VISUAL STUDIO C#

1. public class C_Naturales<br /> {<br /> #region atributos<br /> int Numero;<br /> #endregion<br /> #region propiedades<br /> public int P_numero<br /> {<br /> get{return Numero;}<br /> set{Numero =value; }<br /> #endregion<br /> }<br /> #region metodos<br /> public int sumar_digitos()<br /> {<br /> int sd = 0;<br /> while (Numero > 0)<br /> {<br /> sd = sd + (Numero % 10);<br /> Numero = Numero / 10;<br /> }<br /> return sd;<br /> }<br /> public int contarpares()<br /> {<br /> int CP = 0;<br /> while (Numero > 0) <br /> {<br /> if (((Numero % 10) % 2) == 0)<br /> {<br /> CP++;<br /> }<br /> Numero = Numero / 10;<br /> }<br /> return CP;<br /> }<br /> #endregion<br /> }<br />}<br />COMO LLAMAR EN EL BUTTON<br />public partial class Form1 : Form<br /> {<br /> public Form1()<br /> {<br /> InitializeComponent();<br /> }<br /> C_Naturales num=new C_Naturales();<br /> private void button1_Click(object sender, EventArgs e)<br /> {<br /> num.P_numero = Convert.ToInt16(textBox1.Text);<br /> int n = num.sumar_digitos();<br /> MessageBox.Show(Convert.ToString(n));<br /> }<br /> private void button2_Click(object sender, EventArgs e)<br /> {<br /> num.P_numero = Convert.ToInt32(textBox1.Text);<br /> int n = num.contarpares();<br /> MessageBox.Show(Convert.ToString(n));<br /> }<br /> }<br />}<br />