Debugging Proxies in Exchange 2010

Create the Exchange Web Services proxy assembly by using WSDL.exe or the Add Web Reference menu in Visual Studio.

Reference the proxy assembly by adding the using directive for C# or the Imports directive for MicrosoftVisual Basic .NET.

using EWSClientProxyAssembly;

Write the code to create a Web service request. The following code shows the formation of a FindItem Operation request.

// Create the service binding.
ExchangeServiceBinding esb = new ExchangeServiceBinding();
esb.RequestServerVersionValue = new RequestServerVersion();
esb.RequestServerVersionValue.Version = ExchangeVersionType.Exchange2010;
esb.Credentials = new NetworkCredential("UserName", "Password", "Domain");
esb.Url = @"http://myexchangeserver.mydomain.com/EWS/Exchange.asmx";

// Create the FindItem request.
FindItemType findItemRequest = new FindItemType();
findItemRequest.Traversal = ItemQueryTraversalType.Shallow;

// Define which item properties are returned in the response.
ItemResponseShapeType itemProperties = new ItemResponseShapeType();
itemProperties.BaseShape = DefaultShapeNamesType.AllProperties;

// Add properties shape to request.
findItemRequest.ItemShape = itemProperties;

// Identify which folders to search to find items.
DistinguishedFolderIdType[] folderIDArray = new DistinguishedFolderIdType[2];
folderIDArray[0] = new DistinguishedFolderIdType();
folderIDArray[1] = new DistinguishedFolderIdType();
folderIDArray[0].Id = DistinguishedFolderIdNameType.inbox;
folderIDArray[1].Id = DistinguishedFolderIdNameType.drafts;

// Add folders to request.
findItemRequest.ParentFolderIds = folderIDArray;

// Send the request and get the response.
FindItemResponseType findItemResponse = esb.FindItem(findItemRequest);

Create a static method that is used to create the XML messages from the requests and responses. The following example takes the request and response and creates a text file that includes an XML message.

static void CreateXmlMessageTextFile(BaseRequestType request, BaseResponseMessageType response)
{
  // Create a text file with the request XML.
  using (StreamWriter myReqWriter = new StreamWriter(request.GetType().Name + ".xml"))
  {
    XmlSerializer mySerializer = new XmlSerializer(request.GetType());
    mySerializer.Serialize(myReqWriter, request);
  }

  // Create a text file with the response XML.
  using (StreamWriter myRespWriter = new StreamWriter(response.GetType().Name + ".xml"))
  {
    XmlSerializer mySerializer = new XmlSerializer(response.GetType());
    mySerializer.Serialize(myRespWriter, response);
  }
}

Add a call to the CreateXmlMessageTextFile static method after the request has been sent and the response received.

CreateXmlMessageTextFile(findItemRequest, findItemResponse);

Build and run the code example. The CreateXmlMessageTextFile method will create text files that contain the XML messages. The text files that contain the XML messages can be used to debug the application. Use the WSDL.exe, schema files, and the Exchange Web Services Reference to review and verify the XML.