Class ValueSourceAttribute

Overrides the default binding behavior for a typed handler request property.

Inheritance
object
Attribute
ValueSourceAttribute
Inherited Members
Namespace: NanoRoute
Assembly: NanoRoute.dll
Syntax
[AttributeUsage(AttributeTargets.Property, AllowMultiple = false)]
public sealed class ValueSourceAttribute : Attribute
Examples
public sealed class UserRequest
{
    [ValueSource(ValueSource.Parameter, Name = "user_id")]
    public int Id { get; init; }
}

Constructors

ValueSourceAttribute(ValueSource)

Overrides the default binding behavior for a typed handler request property.

Declaration
public ValueSourceAttribute(ValueSource source)
Parameters
Type Name Description
ValueSource source

The source used to populate the annotated property.
Examples
public sealed class UserRequest
{
    [ValueSource(ValueSource.Parameter, Name = "user_id")]
    public int Id { get; init; }
}

Properties

Name

Gets or sets an optional binding name.

Declaration
public string? Name { get; init; }
Property Value
Type Description
string
Remarks

For Parameter, this overrides the key looked up in Parameters. For ServiceLocator, this is treated as the keyed service name. Skip does not allow a name because no value is read.

Examples
[ValueSource(ValueSource.Parameter, Name = "user_id")]
public int Id { get; init; }
Exceptions
Type Condition
InvalidOperationException

Thrown when a name is assigned while Source is Skip.

Source

Gets the binding source used for the annotated property.

Declaration
public ValueSource Source { get; }
Property Value
Type Description
ValueSource