How to build a method with unspecified amount of params en C#

Question

This is my code:

 private static string AddURISlash(string remotePath) { if (remotePath.LastIndexOf("/") != remotePath.Length - 1) { remotePath += "/"; } return remotePath; }

But I need something like

AddURISlash("http://foo", "bar", "baz/", "qux", "etc/");

If I recall correctly, string.format is somehow like that...

String.Format("{0}.{1}.{2}.{3} at {4}", 255, 255, 255, 0, "4 p.m.");

Is there something in C# that allows me to do so?

I know I could do

private static string AddURISlash(string[] remotePath)

but that's not the idea.

If this is something in some framework can be done and in others not please specify and how to resolve it.

Thanks in advance

msdn.microsoft.com/en-us/library/w5zay9db%28v=vs.100%29.aspx — Tim Schmelter
– Tim Schmelter, Commented Feb 28, 2012 at 18:42

Jon Skeet · Accepted Answer · 2012-02-28 19:28:59Z

6

I think you want a parameter array:

private static string CreateUriFromSegments(params string[] segments)

Then you implement it knowing that remotePath is just an array, but you can call it with:

string x = CreateUriFromSegments("http://foo.bar", "x", "y/", "z");

(As noted in comments, a parameter array can only appear as the last parameter in a declaration.)

edited Feb 28, 2012 at 19:28

answered Feb 28, 2012 at 18:40

Jon Skeet

1.5m893 gold badges9.3k silver badges9.3k bronze badges

Sign up to request clarification or add additional context in comments.

9 Comments

ntziolis Over a year ago

It's also important to mention that it has to be the last parameter in the method signature.

apacay Over a year ago

Would this allow me both writing formats or should I overload? Does params keyword exist in 1.1? CreateUriFromSegments and UriFromSegments mean the same function?

Scott Chamberlain Over a year ago

@apacay Why are you using 1.1?

Patrick Lorio Over a year ago

I've been with C# for a while and never knew of that functionality. Thanks.

apacay Over a year ago

@Scott Enterprise restrictions. In some cases I'm only allowed to use either 1.1, 2.0 or 3.5

|

Msonic · Accepted Answer · 2012-02-28 18:49:05Z

5

You can use params, which lets you specify any amount of arguments

private static string AddURISlash(params string[] remotePaths) { foreach (string path in remotePaths) { //do something with path } }

Note that params will impact the performance of your code, so use it sparingly.

edited Feb 28, 2012 at 18:49

answered Feb 28, 2012 at 18:40

Msonic

1,45415 silver badges25 bronze badges

3 Comments

apacay Over a year ago

Would this allow me both writing formats (array and parameters) or should I overload? Does params keyword exist in 1.1?

Msonic Over a year ago

You should be able to use params in 1.1 without any problem. :)

Firo Over a year ago

@Msonic "not string arrays" -> to call AddURISlash(new string[] { "foo", "bar", "baz" }); is valid for this signature

user596075 · Accepted Answer · 2012-02-28 18:40:17Z

Try

private static string AddURISlash(params string[] remotePath)

That will allow you to pass a string[] as a number of separate parameters.

qxn · Accepted Answer · 2012-02-28 18:40:19Z

This might be what you're looking for (note the params keyword):

private static string AddURISlash(params string[] remotePath) { // ... }

Collectives™ on Stack Overflow

How to build a method with unspecified amount of params en C#

4 Answers 4

9 Comments

3 Comments

Comments

Comments

Linked

Hot Network Questions

Collectives™ on Stack Overflow

4 Answers 4

9 Comments

3 Comments

Comments

Comments

Linked

Related