C#: Can I or how to assign attributes to method parameters? -

c# documentation says can assign custom attributes parameters. exact sentence is: "a target element can assembly, class, constructor, delegate, enum, event, field, interface, method, portable executable file module, parameter, property, return value, struct, or attribute." given that, correct syntax this:

private void somemethod ([customattribute(blah = "blah1")] string actualparam,  [customattribute(blah = "blah2")] datetime anotherparam )  { // method's body } 

or missing entirely?

that's said. parameters, you'll like:

void somemethod([marshalas(unmanagedtype.functionptr)] action del); 

for return value, you'd do:

[return: myattribute(param1 = "value1")] int method() 

similarly, there [module: myattribute], [assembly: myattribute] modules , assemblies.