void OnTypeSelectionChanged(object sender, RoutedEventArgs e)
{
var contentCorrelationDesigner = (ContentCorrelationTypeExpander)sender;
//is selection valid (valid type or property)
if (contentCorrelationDesigner.IsSelectionValid)
{
var path = contentCorrelationDesigner.GetMemberPath();
var type = contentCorrelationDesigner.GetSelectedType();
try
{
XmlNamespaceManager namespaceManager = null;
string xpathQuery = string.Empty;
var content = this.Activity.Properties["Content"].Value;
if (content.IsAssignableFrom <ReceiveMessageContent>() || content.IsAssignableFrom <SendMessageContent>())
{
//generating xpath for message content
xpathQuery = XPathQueryGenerator.CreateFromDataContractSerializer(type, path, out namespaceManager);
}
else
{
//generating xpath for parameter content
XName serviceContractName = null;
string operationName = null;
string parameterName = contentCorrelationDesigner.SelectedTypeEntry.Name;
bool isReply = this.Activity.IsAssignableFrom <SendReply>() || this.Activity.IsAssignableFrom <ReceiveReply>();
if (isReply)
{
operationName = (string)this.Activity.Properties["Request"].Value.Properties["OperationName"].ComputedValue;
serviceContractName = (XName)this.Activity.Properties["Request"].Value.Properties["ServiceContractName"].ComputedValue;
if (string.IsNullOrEmpty(operationName) || null == serviceContractName)
{
ModelItem requestDisplayName;
this.Activity.TryGetPropertyValue(out requestDisplayName, "Request", "DisplayName");
throw FxTrace.Exception.AsError(new InvalidOperationException(
string.Format(CultureInfo.CurrentUICulture, (string)this.FindResource("parametersRequiredText"), requestDisplayName.GetCurrentValue())));
}
}
else
{
operationName = (string)this.Activity.Properties["OperationName"].ComputedValue;
serviceContractName = (XName)this.Activity.Properties["ServiceContractName"].ComputedValue;
if (string.IsNullOrEmpty(operationName) || null == serviceContractName)
{
throw FxTrace.Exception.AsError(new InvalidOperationException(
string.Format(CultureInfo.CurrentUICulture, (string)this.FindResource("parametersRequiredText"), this.Activity.Properties["DisplayName"].ComputedValue)));
}
}
xpathQuery = ParameterXPathQueryGenerator.CreateFromDataContractSerializer(serviceContractName, operationName, parameterName, isReply, type, path, out namespaceManager);
}
//use CDF api to build a xpath out of type and its properties
string xpath = string.Format(CultureInfo.InvariantCulture, "sm:body(){0}", xpathQuery);
//get the context
//We need to copy over the namespaces from the manager's table 1 by 1. According to MSDN:
//If you specify an existing name table, any namespaces in the name table are not automatically added to XmlNamespaceManager.
//You must use AddNamespace and RemoveNamespace to add or remove namespaces.
XPathMessageContext messageContext = new XPathMessageContext();
foreach (string prefix in namespaceManager)
{
if (!string.IsNullOrEmpty(prefix) && !messageContext.HasNamespace(prefix) && prefix != "xmlns")
{
messageContext.AddNamespace(prefix, namespaceManager.LookupNamespace(prefix));
}
}
var typeEntry = (ExpanderTypeEntry)contentCorrelationDesigner.Tag;
//construct xpath
XPathMessageQuery query = new XPathMessageQuery(xpath, messageContext);
//store the xpath in the Tag property; this combo's selectedValue is bound to i
typeEntry.Tag = query;
this.SelectedIndex = 0;
this.IsDropDownOpen = false;
this.Query = query;
this.RaiseEvent(new RoutedEventArgs(XPathCreatedEvent, this));
}
catch (Exception err)
{
MessageBox.Show(
err.Message,
(string)this.Resources["controlTitle"],
MessageBoxButton.OK, MessageBoxImage.Error);
}
}
}
