C# 数组移动项（不是 ArrayList/通用列表）

Question

Have an object which is an array (not arraylist or generic) that could hold a set of anything...

[[One],[Two],[Three],[Four]]

Want to move [Four] to in front of [Two] eg oldIndex = 3, newIndex = 1 so the result would be...

[[One],[Four][Two],[Three]]

Whats the most effient way to do this in .NET 2.0, eg

PropertyInfo oPI = ObjectType.GetProperty("MyArray", BindingFlags.Public | BindingFlags.Instance);
object ObjectToReorder = oPI.GetValue(ParentObject, null);
Array arr = ObjectToReorder as Array;
int oldIndex = 3;
int newIndex = 1;
//Need the re-ordered list still attached to the ParentObject

thanks in advance

Answer 1

void MoveWithinArray(Array array, int source, int dest)
{
  Object temp = array.GetValue(source);
  Array.Copy(array, dest, array, dest + 1, source - dest);
  array.SetValue(temp, dest);
}

Answer 2

Try this

Array someArray = GetTheArray();
object temp = someArray.GetValue(3);
someArray.SetValue(someArray.GetValue(1), 3);
someArray.SetValue(temp, 1);