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PositionalParameter Class

A parameter that is identified according to an integer representing its position in an argument list. When applied to a reflection-based component, Position will be matched against the indices of the component's constructor arguments. When applied to a delegate-based component, the parameter can be accessed using PositionalT(IEnumerableParameter, Int32).
Inheritance Hierarchy

Namespace:  Autofac
Assembly:  Autofac (in Autofac.dll) Version: 4.9.1+831973f4d02fbc619921dfaa8ac0c536f60ae7a3
Syntax
public class PositionalParameter : ConstantParameter

The PositionalParameter type exposes the following members.

Constructors
  NameDescription
Public methodPositionalParameter
Initializes a new instance of the PositionalParameter class.
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Properties
  NameDescription
Public propertyPosition
Gets the zero-based position of the parameter.
Public propertyValue
Gets the value of the parameter.
(Inherited from ConstantParameter.)
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Methods
  NameDescription
Public methodCanSupplyValue
Returns true if the parameter is able to provide a value to a particular site.
(Inherited from ConstantParameter.)
Public methodEquals
Determines whether the specified object is equal to the current object.
(Inherited from Object.)
Protected methodFinalize
Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.
(Inherited from Object.)
Public methodGetHashCode
Serves as the default hash function.
(Inherited from Object.)
Public methodGetType
Gets the Type of the current instance.
(Inherited from Object.)
Protected methodMemberwiseClone
Creates a shallow copy of the current Object.
(Inherited from Object.)
Public methodToString
Returns a string that represents the current object.
(Inherited from Object.)
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Examples

Component with parameter...

public class MyComponent
{
    public MyComponent(int amount) { ... }
}

Providing the parameter...

var builder = new ContainerBuilder();
builder.RegisterType<MyComponent>();
var container = builder.Build();
var myComponent = container.Resolve<MyComponent>(new PositionalParameter(0, 123));
See Also