RequiredRouteConstraint Class  
Definition
Important
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Constraints a route parameter that must have a value.
public ref class RequiredRouteConstraint : Microsoft::AspNetCore::Routing::IRouteConstraintpublic class RequiredRouteConstraint : Microsoft.AspNetCore.Routing.IRouteConstrainttype RequiredRouteConstraint = class
    interface IRouteConstrainttype RequiredRouteConstraint = class
    interface IRouteConstraint
    interface IParameterPolicytype RequiredRouteConstraint = class
    interface IParameterPolicy
    interface IRouteConstraintPublic Class RequiredRouteConstraint
Implements IRouteConstraint- Inheritance
- 
				RequiredRouteConstraint
- Implements
Remarks
This constraint is primarily used to enforce that a non-parameter value is present during URL generation.
Constructors
| RequiredRouteConstraint() | 
Methods
| Match(HttpContext, IRouter, String, RouteValueDictionary, RouteDirection) | Determines whether the URL parameter contains a valid value for this constraint. |