Hashtable arrays

Question

I'm having a problem using arrays in a hastable. The arrays need to be a fixed size so I assign all of them the same double array with 14 zero values through a foreach statement. I am unable to change the first array in the hashtable without changing all of the other arrays, becuase that same first array they were all assigned with. I describe the problem here through an example. Hashtable H = new Hashtable(); double[] A = {1.5, 2.5, 3.5}; H.Add("A1", A); H.Add("A2", A); double[] T = (double[])H["A1"]; T = StackArrayMix.PopAdd(6.5, T); // this class pops off the last value // and adds a new one like a stack, the A2 value also gets the array, if I would // of given A2 a different array value it would not of happened Console.Write("A1: "); PrintArrayValues(T); // Output: 2.5, 3.5, 6.5 double[] T2 = (double[])H["A2"]; T2 = StackArrayMix.PopAdd(8.88, T2); Console.Write("A2: "); PrintArrayValues(T2); // Output: 3.5, 6.5, 8.88 // Why does the program interconnect the old arrays together and something like // this does not: int x = 5; int y = x; int z = x; y++; // y is now 6 but z stays at 5 Console.WriteLine("x: " + x + "y: " + y + "z: " + z); Maybe there is a better way to do this? Eventually I will need multidimmensional arrays.