Question

I’m looking to do this in C#.

public struct Structure1
{ string string1 ;            //Can be set dynamically
  public string[] stringArr; //Needs to be set dynamically
}

In general, how should one initialize an array dynamically if need be?
In simplest of terms, I’m trying to achieve this in C#:

  int[] array;  
  for (int i=0; i < 10; i++) 
        array[i] = i;  

Another example:

  string[] array1;  
      for (int i=0; i < DynamicValue; i++) 
            array1[i] = "SomeValue";

Answer 1

First off, your code will almost work:

int[] array = new int[10]; // This is the only line that needs changing  
for (int i=0; i < 10; i++) 
    array[i] = i; 

You could potentially initialize your arrays within your struct by adding a custom constructor, and then initialize it calling the constructor when you create the struct. This would be required with a class.

That being said, I’d strongly recommend using a class here and not a struct. Mutable structs are a bad idea – and structs containing reference types are also a very bad idea.

---

Edit:

If you’re trying to make a collection where the length is dynamic, you can use List<T> instead of an array:

List<int> list = new List<int>();
for (int i=0; i < 10; i++) 
    list.Add(i);

// To show usage...
Console.WriteLine("List has {0} elements.  4th == {1}", list.Count, list[3]);