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OLT.Core.Attribute.Abstractions 10.0.0

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Custom Attribute Classes

CodeAttribute & DescriptionAttribute

Enum Attribute to add a Code string value to an enum

NOTE: Description attrbute is found in the System.ComponentModel.DescriptionAttribute

public enum ApplicationTypes
{
 [Code("new-app")] 
 [Description("New Application")] 
 New = 1000,

 [Code("renew-app")] 
 [Description("Renew Application")] 
 Renew = 2000,
}

GetCodeEnum Extension

Extension to return string value from CodeAttribute

ApplicationTypes.New.GetCodeEnum(); //new-app

ApplicationTypes.Renew.GetDescription(); //Renew Application

KeyValueAttribute

public enum ApplicationTypes
{
 [KeyValue("Custom", "Another Test 1")]
 New = 1000,

 [KeyValue("Custom", "Value Test 2")]
 [KeyValue("Another", "Another Value")]
 Renew = 2000,
}

GetKeyValueAttributes Extension

Extension to return KeyValueAttribute from Enum

ApplicationTypes.New.GetKeyValueAttributes().FirstOrDefault(p => p.Key == "Custom")?.Value;


ApplicationTypes.Renew.GetKeyValueAttributes().Where(p => p.Key == "Custom");

UniqueIdAttribute

public enum ApplicationTypes
{
 [UniqueId("1393fff9-3850-4bb2-848b-18973a9f88d0")]
 New = 1000,
}

GetKeyValueAttributes Extension

Extension to return Guid value from UniqueId

var uid = OltAttributeExtensions.GetAttributeInstance<UniqueIdAttribute, ApplicationTypes>(ApplicationTypes.New)?.UniqueId;

SortOrderAttribute

public enum ApplicationTypes
{
 [SortOrder(10)]
 New = 1000,
}

OltSortOrderAttributeExtensions Extension

Extension to return Sort Order or default value

var sortOrder = ApplicationTypes.New.GetSortOrderEnum();

Not Empty Attributes

public class MyPersonModel
{
 [OltNotGuidEmpty]
 public Guid Id { get; set; }

 [StringLength(100)]
 [Required(AllowEmptyStrings = false)]
 public string Value { get; set; }

 [OltNotNull]
 public MyOtherModel Other { get; set; }

}