using System;
public class test
{ static void Main(string[] args)
{ double val = 0;
string num = "";
Console.Write("Entra solo numeros: "); ConsoleKeyInfo chr;
do { chr = Console.ReadKey(true);
if (chr.Key != ConsoleKey.Backspace) { bool control = double.TryParse(chr.KeyChar.ToString(), out val);
if (control) { num += chr.KeyChar;
Console.Write(chr.KeyChar);
}
} else { if (chr.Key == ConsoleKey.Backspace && num.Length > 0) { num = num.Substring(0, (num.Length - 1));
Console.Write("\b \b"); }
}
}
while (chr.Key != ConsoleKey.Enter);
Console.Write("\n"); }
}
Crear cuenta
Comentarios sobre la versión: 1 (0)
No hay comentarios