Question

I know this is a simple question, but it had been bothering me for a whole day long. I try to set the length of my array through a variable inside a method(setLength). But after i call the method setLength, the length of my array still 0, doesn’t it was set to 5 when i calling the method setLength?

C# code snippet:

class myProject 
{
   public static int length = 0;
   public static string[] myArray1 = new string[length];
   public static string[] myArray2 = new string[length];

public static void setLength()
{
  length = 5;
}

public static void process()
{
  setLength();

    for(int i=0; i<length; i++)
     {
       .....code for my array
     }
}

Answer 1

You have to create a new array.

public static void setLength()
{
    length = 5;
    myArray1 = new string[length];
}

You can’t just change the length at will. c# arrays don’t support that.

If you want to use a variable-length structure, I’d suggest using a List<string>