<PackageReference Include="System.Reflection.Emit.ILGeneration" Version="4.6.0" />

System.Reflection.Emit.CustomAttributeBuilder

public class CustomAttributeBuilder
Helps build custom attributes.
namespace System.Reflection.Emit { public class CustomAttributeBuilder { public CustomAttributeBuilder(ConstructorInfo con, object[] constructorArgs); public CustomAttributeBuilder(ConstructorInfo con, object[] constructorArgs, FieldInfo[] namedFields, object[] fieldValues); public CustomAttributeBuilder(ConstructorInfo con, object[] constructorArgs, PropertyInfo[] namedProperties, object[] propertyValues); public CustomAttributeBuilder(ConstructorInfo con, object[] constructorArgs, PropertyInfo[] namedProperties, object[] propertyValues, FieldInfo[] namedFields, object[] fieldValues); } }