XPathMessageFilterTable<TFilterData>.TryGetValue Method
Definition
Important
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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 -> bool
Public Function TryGetValue (filter As MessageFilter, ByRef data As TFilterData) As Boolean
Parameters
- 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.
Applies to
.NET