How do I make the params keyword usage similar to writing to the Console

Question

In relation to my last question (http://stackoverflow.com/questions/1588135/is-there-an-easier-way-of-passing-a-group-of-variables-as-an-array)

I was trying to pass string variables to a method to write to a stream, rather than doing the writing in each individual method.

The use of the params keyword is obviously a solution, however by using it I believe I can't do things like this:

Write("hello {0}",var1);

Which without makes the code quite messy. Is there a way to force this feature to my own methods?

Answer 1

void MyMethod(string format, params object[] obj) {
    var formattedString = String.Format(format, obj);
    // do something with it...
}

Answer 2

A method that has the params keyword can be passed an explicit array or an inline array.

Therefore, you can write the following:

public static void Write(params string[] stringsToWrite) {
    //...
    writer.WriteLine("Hello {0} {1} {2}", stringsToWrite);
    //...
}

EDIT Your question is unclear. If your asking whether a params array parameter can be given only one value, the answer is yes.

For example:

Write("myString");

The reason that many params methods in .Net have separate overloads that take just one parameter is to avoid creating an array for optimization reasons.