RequiredAttribute Class
Custom attribute that, when added to a field, property or parameter, throws:
- an ArgumentNullException if the target is assigned a null value;
- an ArgumentOutOfRangeException if the target is assigned an empty or white-space string.
Namespace: PostSharp.Patterns.Contracts
Assembly: PostSharp.Patterns.Common.dll
Syntax
[HasConstraint]
public sealed class RequiredAttribute : LocationContractAttribute, ILocationLevelAspect, IAspectRemarks
Error message is identified by RequiredErrorMessage.
Constructors
| Name | Description |
|---|---|
| RequiredAttribute() | Initializes a new RequiredAttribute. |
Methods
| Name | Description |
|---|---|
| GetErrorMessage() | Gets unformatted error message as defined by the instance. |
| ValidateValueDynamic(Object, String, LocationKind, LocationValidationContext) | Validates a weakly-typed (boxed) value, typically the value of a dependency property or an attached property. |
| ValidateValueObject(Object, String, LocationKind, LocationValidationContext) | |
| ValidateValueString(String, String, LocationKind, LocationValidationContext) |