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HttpMethodConstraint Constructor

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

Namespace:  System.Web.Routing
Assembly:  System.Web (in System.Web.dll)

public HttpMethodConstraint(
	params string[] allowedMethods
)

Parameters

allowedMethods
Type: System.String[]

The HTTP verbs that are valid for the route.

ExceptionCondition
ArgumentNullException

The allowedMethods parameter is null.

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);
}

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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