C# listbox 99乘法表

          int[,] array = new int[10, 10];
            for (int z = 1; z <= 9; z++)
            {
                for (int b = 1; b <= 9; b++)
                {
                    array[z, b] = z * b;
                }
            }
            for (int c = 1; c <= 9; c++)
            {
                listBox1.Items.Add("" + c + "*1=" + array[c, 1] + "" + c + "*2=" + array[c, 2] + "" + c + "*3=" +array[c, 3] + "" + c + "*4=" + array[c, 4] + "" + c + "*5=" + array[c, 5] + "" + c + "*6=" + array[c, 6] + "" + c + "*7=" + array[c, 7] + "" + c + "*8=" + array[c, 8] + "" + c + "*9=" + array[c, 9]);
            }