variable reference in array... strings?

[Jhd.Honza]

Hi,
I am trying to access a variable I have stored in ListArray. If I use classes, like this:

 MyClass mc = new MyClass();
 MyListArray.Add("mc",mc);
 mc.MyValue = 4;

everything works, and ((MyClass)MyListArray["mc"]).MyValue is 4.

However, if I store string (or eg. TimeSpan) like this, (object MyString = "") I can not modify it without creating new copy... and MyString contains something else than (string)MyArray["MyString"]

How to access my string variable by name?

Do I have to create my own class for every variable I cannot modify without creating copy?

[Pirate]

I don't understand your problem with strings but read about hashtables .

[Jhd.Honza]

Ok, let's simplify it a little bit:

 Bitmap MyBitmap = new Bitmap(100,50);
 object MyVariableHolder = MyBitmap;
 MyBitmap.Height = 200;

 Console.WriteLine(MyBitmap.Height);
 Console.WriteLine(((Bitmap)MyVariableHolder).Height);

 results in:
   200
   200

However

 string MyString = "old string";
 object MyVariableHolder = MyString;
 MyString = "new string";

 Console.WriteLine(MyString);
 Console.WriteLine((string)MyVariableHolder);

 results in:
   new string
   old string

I understand what causes this, but I don't know, how to modify MyString to force MyVariableHolder to keep the reference and thus, return "new string".

[Pirate]

String obj is immutable because its value cannot be modified once it has been created .
You might need to read up these links :
http://msdn.microsoft.com/library/de...classtopic.asp
http://www.developer.com/net/net/article.php/3304901 http://www.dotnetspider.com/Technolo...x?SampleId=249
The last two links talk about stringbuilder which would be helpful in your case .