Attribute - Revision history

Bjorn at 16:22, 16 March 2026

2026-03-16T16:22:02Z

← Older revision		Revision as of 16:22, 16 March 2026
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	~~In the C# programming language, attributes~~ are metadata attached to a field or a block of code like assemblies, members and types, and are equivalent to annotations in Java. Attributes are accessible to both the compiler and programmatically through reflection. In contrast, properties, in C# terminology, are members of a class which syntactically are used like instance (or class) variables, but are implemented as a pair of getter/setter functions. (In the absence of a setter, properties are read-only.)		Attributes are metadata attached to a field or a block of code like assemblies, members and types, and are equivalent to annotations in Java. Attributes are accessible to both the compiler and programmatically through reflection. In contrast, properties, in C# terminology, are members of a class which syntactically are used like instance (or class) variables, but are implemented as a pair of getter/setter functions. (In the absence of a setter, properties are read-only.)

	The example shows how attributes are defined in C#:		The example shows how attributes are defined in C#:

Bjorn at 16:21, 16 March 2026

2026-03-16T16:21:34Z

← Older revision		Revision as of 16:21, 16 March 2026
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	In the C# programming language, attributes are metadata attached to a field or a block of code like assemblies, members and types, and are equivalent to annotations in Java. Attributes are accessible to both the compiler and programmatically through reflection. In contrast, properties, in C# terminology, are members of a class which syntactically are used like instance (or class) variables, but are implemented as a pair of getter/setter functions. (In the absence of a setter, properties are read-only.)		In the C# programming language, attributes are metadata attached to a field or a block of code like assemblies, members and types, and are equivalent to annotations in Java. Attributes are accessible to both the compiler and programmatically through reflection. In contrast, properties, in C# terminology, are members of a class which syntactically are used like instance (or class) variables, but are implemented as a pair of getter/setter functions. (In the absence of a setter, properties are read-only.)

			The example shows how attributes are defined in C#:
	<pre>		<pre>
	[Obsolete("Use class C1 instead", IsError = true)] // causes compiler message saying		[Obsolete("Use class C1 instead", IsError = true)] // causes compiler message saying

Bjorn at 16:21, 16 March 2026

2026-03-16T16:21:12Z

← Older revision		Revision as of 16:21, 16 March 2026
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	In the C# programming language, attributes are metadata attached to a field or a block of code like assemblies, members and types, and are equivalent to annotations in Java. Attributes are accessible to both the compiler and programmatically through reflection. In contrast, properties, in C# terminology, are members of a class which syntactically are used like instance (or class) variables, but are implemented as a pair of getter/setter functions. (In the absence of a setter, properties are read-only.)		In the C# programming language, attributes are metadata attached to a field or a block of code like assemblies, members and types, and are equivalent to annotations in Java. Attributes are accessible to both the compiler and programmatically through reflection. In contrast, properties, in C# terminology, are members of a class which syntactically are used like instance (or class) variables, but are implemented as a pair of getter/setter functions. (In the absence of a setter, properties are read-only.)

			<pre>
			[Obsolete("Use class C1 instead", IsError = true)] // causes compiler message saying
			public class C // that C is obsolete
			{...}

			// class name ends with "Attribute"
			// but can be used as "Obsolete"
			public class ObsoleteAttribute : Attribute
			{
			public string Message { get; }
			public bool IsError { get; set; }
			public ObsoleteAttribute() {...}
			public ObsoleteAttribute(string msg) {...}
			public ObsoleteAttribute(string msg, bool error) {...}
			}

			[Obsolete]
			[Obsolete("This is obsolete")]
			[Obsolete("This is obsolete", false)]
			[Obsolete("This is obsolete", IsError = false)]
			</pre>

Bjorn at 16:20, 16 March 2026

2026-03-16T16:20:39Z

← Older revision		Revision as of 16:20, 16 March 2026
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	~~An attribute is~~ a ~~declarative tag used~~ to ~~add metadata~~, or ~~extra information~~, ~~to program elements such~~ as ~~assemblies, classes, methods~~, ~~and~~ properties~~. This metadata can be~~ read ~~at compile time or retrieved at run time using a technique called reflection to dynamically alter program behavior or provide additional context~~.		In the C# programming language, attributes are metadata attached to a field or a block of code like assemblies, members and types, and are equivalent to annotations in Java. Attributes are accessible to both the compiler and programmatically through reflection. In contrast, properties, in C# terminology, are members of a class which syntactically are used like instance (or class) variables, but are implemented as a pair of getter/setter functions. (In the absence of a setter, properties are read-only.)

Bjorn: Created page with "An attribute is a declarative tag used to add metadata, or extra information, to program elements such as assemblies, classes, methods, and properties. This metadata can be read at compile time or retrieved at run time using a technique called reflection to dynamically alter program behavior or provide additional context."

2026-03-16T15:56:02Z

Created page with "An attribute is a declarative tag used to add metadata, or extra information, to program elements such as assemblies, classes, methods, and properties. This metadata can be read at compile time or retrieved at run time using a technique called reflection to dynamically alter program behavior or provide additional context."

New page

An attribute is a declarative tag used to add metadata, or extra information, to program elements such as assemblies, classes, methods, and properties. This metadata can be read at compile time or retrieved at run time using a technique called reflection to dynamically alter program behavior or provide additional context.