private int GetInput()
{
_numericInput = -1;
string stringInput = String.Empty;
int keyCount = 2;
while ( keyCount > 0 )
{
ConsoleKeyInfo key = Console.ReadKey();
if ( key.Key == ConsoleKey.Escape )
return -1;
if ( key.Key == ConsoleKey.Enter )
{
if ( stringInput.Length > 0 )
_numericInput = Int32.Parse(stringInput);
return -2;
}
if ( key.KeyChar >= '0' && key.KeyChar <= '9' )
{
stringInput += key.KeyChar.ToString();
keyCount--;
}
else if ( key.Key == ConsoleKey.Backspace )
{
if ( stringInput.Length > 0 )
{
stringInput = stringInput.Substring(0, stringInput.Length - 1);
keyCount++;
Console.Write(" \b"); // clear last char
}
else
Console.Write(" "); // back to position
}
else
{
Console.Write("\b \b"); // clear invalid char
}
}
_numericInput = Int32.Parse(stringInput);
return -2; // force ENTER
}
