RouteValueExpressionBuilder Class
Retrieves the value that corresponds to a specified URL parameter in a routed page.
Assembly: System.Web (in System.Web.dll)
System.Web.Compilation::ExpressionBuilder
System.Web.Compilation::RouteValueExpressionBuilder
| Name | Description | |
|---|---|---|
![]() | RouteValueExpressionBuilder() | Initializes a new instance of the RouteValueExpressionBuilder class. |
| Name | Description | |
|---|---|---|
![]() | SupportsEvaluate | Gets a value that indicates whether an expression can be evaluated in a page that is not compiled.(Overrides ExpressionBuilder::SupportsEvaluate.) |
| Name | Description | |
|---|---|---|
![]() | Equals(Object^) | Determines whether the specified object is equal to the current object.(Inherited from Object.) |
![]() | EvaluateExpression(Object^, BoundPropertyEntry^, Object^, ExpressionBuilderContext^) | Retrieves the value that corresponds to a specified route key.(Overrides ExpressionBuilder::EvaluateExpression(Object^, BoundPropertyEntry^, Object^, ExpressionBuilderContext^).) |
![]() | Finalize() | Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.(Inherited from Object.) |
![]() | GetCodeExpression(BoundPropertyEntry^, Object^, ExpressionBuilderContext^) | Returns a code expression that is used to perform the property assignment in the generated page class.(Overrides ExpressionBuilder::GetCodeExpression(BoundPropertyEntry^, Object^, ExpressionBuilderContext^).) |
![]() | GetHashCode() | Serves as the default hash function. (Inherited from Object.) |
![]() ![]() | GetRouteValue(Page^, String^, Type^, String^) | Retrieves the value that corresponds to the specified URL parameter. |
![]() | GetType() | |
![]() | MemberwiseClone() | |
![]() | ParseExpression(String^, Type^, ExpressionBuilderContext^) | When overridden in a derived class, returns an object that represents the parsed expression.(Inherited from ExpressionBuilder.) |
![]() | ToString() | Returns a string that represents the current object.(Inherited from Object.) |
The RouteValueExpressionBuilder class makes it possible to use markup to set the property of a server control to the value of one of the URL parameters in a routed page.
The following example shows how to use markup to display the value of the URL parameter searchterm. The route is defined by using http://www.contoso.com/search/{searchterm} as the URL pattern.
<asp:Label ID="Label1" runat="server"
text="<%$ RouteValue:searchterm %>">
</asp:Label>
If the page is requested with the URL http://www.contoso.com/search/Bicycles, the Label control displays "Bicycles".
Available since 4.0
Any public static ( Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.



