Class UniqueAttribute

Indicates this property must be unique across all instances of that type.

Commonly used on key properties, or names/codes that must be unique

If multiple properties need to be unique together you can use MultipleUnique

Inheritance

System.Object

System.Attribute

System.ComponentModel.DataAnnotations.ValidationAttribute

DatabaseValidation

UniqueAttribute

Inherited Members

DatabaseValidation.RequiresValidationContext

DatabaseValidation.IsValid(Object, ValidationContext)

System.ComponentModel.DataAnnotations.ValidationAttribute.FormatErrorMessage(System.String)

System.ComponentModel.DataAnnotations.ValidationAttribute.GetValidationResult(System.Object, System.ComponentModel.DataAnnotations.ValidationContext)

System.ComponentModel.DataAnnotations.ValidationAttribute.IsValid(System.Object)

System.ComponentModel.DataAnnotations.ValidationAttribute.Validate(System.Object, System.ComponentModel.DataAnnotations.ValidationContext)

System.ComponentModel.DataAnnotations.ValidationAttribute.Validate(System.Object, System.String)

System.ComponentModel.DataAnnotations.ValidationAttribute.ErrorMessage

System.ComponentModel.DataAnnotations.ValidationAttribute.ErrorMessageResourceName

System.ComponentModel.DataAnnotations.ValidationAttribute.ErrorMessageResourceType

System.ComponentModel.DataAnnotations.ValidationAttribute.ErrorMessageString

System.Attribute.Equals(System.Object)

System.Attribute.GetCustomAttribute(System.Reflection.Assembly, System.Type)

System.Attribute.GetCustomAttribute(System.Reflection.Assembly, System.Type, System.Boolean)

System.Attribute.GetCustomAttribute(System.Reflection.MemberInfo, System.Type)

System.Attribute.GetCustomAttribute(System.Reflection.MemberInfo, System.Type, System.Boolean)

System.Attribute.GetCustomAttribute(System.Reflection.Module, System.Type)

System.Attribute.GetCustomAttribute(System.Reflection.Module, System.Type, System.Boolean)

System.Attribute.GetCustomAttribute(System.Reflection.ParameterInfo, System.Type)

System.Attribute.GetCustomAttribute(System.Reflection.ParameterInfo, System.Type, System.Boolean)

System.Attribute.GetCustomAttributes(System.Reflection.Assembly)

System.Attribute.GetCustomAttributes(System.Reflection.Assembly, System.Boolean)

System.Attribute.GetCustomAttributes(System.Reflection.Assembly, System.Type)

System.Attribute.GetCustomAttributes(System.Reflection.Assembly, System.Type, System.Boolean)

System.Attribute.GetCustomAttributes(System.Reflection.MemberInfo)

System.Attribute.GetCustomAttributes(System.Reflection.MemberInfo, System.Boolean)

System.Attribute.GetCustomAttributes(System.Reflection.MemberInfo, System.Type)

System.Attribute.GetCustomAttributes(System.Reflection.MemberInfo, System.Type, System.Boolean)

System.Attribute.GetCustomAttributes(System.Reflection.Module)

System.Attribute.GetCustomAttributes(System.Reflection.Module, System.Boolean)

System.Attribute.GetCustomAttributes(System.Reflection.Module, System.Type)

System.Attribute.GetCustomAttributes(System.Reflection.Module, System.Type, System.Boolean)

System.Attribute.GetCustomAttributes(System.Reflection.ParameterInfo)

System.Attribute.GetCustomAttributes(System.Reflection.ParameterInfo, System.Boolean)

System.Attribute.GetCustomAttributes(System.Reflection.ParameterInfo, System.Type)

System.Attribute.GetCustomAttributes(System.Reflection.ParameterInfo, System.Type, System.Boolean)

System.Attribute.GetHashCode()

System.Attribute.IsDefaultAttribute()

System.Attribute.IsDefined(System.Reflection.Assembly, System.Type)

System.Attribute.IsDefined(System.Reflection.Assembly, System.Type, System.Boolean)

System.Attribute.IsDefined(System.Reflection.MemberInfo, System.Type)

System.Attribute.IsDefined(System.Reflection.MemberInfo, System.Type, System.Boolean)

System.Attribute.IsDefined(System.Reflection.Module, System.Type)

System.Attribute.IsDefined(System.Reflection.Module, System.Type, System.Boolean)

System.Attribute.IsDefined(System.Reflection.ParameterInfo, System.Type)

System.Attribute.IsDefined(System.Reflection.ParameterInfo, System.Type, System.Boolean)

System.Attribute.Match(System.Object)

System.Attribute.TypeId

System.Object.Equals(System.Object, System.Object)

System.Object.GetType()

System.Object.MemberwiseClone()

System.Object.ReferenceEquals(System.Object, System.Object)

System.Object.ToString()

Namespace: LemonEdge.API.Attributes.Validation

Assembly: API.dll

Syntax

[AttributeUsage(AttributeTargets.Property, Inherited = false, AllowMultiple = false)]
public class UniqueAttribute : DatabaseValidation

Properties

AllowNullOrEmpty

Declaration

public bool AllowNullOrEmpty { get; set; }

Property Value

Type	Description
System.Boolean

Methods

IsValid(Object, IEntityUpdater, IReadOnlyCache, UserInfo, ValidationContext)

Declaration

protected override Task<ValidationResult> IsValid(object value, IEntityUpdater dbCon, IReadOnlyCache cache, UserInfo user, ValidationContext validationContext)

Parameters

Type	Name	Description
System.Object	value
IEntityUpdater	dbCon
IReadOnlyCache	cache
UserInfo	user
System.ComponentModel.DataAnnotations.ValidationContext	validationContext

Returns

Type	Description
System.Threading.Tasks.Task<System.ComponentModel.DataAnnotations.ValidationResult>

Overrides

DatabaseValidation.IsValid(Object, IEntityUpdater, IReadOnlyCache, UserInfo, ValidationContext)

Extension Methods

MiscExtensions.SetIfNotEqual<T, P>(T, Expression<Func<T, P>>, P)

ReflectionExtensions.ClearEventInvocations(Object, String)

StringExtensions.ToCSVFormatString(Object, Type)

SQLExtensions.ToSQLValue(Object, Boolean)