Insert

[csharpula csharp]

Hello ,
I am trying to do something like that:

string name="";
name.Insert(name.Length,args[i]);

and there is a string value in args[i] but the value of the name after
insertion is still "" and the args[i] value wasn't inserted. why?
thank u!

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[Jianwei Sun]

csharpula csharp wrote:

Hello ,
I am trying to do something like that:

string name="";
name.Insert(name.Length,args[i]);

and there is a string value in args[i] but the value of the name after
insertion is still "" and the args[i] value wasn't inserted. why?
thank u!

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Because the string is immutable in C#.

So, what you need to do is :

string insertedString=name.Insert(name.Length,args[i]); and the
insertedString is what you want.

HTH.

J.W.

[csharpula csharp]

That is not helping,I still get an empty string. Maybe it's because my
start index in Insert is 0?

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[Mythran]

"csharpula csharp" <cs*******@yahoo.comwrote in message
news:e$**************@TK2MSFTNGP03.phx.gbl...

That is not helping,I still get an empty string. Maybe it's because my
start index in Insert is 0?

*** Sent via Developersdex http://www.developersdex.com ***

It works just fine for me.

Here is a sample using the idea behind Jianwei's reply:

string arg = "test";
string name = "";
name = name.Insert(name.Length, arg);
Console.WriteLine(name);

The Insert method of the string class is a method that returns the resulting
string. It does not modify the string you are inserting into, but instead
returns the string with the inserted value in it.

Just like all methods of the string class, the original string doesn't
change.

HTH,
Mythran

[Jon Skeet [C# MVP]]

csharpula csharp <cs*******@yahoo.comwrote:

That is not helping,I still get an empty string. Maybe it's because my
start index in Insert is 0?

Nope, that shouldn't be the problem.

Could you post a short but complete program which demonstrates the
problem?

See http://www.pobox.com/~skeet/csharp/complete.html for details of
what I mean by that.

--
Jon Skeet - <sk***@pobox.com>
http://www.pobox.com/~skeet Blog: http://www.msmvps.com/jon.skeet
If replying to the group, please do not mail me too