How to set optional parameter without compile-time constant

Question

Is there a way to write the C# method below:

public string Download(Encoding contentEncoding = null) {
    defaultEncoding = contentEncoding ?? Encoding.UTF8         


        

Answer 1

Use overloads:

public string Download(Encoding contentEncoding)
{
   // codes...
}

public string Download()
{
    return Download(Encoding.UTF8);
}