Passing a class or something similar as a parameter with default

I am trying to find a quick fix for an issue we have. I need to pass multiple optional parameters to multiple static methods and i also need to pass a couple new params Type[] parameters to add.

Obviously you can’t have i.e. params string[] param1 with other optional parameters.

Currently the best option i thought about was to create a custom class with a simple params in the constructor.

The problem is that i can’t find a way to setup a default value to make the parameter optional as it ask for a constant value and i can’t have that with a class. I also cannot make the parameter non optional as it shows error on every 70,000+ references.

So i would like to find a way to do the following somehow

public class CustomClass
{ 
    public CustomClass(params string[] stringParams)
    {
            
    }
}


public static object GenerateData(Manager manager, 
                                  string param1, 
                                  int param2, 
                                  string optionalParam1 = "incomplete", 
                                  CustomClass paramsClass = new CustomClass("val1","val2"))
{
    return "";
}

>Solution :

You could do something like this:

public static object GenerateData(Manager manager,
                                  string param1,
                                  int param2,
                                  string optionalParam1 = "incomplete",
                                  CustomClass paramsClass = null)
{
    paramsClass = paramsClass ?? new CustomClass("val1", "val2");
    return "";
}

Keep in mind, if this method resides in a library and those 70,000 calls are in something that references your library (rather than being in the same assembly, which you will recompile after this change), this is a breaking change. Just because you add an optional parameter doesn’t mean existing code will work if you don’t recompile that code.