// Takes in read input to choose/display row and column.
public static string QuerySelection(Product2[,] products, string query)
{
char selection = 'O';
int rows = 0;
int counter = 0;
while (selection != 'E')
{
QueryDisplay(products, rows, counter, query);
selection = KeyUtil.GetKey();
selection = UpperCaseChar(selection);
switch (selection)
{
case 'E':
break;
case 'U':
if (counter != 0 && products[rows, counter] != null)
{
counter--;
QueryDisplay(products, rows, counter, query);
}
;
break;
case 'D':
counter++;
try
{
products[rows, counter].Test();
QueryDisplay(products, rows, counter, query);
}
catch (Exception E)
{
counter--;
}
break;
case 'P':
if (rows != 0)
{
rows--;
counter = 0;
QueryDisplay(products, rows, counter, query);
}
;
break;
case 'N':
rows++;
try
{
products[rows, counter].Test();
counter = 0;
QueryDisplay(products, rows, counter, query);
}
catch (Exception E)
{
rows--;
}
break;
case 'Q':
Environment.Exit(1);
break;
default:
break;
}
}
return(products[rows, counter].getItemNo());
}
