Optional parameter vs Empty parameters and overloaded constructor
To put it simply, let's say you have two methods:
public static void WriteMessage()
{
Console.Write("Empty Parameter Function");
}
public static void WriteMessage(string data = "Some Data")
{
Console.Write("Optional Parameter Function");
}
Why is it that if you call the WriteMessage function without any parameters, it triggers the "Empty Parameter Function"? I understand method overloading, but why does the optional parameter function work as if the empty parameter function does not exist, would it work?
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1 answer
The next point regarding Overload Resolution , from MSDN , explains this solution:
If two candidates are considered equally good, preference is given to the candidate that has no optional parameters for which the arguments were omitted in the call. This is a consequence of the general preference for overload resolution for candidates with fewer parameters.
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