EN CSharp Attributes Reflection

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Attributes, reflection and dynamic

Manual C# · Examples UO

Attributes attach metadata to declarations; they do not necessarily execute an action themselves. Reflection inspects types and members at runtime. nameof produces a symbol name, typeof returns a Type object, and dynamic defers binding until runtime.

Simple example (Example.cs)

Save this example separately as Example.cs. Run it independently of the other examples on this page.

Example.cs:

// PROJECT-EXAMPLE
System.Type type = typeof(string);
System.Console.WriteLine(type.Name);
System.Console.WriteLine(type.IsValueType);

Result:

String
False

sealed class Example
{
    public string Name { get; set; } = "sample";
}
Type type = typeof(Example);
foreach (var property in type.GetProperties())
{
    UO.Print(property.Name);
}

dynamic value = new { Name = "Ore", Amount = 3 };
UO.Print($"{value.Name}: {value.Amount}");

Reflection and dynamic do not provide access to game data that the client did not receive. When calling an unknown member via dynamic, an error occurs at runtime; regular typed code often detects it before execution.

Official documentation: Attributes, reflection and dynamic - Microsoft Learn.