variable reference in array... strings?

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

Code:

---

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?

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

Ok, let's simplify it a little bit:

Code:

---

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

Code:

---

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".

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 .