine("\nHit a key to end the program...\n");

 55     Console.ReadKey(true);

 56 }