/// <summary>
/// Invokes the specified operation asynchronously.
/// </summary>
/// <remarks>
/// The <cref="AsyncInvocationCompleted"/> event will be fired when the request completes, and the response
/// will be available from the event args.
/// </remarks>
/// <param name="operationName">The name of the operation to invoke.</param>
/// <param name="requestJsml">The request object, as JSML.</param>
/// <returns>An invocation ID string.</returns>
public string InvokeOperationAsync(string operationName, string requestJsml)
{
// generate an invocation ID
var id = Guid.NewGuid().ToString();
// invoke operation asynchronously
var asyncTask = new AsyncTask();
string response = null;
asyncTask.Run(
delegate
{
response = InvokeHelper(operationName, requestJsml);
},
() => OnInvocationCompleted(id, response),
error => OnInvocationError(id, error));
return id;
}