RouteValueExpressionEditor.EvaluateExpression Method
Definition
Important
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Evaluates a RouteValue expression and provides the design-time value.
public:
override System::Object ^ EvaluateExpression(System::String ^ expression, System::Object ^ parseTimeData, Type ^ propertyType, IServiceProvider ^ serviceProvider);public override object EvaluateExpression (string expression, object parseTimeData, Type propertyType, IServiceProvider serviceProvider);override this.EvaluateExpression : string * obj * Type * IServiceProvider -> objPublic Overrides Function EvaluateExpression (expression As String, parseTimeData As Object, propertyType As Type, serviceProvider As IServiceProvider) As ObjectParameters
- expression
- String
A RouteValue expression to evaluate. The expression does not include the RouteValue expression prefix.
- parseTimeData
- Object
An object that contains additional parsing information that is used to evaluate the expression.
- propertyType
- Type
The type of the control property.
- serviceProvider
- IServiceProvider
A service provider implementation that is supplied by the designer host and that is used to obtain additional design-time services.
Returns
The value of the specified URL parameter if the expression evaluation succeeded; otherwise, null.
Remarks
The visual designer uses the EvaluateExpression method to evaluate a RouteValue expression and to provide the design-time value for an associated control property.
