indexOutofRange BubbleSort when using inputbox

Question

Its been bugging me for hours because it is always returning 0 at numbers[i] and I cant figure out the problem. code worked for a different program but I had to change it so it could have a custom array size and that's when everything went wrong. any help would be great. Thanks in advance.

int[] numbers = new int[Convert.ToInt16(TxtArray.Text)];
int j = 0;
for (j = numbers.Length; j >= 0; j--)
{
    int i = 0;
    for (i = 0; i <= j - 1; i++)
    {
        string NumbersInput = Microsoft.VisualBasic.Interaction.InputBox("Enter Numbers to be sorted",
                "Numbers Input", "", -1, -1);
        numbers[i] = Convert.ToInt16(NumbersInput);     
       //returns 0 in if statement
        if (numbers[i] < numbers[i + 1])
        {           
            int intTemp = 0;
            intTemp = numbers[i];
            numbers[i] = numbers[i + 1];
            numbers[i + 1] = intTemp;
        }
    }
}

for (int i = 0; i < numbers.Length; i++)
{
    LstNumbers.Items.Add(numbers[i]);
}

Answer 1

 private void button1_Click(object sender, EventArgs e)
{
  int sizeOfArrayInt = Convert.ToInt32(arraySize.Text);
  int[] array = new int[sizeOfArrayInt];
  string numbers = arrayValues.Text;
  string[] numbersSplit = numbers.Split(',');

  int count = 0;
  foreach (string character in numbersSplit)
  {
    int value;
    bool parse = Int32.TryParse(character, out value);
    if (value != null)
    {
      array[count] = value;
    }

    count++;
  }

  array = this.SortArray(array);
  foreach (int item in array)
  {
    this.listBox.Items.Add(item);
  }
}

private int[] SortArray(int[] arrayToSort)
{
  //int[] sortedArray = new int[arrayToSort.Length];
  int count = arrayToSort.Length;
  for (int j = count; j >= 0; j--)
  {
    int i = 0;
    for (i = 0; i <= j - 2; i++)
    {
      if (arrayToSort[i] < arrayToSort[i + 1])
      {
        int intTemp = 0;
        intTemp = arrayToSort[i];
        arrayToSort[i] = arrayToSort[i + 1];
        arrayToSort[i + 1] = intTemp;
      }
    }
  }

  return arrayToSort;
}

strong text

This I got to work as a Windows Form and the output displays in the list box as each array item or individual i iteration over the array. Of course there is no error checking. Hope that helps.