ExpressionServices.TryConvert<TResult> Method
Definition
Important
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Converts a workflow environment-aware expression to an activity tree.
public:
generic <typename TResult>
static bool TryConvert(System::Linq::Expressions::Expression<Func<System::Activities::ActivityContext ^, TResult> ^> ^ expression, [Runtime::InteropServices::Out] System::Activities::Activity<TResult> ^ % result);
public static bool TryConvert<TResult> (System.Linq.Expressions.Expression<Func<System.Activities.ActivityContext,TResult>> expression, out System.Activities.Activity<TResult> result);
static member TryConvert : System.Linq.Expressions.Expression<Func<System.Activities.ActivityContext, 'Result>> * Activity -> bool
Public Shared Function TryConvert(Of TResult) (expression As Expression(Of Func(Of ActivityContext, TResult)), ByRef result As Activity(Of TResult)) As Boolean
Type Parameters
- TResult
The type the expression is being converted to.
Parameters
- expression
- Expression<Func<ActivityContext,TResult>>
The expression being converted.
- result
- Activity<TResult>
The converted expression.
Returns
true
if the expression can be converted; otherwise, false
.
Remarks
The conversion methods in ExpressionServices are designed to work with variables and constants defined inside the workflow, or passed into the workflow via arguments.
Applies to
Σχόλια
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