Route.ProcessConstraint Method  
Definition
Important
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Determines whether a parameter value matches the constraint for that parameter.
protected:
 virtual bool ProcessConstraint(System::Web::HttpContextBase ^ httpContext, System::Object ^ constraint, System::String ^ parameterName, System::Web::Routing::RouteValueDictionary ^ values, System::Web::Routing::RouteDirection routeDirection);
	protected virtual bool ProcessConstraint(System.Web.HttpContextBase httpContext, object constraint, string parameterName, System.Web.Routing.RouteValueDictionary values, System.Web.Routing.RouteDirection routeDirection);
	abstract member ProcessConstraint : System.Web.HttpContextBase * obj * string * System.Web.Routing.RouteValueDictionary * System.Web.Routing.RouteDirection -> bool
override this.ProcessConstraint : System.Web.HttpContextBase * obj * string * System.Web.Routing.RouteValueDictionary * System.Web.Routing.RouteDirection -> bool
	Protected Overridable Function ProcessConstraint (httpContext As HttpContextBase, constraint As Object, parameterName As String, values As RouteValueDictionary, routeDirection As RouteDirection) As Boolean
	Parameters
- httpContext
 - HttpContextBase
 
An object that encapsulates information about the HTTP request.
- constraint
 - Object
 
The regular expression or object to use to test parameterName.
- parameterName
 - String
 
The name of the parameter to test.
- values
 - RouteValueDictionary
 
The values to test.
- routeDirection
 - RouteDirection
 
A value that specifies whether URL routing is processing an incoming request or constructing a URL.
Returns
true if the parameter value matches the constraint; otherwise, false.
Exceptions
constraint is not a string that contains a regular expression.