How do I clone a generic list in C#?

Question

I have a generic list of objects in C#, and wish to clone the list. The items within the list are cloneable, but there doesn\'t seem to be an option to do list.Clone()

Answer 1

You can use extension method:

namespace extension
{
    public class ext
    {
        public static List clone(this List t)
        {
            List kop = new List();
            int x;
            for (x = 0; x < t.Count; x++)
            {
                kop.Add(t[x]);
            }
            return kop;
        }
   };

}

You can clone all objects by using their value type members for example, consider this class:

public class matrix
{
    public List> mat;
    public int rows,cols;
    public matrix clone()
    { 
        // create new object
        matrix copy = new matrix();
        // firstly I can directly copy rows and cols because they are value types
        copy.rows = this.rows;  
        copy.cols = this.cols;
        // but now I can no t directly copy mat because it is not value type so
        int x;
        // I assume I have clone method for List
        for(x=0;x

Note: if you do any change on copy (or clone) it will not affect the original object.