XPathMessageFilterTable<TFilterData>.TryGetValue Method
Definition
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
Checks whether a filter is stored in the filter table.
public:
virtual bool TryGetValue(System::ServiceModel::Dispatcher::MessageFilter ^ filter, [Runtime::InteropServices::Out] TFilterData % data);public bool TryGetValue (System.ServiceModel.Dispatcher.MessageFilter filter, out TFilterData data);abstract member TryGetValue : System.ServiceModel.Dispatcher.MessageFilter * 'FilterData -> bool
override this.TryGetValue : System.ServiceModel.Dispatcher.MessageFilter * 'FilterData -> boolPublic Function TryGetValue (filter As MessageFilter, ByRef data As TFilterData) As BooleanParameters
- filter
- MessageFilter
A key to retrieve the data.
- data
- TFilterData
The data associated with the filter when this method returns true; otherwise, the default value for the type of the data parameter.
Returns
true if the filter is present in the filter table; false otherwise.
Remarks
This method is an efficient way to check whether a filter is in the filter table because when the filter is not present it returns false instead of throwing an exception. If you try to retrieve the filter from the table using its Item property (the indexer in C#) and it is not there, an exception is thrown.
