Calculadora

calculadora en visula basic en lenguaje c#

using System;
using System.Collections.Generic;
using System.Drawing;
using System.Windows.Forms;

namespace calculadora
{
///
///Description of MainForm.
///
public partial class MainForm : Form
{
public MainForm()
{
//
// The InitializeComponent() call is required for Windows Forms designer support.
//InitializeComponent();

//
// TODO: Add constructor code after the InitializeComponent() call.
//
}

void UnoClick(object sender, EventArgs e)
{
if (val1.Visible==true)val1.Text+="1";
else
if (val2.Visible==true)
val2.Text+="1";
}

void DosClick(object sender, EventArgs e)
{
if (val1.Visible==true)
val1.Text+="2";
elseif (val2.Visible==true)
val2.Text+="2";
}

void TresClick(object sender, EventArgs e)
{
if (val1.Visible==true)
val1.Text+="3";
else
if (val2.Visible==true)val2.Text+="3";
}

void CuatroClick(object sender, EventArgs e)
{
if (val1.Visible==true)
val1.Text+="4";
else
if (val2.Visible==true)
val2.Text+="4";
}void CincoClick(object sender, EventArgs e)
{
if (val1.Visible==true)
val1.Text+="5";
else
if (val2.Visible==true)
val2.Text+="5";
}

void SeisClick(object sender,EventArgs e)
{
if (val1.Visible==true)
val1.Text+="6";
else
if (val2.Visible==true)
val2.Text+="6";
}

void SieteClick(object sender, EventArgs e)
{
if(val1.Visible==true)
val1.Text+="7";
else
if (val2.Visible==true)
val2.Text+="7";
}

void OchoClick(object sender, EventArgs e)
{
if (val1.Visible==true)val1.Text+="8";
else
if (val2.Visible==true)
val2.Text+="8";
}

void NueveClick(object sender, EventArgs e)
{

if (val1.Visible==true)
val1.Text+="9";
else...