private void Calculadora_Load(object sender, EventArgs e)
{
this.mUltimaPulsacion = TipoTecla.NINGUNO;
this.mOperando1 = 0;
this.mOperando2 = 0;
this.mNumOperandos = 0;
this.mUltimaPulsacion = TipoTecla.NINGUNO;
btb1.Click += new EventHandler(btb0_Click);
btb2.Click += new EventHandler(btb0_Click);
btb3.Click += new EventHandler(btb0_Click);
btb4.Click += new EventHandler(btb0_Click);
btb5.Click += new EventHandler(btb0_Click);
btb6.Click += new EventHandler(btb0_Click);
btb7.Click += new EventHandler(btb0_Click);
btb8.Click += new EventHandler(btb0_Click);
btb9.Click += new EventHandler(btb0_Click);
this.btbsuma.Click += new EventHandler(btb0_Click);
this.btbresta.Click += new EventHandler(btb0_Click);
this.btbmultiplicacion.Click += new EventHandler(btb0_Click);
this.btbdivision.Click += new EventHandler(btb0_Click);
this.btbigual.Click += new EventHandler(btb0_Click);
this.btbac.Click += new EventHandler(btb0_Click);
}
private void frmCalculadora_Load(object sender, EventArgs e)
{
this.mUltimaPulsacion = TipoTecla.NINGUNO;
this.mOperando1 = 0;
this.mOperando2 = 0;
this.mNumOperandos = 0;
//todos los botones comparten el mismo código
//es decir, tienen el mismo manejador de eventos (evento click)
btn_1.Click += new EventHandler(btn_0_Click);
btn_2.Click += new EventHandler(btn_0_Click);
btn_3.Click += new EventHandler(btn_0_Click);
btn_4.Click += new EventHandler(btn_0_Click);
btn_5.Click += new EventHandler(btn_0_Click);
btn_6.Click += new EventHandler(btn_0_Click);
btn_7.Click += new EventHandler(btn_0_Click);
btn_8.Click += new EventHandler(btn_0_Click);
btn_9.Click += new EventHandler(btn_0_Click);
this.btnMas.Click += new EventHandler(btn_0_Click);
this.btnMenos.Click += new EventHandler(btn_0_Click);
this.btnProducto.Click += new EventHandler(btn_0_Click);
this.btnDivision.Click += new EventHandler(btn_0_Click);
this.btnIgual.Click += new EventHandler(btn_0_Click);
this.btnAC.Click += new EventHandler(btn_0_Click);
}
private void btn_0_Click(object sender, EventArgs e)
{
//detectar que botón se pulsó
// cast -- casting -- casteo
Button btn = (Button)sender;
string strnum = btn.Text;
if (this.mUltimaPulsacion != TipoTecla.DIGITO)
{
this.txtPantalla.Text = "";
}
if (validaDigito(strnum))
{
this.txtPantalla.Text += strnum; //método abreviado
this.mUltimaPulsacion = TipoTecla.DIGITO;
}
else if ((strnum == "+" || strnum == "-") && this.mUltimaPulsacion == TipoTecla.DIGITO)
{
if (this.mUltimaPulsacion == TipoTecla.DIGITO)
{
this.mNumOperandos++;
}
if (this.mNumOperandos == 1)
{
this.mOperando1 = Int32.Parse(this.txtPantalla.Text);
this.txtPantalla.Text = "";
}
else if (this.mNumOperandos == 2)
{
this.mOperando2 = Int32.Parse(this.txtPantalla.Text);
switch (this.mOperador)
{
case "+":
this.mOperando1 += this.mOperando2;
break;
case "-":
this.mOperando1 -= this.mOperando2;
break;
}
this.txtPantalla.Text = this.mOperando1.ToString();
this.mNumOperandos = 1;
}
this.mUltimaPulsacion = TipoTecla.OPERADOR;
this.mOperador = strnum;
}
}
private void frmCalculadora_Load(object sender, EventArgs e)
{
this.mUltimaPulsacion = TipoTecla.NINGUNO;
this.mOperando1 = 0;
this.mOperando2 = 0;
this.mNumOperandos = 0;
btn1.Click += new EventHandler(button1_Click);
btn2.Click += new EventHandler(button1_Click);
btn3.Click += new EventHandler(button1_Click);
btn5.Click += new EventHandler(button1_Click);
btn4.Click += new EventHandler(button1_Click);
btn7.Click += new EventHandler(button1_Click);
btn6.Click += new EventHandler(button1_Click);
btn8.Click += new EventHandler(button1_Click);
btn9.Click += new EventHandler(button1_Click);
btnSuma.Click += new EventHandler(button1_Click);
btnResta.Click += new EventHandler(button1_Click);
btnMultiplicacion.Click += new EventHandler(button1_Click);
btnDivision.Click += new EventHandler(button1_Click);
btnIgual.Click += new EventHandler(button1_Click);
btnLimpiar.Click += new EventHandler(button1_Click);
}
private void button1_Click(object sender, EventArgs e)
{
Button btn = (Button)sender;
string strnum = btn.Text;
if (this.mUltimaPulsacion != TipoTecla.DIGITO)
{
this.txtPantalla.Text = "";
}
if (validaDigito(strnum))
{
this.txtPantalla.Text += strnum; //método abreviado
this.mUltimaPulsacion = TipoTecla.DIGITO;
}
else if (strnum == "AC")
{
this.txtPantalla.Text = "";
this.mUltimaPulsacion = TipoTecla.AC;
this.mOperando1 = 0;
this.mOperando2 = 0;
this.mNumOperandos = 0;
}
else if (strnum == "+" || strnum == "-" || strnum == "X" || strnum == "/" || strnum == "=")
{
if (this.mUltimaPulsacion == TipoTecla.DIGITO)
{
this.mNumOperandos++;
}
if (this.mNumOperandos == 1 /*&& this.mUltimaPulsacion != TipoTecla.OPERADOR*/)
{
this.mOperando1 = Int32.Parse(this.txtPantalla.Text);
this.txtPantalla.Text = "";
auxOperador = strnum;
}
else if (this.mNumOperandos == 2 /*&& this.mUltimaPulsacion != TipoTecla.OPERADOR*/)
{
this.mOperando2 = Int32.Parse(this.txtPantalla.Text);
switch (this.mOperador)
{
case "+":
this.mOperando1 += this.mOperando2;
break;
case "-":
this.mOperando1 -= this.mOperando2;
break;
case "X":
this.mOperando1 *= this.mOperando2;
break;
case "/":
this.mOperando1 /= this.mOperando2;
break;
case "=":
if (auxOperador == "+")
{
this.mOperando1 += this.mOperando2;
}
else if (auxOperador == "-")
{
this.mOperando1 -= this.mOperando2;
}
else if (auxOperador == "X")
{
this.mOperando1 *= this.mOperando2;
}
else if (auxOperador == "/")
{
this.mOperando1 /= this.mOperando2;
}
/*else if (auxOperador == "=")
* this.mOperando1 = this.mOperando2;*/
break;
}
this.txtPantalla.Text = this.mOperando1.ToString();
this.mNumOperandos = 1;
}
this.mUltimaPulsacion = TipoTecla.OPERADOR;
this.mOperador = strnum;
}
}
