StringLengthAttribute Class
Custom attribute that, when added to a field, property or parameter, throws an ArgumentException if the target is assigned a string of invalid length. Null strings are accepted and do not throw an exception.
Namespace: PostSharp.Patterns.Contracts
Assembly: PostSharp.Patterns.Common.dll
Syntax
[HasConstraint]
public sealed class StringLengthAttribute : LocationContractAttribute, ILocationLevelAspect, IAspectRemarks
Depending on supplied constructor arguments, one of the following holds:
-
if there is no minimum specified, then the error message is identified by StringLengthMaxErrorMessage
and can use additional argument
{4} to refer to the maximum value specified, -
or if there is maximum is equal to MaxValue, then the error message is identified by StringLengthMinErrorMessage
and can use additional argument
{4} to refer to the minimum value specified, -
otherwise, the error message is identified by StringLengthRangeErrorMessage
and can use additional arguments
{4} to refer to the minimum value specified and{5} to refer to the maximum value specified.
Constructors
| Name | Description |
|---|---|
| StringLengthAttribute(Int32) | Initializes a new StringLengthAttribute and specifies the maximum length. |
| StringLengthAttribute(Int32, Int32) | Initializes a new StringLengthAttribute and specifies the maximum length and the minimum length. |
Properties
| Name | Description |
|---|---|
| MaximumLength | Gets the maximum length. |
| MinimumLength | Gets the minimum length. |
Methods
| Name | Description |
|---|---|
| GetErrorMessage() | Gets unformatted error message as defined by the instance. |
| GetErrorMessageArguments() | Gets values of additional arguments for error message associated with particular instance of LocationContractAttribute.
There arguments can be referenced from error message string by |
| ValidateValue(String, String, LocationKind, LocationValidationContext) | |
| ValidateValueDynamic(Object, String, LocationKind, LocationValidationContext) | Validates a weakly-typed (boxed) value, typically the value of a dependency property or an attached property. |