CustomAttributeExtensions.IsDefined Method

Definition

Indicates whether custom attributes are applied to an element.

Overloads

IsDefined(MemberInfo, Type, Boolean)

Indicates whether custom attributes of a specified type are applied to a specified member, and, optionally, applied to its ancestors.

IsDefined(Assembly, Type)

Indicates whether custom attributes of a specified type are applied to a specified assembly.

IsDefined(MemberInfo, Type)

Indicates whether custom attributes of a specified type are applied to a specified member.

IsDefined(Module, Type)

Indicates whether custom attributes of a specified type are applied to a specified module.

IsDefined(ParameterInfo, Type)

Indicates whether custom attributes of a specified type are applied to a specified parameter.

IsDefined(ParameterInfo, Type, Boolean)

Indicates whether custom attributes of a specified type are applied to a specified parameter, and, optionally, applied to its ancestors.

IsDefined(MemberInfo, Type, Boolean)

Source:
CustomAttributeExtensions.cs
Source:
CustomAttributeExtensions.cs
Source:
CustomAttributeExtensions.cs

Indicates whether custom attributes of a specified type are applied to a specified member, and, optionally, applied to its ancestors.

C#
public static bool IsDefined(this System.Reflection.MemberInfo element, Type attributeType, bool inherit);

Parameters

element
MemberInfo

The member to inspect.

attributeType
Type

The type of the attribute to search for.

inherit
Boolean

true to inspect the ancestors of element; otherwise, false.

Returns

true if an attribute of the specified type is applied to element; otherwise, false.

Exceptions

element or attributeType is null.

attributeType is not derived from Attribute.

element is not a constructor, method, property, event, type, or field.

Applies to

.NET 9 and other versions
Product Versions
.NET Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9
.NET Framework 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard 1.0, 1.1, 1.2, 1.3, 1.4, 1.6, 2.0, 2.1
UWP 10.0

IsDefined(Assembly, Type)

Source:
CustomAttributeExtensions.cs
Source:
CustomAttributeExtensions.cs
Source:
CustomAttributeExtensions.cs

Indicates whether custom attributes of a specified type are applied to a specified assembly.

C#
public static bool IsDefined(this System.Reflection.Assembly element, Type attributeType);

Parameters

element
Assembly

The assembly to inspect.

attributeType
Type

The type of the attribute to search for.

Returns

true if an attribute of the specified type is applied to element; otherwise, false.

Exceptions

element or attributeType is null.

attributeType is not derived from Attribute.

Applies to

.NET 9 and other versions
Product Versions
.NET Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9
.NET Framework 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard 1.0, 1.1, 1.2, 1.3, 1.4, 1.6, 2.0, 2.1
UWP 10.0

IsDefined(MemberInfo, Type)

Source:
CustomAttributeExtensions.cs
Source:
CustomAttributeExtensions.cs
Source:
CustomAttributeExtensions.cs

Indicates whether custom attributes of a specified type are applied to a specified member.

C#
public static bool IsDefined(this System.Reflection.MemberInfo element, Type attributeType);

Parameters

element
MemberInfo

The member to inspect.

attributeType
Type

The type of attribute to search for.

Returns

true if an attribute of the specified type is applied to element; otherwise, false.

Exceptions

element or attributeType is null.

attributeType is not derived from Attribute.

element is not a constructor, method, property, event, type, or field.

Applies to

.NET 9 and other versions
Product Versions
.NET Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9
.NET Framework 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard 1.0, 1.1, 1.2, 1.3, 1.4, 1.6, 2.0, 2.1
UWP 10.0

IsDefined(Module, Type)

Source:
CustomAttributeExtensions.cs
Source:
CustomAttributeExtensions.cs
Source:
CustomAttributeExtensions.cs

Indicates whether custom attributes of a specified type are applied to a specified module.

C#
public static bool IsDefined(this System.Reflection.Module element, Type attributeType);

Parameters

element
Module

The module to inspect.

attributeType
Type

The type of attribute to search for.

Returns

true if an attribute of the specified type is applied to element; otherwise, false.

Exceptions

element or attributeType is null.

attributeType is not derived from Attribute.

Applies to

.NET 9 and other versions
Product Versions
.NET Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9
.NET Framework 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard 1.0, 1.1, 1.2, 1.3, 1.4, 1.6, 2.0, 2.1
UWP 10.0

IsDefined(ParameterInfo, Type)

Source:
CustomAttributeExtensions.cs
Source:
CustomAttributeExtensions.cs
Source:
CustomAttributeExtensions.cs

Indicates whether custom attributes of a specified type are applied to a specified parameter.

C#
public static bool IsDefined(this System.Reflection.ParameterInfo element, Type attributeType);

Parameters

element
ParameterInfo

The parameter to inspect.

attributeType
Type

The type of attribute to search for.

Returns

true if an attribute of the specified type is applied to element; otherwise, false.

Exceptions

element or attributeType is null.

attributeType is not derived from Attribute.

Applies to

.NET 9 and other versions
Product Versions
.NET Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9
.NET Framework 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard 1.0, 1.1, 1.2, 1.3, 1.4, 1.6, 2.0, 2.1
UWP 10.0

IsDefined(ParameterInfo, Type, Boolean)

Source:
CustomAttributeExtensions.cs
Source:
CustomAttributeExtensions.cs
Source:
CustomAttributeExtensions.cs

Indicates whether custom attributes of a specified type are applied to a specified parameter, and, optionally, applied to its ancestors.

C#
public static bool IsDefined(this System.Reflection.ParameterInfo element, Type attributeType, bool inherit);

Parameters

element
ParameterInfo

The parameter to inspect.

attributeType
Type

The type of attribute to search for.

inherit
Boolean

true to inspect the ancestors of element; otherwise, false.

Returns

true if an attribute of the specified type is applied to element; otherwise, false.

Exceptions

element or attributeType is null.

attributeType is not derived from Attribute.

Applies to

.NET 9 and other versions
Product Versions
.NET Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9
.NET Framework 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard 1.0, 1.1, 1.2, 1.3, 1.4, 1.6, 2.0, 2.1
UWP 10.0