Suppose I have this method I want to call, and it's from a third-party library so I cannot change its signature:
void PrintNames(params string[] names)
I'm writing this method that needs to call PrintNames:
void MyPrintNames(string[] myNames) { // How do I call PrintNames with all the strings in myNames as the parameter? } I would try
PrintNames(myNames); You would know if you had a look at the specs on MSDN: http://msdn.microsoft.com/en-us/library/w5zay9db.aspx
They demonstrated it quite clearly - note the comment in the sample code:
// An array argument can be passed, as long as the array // type matches the parameter type of the method being called. 
IList<string> myNames
IList<T> implements IEnumerable<T>, which means that you could have used myNames.ToArray(), as in PrintNames(myNames.ToArray()); :) Thanks for accepting my answer!Sure. The compiler will convert multiple parameters into an array, or just let you pass in an array directly.
public class Test { public static void Main() { var b = new string[] {"One", "Two", "Three"}; Console.WriteLine(Foo(b)); // Call Foo with an array Console.WriteLine(Foo("Four", "Five")); // Call Foo with parameters } public static int Foo(params string[] test) { return test.Length; } } 
stringarray of any length, or you can use theparamskeyword to allow calling the method with any number of arguments (provided they're the same type)