HttpMethodConstraint(String[]) Constructor

Definition

Namespace:

System.Web.Routing

Assembly:

System.Web.dll

Initializes a new instance of the HttpMethodConstraint class by using the HTTP verbs that are allowed for the route.

public:
 HttpMethodConstraint(... cli::array <System::String ^> ^ allowedMethods);

public HttpMethodConstraint (params string[] allowedMethods);

new System.Web.Routing.HttpMethodConstraint : string[] -> System.Web.Routing.HttpMethodConstraint

Public Sub New (ParamArray allowedMethods As String())

Parameters

allowedMethods

String[]

The HTTP verbs that are valid for the route.

Exceptions

ArgumentNullException

The allowedMethods parameter is null.

Examples

The following example shows a Route object whose Constraints property contains an item that has a key named httpMethod and that has a value that is an instance of the HttpMethodConstraint class.

void Application_Start(object sender, EventArgs e) 
{
    RegisterRoutes(RouteTable.Routes);
}

public static void RegisterRoutes(RouteCollection routes)
{
    string[] allowedMethods = { "GET", "POST" };
    HttpMethodConstraint methodConstraints = new HttpMethodConstraint(allowedMethods);

    Route reportRoute = new Route("{locale}/{year}", new ReportRouteHandler());
    reportRoute.Constraints = new RouteValueDictionary { { "httpMethod", methodConstraints } };

    routes.Add(reportRoute);
}

Sub Application_Start(ByVal sender As Object, ByVal e As EventArgs)
    RegisterRoutes(RouteTable.Routes)
End Sub

Shared Sub RegisterRoutes(ByVal routes As RouteCollection)
    Dim urlPattern As String
    Dim reportRoute As Route
    Dim allowedMethods() As String = {"GET", "POST"}
    Dim methodConstraints As HttpMethodConstraint  
    
    methodConstraints = New HttpMethodConstraint(allowedMethods)
    
    Dim constraintValues = New With {.httpMethod = methodConstraints}
    
    urlPattern = "{locale}/{year}"
    
    reportRoute = New Route(urlPattern, New ReportRouteHandler)
    reportRoute.Constraints = New RouteValueDictionary(constraintValues)
    
    routes.Add(reportRoute)
End Sub

See also

• ASP.NET Routing