Processing parameters before calling the base constructor

c#, inheritance

Solution

If you want to do something non-trivial (that doesn't fit naturally into a single expression that you can inline into the `base` call), then the only way to do that is in a `static` method, for example:

public B (string objectName) : base (SomethingComplex(objectName))
{
    //...
}
static MyObject SomethingComplex(string objectName)
{
    // this can now be arbitrarily complex
    if(string.IsNullOrWhiteSpace(objectName))
        throw new ArgumentException("objectName")
    // etc
    return new MyObject(objectName);
}

Problem

is it possible to process parameters before passing them into a base constructor? As in: ``` A --> B ``` Where A is an abstract class and B is the child class. A's constructor is like so: ``` Protected A (MyObject myObject) ``` B's constructor is like so: ``` Public B (string objectName) ``` I want it to be something like this ``` Public B (String objectName) : base (MyObject myObject) { myObject = new MyObject (objectName); } ```

Original source