The GetCustomAttribute<T> method in the MemberDescription class is used to retrieve a custom attribute of a specified type T from the member. This method is useful when you need to access metadata attributes that are applied to a member, such as properties, methods, or fields, within the Sandbox environment.
To use the GetCustomAttribute<T> method, you need to specify the type of attribute you are looking for as the generic type parameter T. The method will return the attribute of type T if it exists on the member, or null if the attribute is not present.
// Example of using GetCustomAttribute<T> to retrieve a custom attribute
// Assume we have a custom attribute defined as follows:
[AttributeUsage(AttributeTargets.All)]
public class MyCustomAttribute : Attribute
{
public string Description { get; set; }
}
// Assume we have a class with a member that has this attribute:
public class MyClass
{
[MyCustomAttribute(Description = "This is a custom attribute.")]
public void MyMethod() { }
}
// Usage of GetCustomAttribute<T>:
MemberDescription memberDescription = TypeLibrary.GetTypeDescription(typeof(MyClass)).GetMethod("MyMethod");
MyCustomAttribute attribute = memberDescription.GetCustomAttribute<MyCustomAttribute>();
if (attribute != null)
{
// Access the attribute's properties
string description = attribute.Description;
// Do something with the description
}