COLEGIO MUNICIPAL “HUMBERTO MATA MARTINEZ

NOMBRE: LENIN TOAPANTACURSO: SUGUNDO TECNICOMATERIA: PROGRAMACION

INTRODUCCION DE VISUAL BASIC

Visual Studio es un conjunto completo de herramientas de desarrollo para la generación de aplicaciones Web ASP.NET, Servicios Web XML, aplicaciones de escritorio y aplicaciones móviles. Visual Basic, Visual C++, Visual C# y Visual J# utilizan el mismo entorno de desarrollo integrado (IDE), que les permite compartir herramientas y facilita la creación de soluciones en varios lenguajes. Asimismo, dichos lenguajes aprovechan las funciones de .NET Framework, que ofrece acceso a tecnologías clave para simplificar el desarrollo de aplicaciones Web ASP y Servicios Web XML.

PROGRAMAS DE VISUAL BASIC AREA Y PERIMETRO DE CUADRADO

 Public Class Form1 Dim a As Double Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click a = Val(TextBox1.Text) TextBox2.Text = a * a TextBox3.Text = 4 * a  End Sub  Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click TextBox1.Text = "" TextBox2.Text = "" TextBox3.Text = ""  End Sub  Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click End End SubEnd Class

AREA Y PERIMETRO DE UN TRIANGULO

Public Class Form1 Dim BA, AL, H As Double  Private Sub Label3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Label3.Click  End Sub  Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click BA = Val(TextBox1.Text) AL = Val(TextBox2.Text) TextBox3.Text = (BA * AL) / 2 H = 1 / 2 * ((BA ^ 2) + (AL ^ 2)) TextBox4.Text = H + BA + AL End Sub  Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click TextBox1.Text = "" TextBox2.Text = "" TextBox3.Text = "" End Sub

Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click End End Sub  Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load  End SubEnd Class

AREA Y PERIMATRO DEL RECTANGULO

Public Class Form1 Dim a As Double Dim b As Double Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click a = Val(TextBox1.Text) b = Val(TextBox2.Text) TextBox3.Text = a * b TextBox4.Text = (2 * a) + (2 * b)  End Sub Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click TextBox1.Text = "" TextBox2.Text = "" TextBox3.Text = "" TextBox4.Text = "" End Sub Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click End End SubEnd Class

AREA DEL ROMBO

Public Class Form1 Dim DM As Double Dim Ds As Double Dim l1 As Double Dim l2 As Double Dim l3 As Double Dim l4 As Double  Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click DM = Val(TextBox1.Text) Ds = Val(TextBox2.Text)  l1 = Val(TextBox3.Text) l2 = Val(TextBox4.Text) l3 = Val(TextBox5.Text) l4 = Val(TextBox6.Text) TextBox7.Text = (DM * Ds) / 2 TextBox8.Text = l1 + l2 + l3 + l4 End Sub

  Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click TextBox1.Clear() TextBox2.Clear() TextBox3.Clear() TextBox4.Clear() TextBox5.Clear() TextBox6.Clear() TextBox7.Clear() TextBox8.Clear() End Sub  Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click EndEnd SubEnd Class

CALCULADORA

Public Class Form1 Dim DATO As Double Dim DATO2 As Double Dim RESUL As Double Dim OPE As Double Dim PUN As Double  Private Sub BT17_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BT17.Click TextBox1.Clear() BT2.Enabled = True End Sub  Private Sub BT1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BT1.Click TextBox1.Text = TextBox1.Text & "0" End Sub  Private Sub BT2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BT2.Click TextBox1.Text = TextBox1.Text & "." PUN = 1 If PUN = 1 Then

BT2.Enabled = False  End If End Sub  Private Sub BT5_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BT5.Click TextBox1.Text = TextBox1.Text & "1" End Sub  Private Sub BT6_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BT6.Click TextBox1.Text = TextBox1.Text & "2" End Sub  Private Sub BT7_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BT7.Click TextBox1.Text = TextBox1.Text & "3" End Sub Private Sub BT9_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BT9.Click

TextBox1.Text = TextBox1.Text & "4" End Sub 

Private Sub BT10_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BT10.Click TextBox1.Text = TextBox1.Text & "5" End Sub  Private Sub BT11_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BT11.Click TextBox1.Text = TextBox1.Text & "6" End Sub  Private Sub BT13_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BT13.Click TextBox1.Text = TextBox1.Text & "7" End Sub  Private Sub BT14_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BT14.Click TextBox1.Text = TextBox1.Text & "8" End Sub  Private Sub BT15_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BT15.Click TextBox1.Text = TextBox1.Text & "9" End Sub 

Private Sub BT16_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BT16.Click OPE = 1 DATO = Val(TextBox1.Text) TextBox1.Clear() BT2.Enabled = True  End Sub  Private Sub BT3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BT3.Click DATO2 = Val(TextBox1.Text) If OPE = 1 Then RESUL = DATO + DATO2 TextBox1.Text = RESUL BT2.Enabled = True Else If OPE = 2 Then RESUL = DATO - DATO2 TextBox1.Text = RESUL BT2.Enabled = True Else

If OPE = 2 Then RESUL = DATO - DATO2 TextBox1.Text = RESUL BT2.Enabled = True Else If OPE = 3 Then RESUL = DATO * DATO2 TextBox1.Text = RESUL BT2.Enabled = True Else If OPE = 4 Then RESUL = DATO / DATO2 TextBox1.Text = RESUL BT2.Enabled = True End If  End If  End If End If End Sub  Private Sub BT12_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BT12.Click

OPE = 2 DATO = Val(TextBox1.Text) TextBox1.Clear() BT2.Enabled = True End Sub  Private Sub BT8_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BT8.Click OPE = 3 DATO = Val(TextBox1.Text) TextBox1.Clear() BT2.Enabled = True End Sub  Private Sub BT4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BT4.Click OPE = 4 DATO = Val(TextBox1.Text) TextBox1.Clear() BT2.Enabled = True End Sub End Class 

CIRCULO

Public Class Form1  Dim PI As Double Dim Rd As Double Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click PI = 3.1415 Rd = Val(TextBox1.Text) TextBox2.Text = PI * (Rd * Rd) TextBox3.Text = 2 * (PI * Rd) End Sub Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click TextBox1.Clear() TextBox2.Clear() TextBox3.Clear()  End Sub Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click End End SubEnd Class

DOLAR Y EURO

Public Class Form1 Dim dl As Double Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click dl = Val(TextBox1.Text) TextBox2.Text = dl * 0.7829 End Sub  Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click TextBox1.Clear() TextBox2.Clear() End Sub  Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click End End SubEnd Class

ESCALA DE CALIFICACION

Public Class Form1 Dim n1 As Double Dim n2 As Double Dim n3 As Double Dim n4 As Double Dim resul As Double Dim pro As Double Dim div As Double  Private Sub TextBox1_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TextBox1.TextChanged n1 = Val(TextBox1.Text) If n1 > 10 Then MsgBox("error nota mayor a 10") End If End Sub  Private Sub TextBox2_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TextBox2.TextChanged n2 = Val(TextBox2.Text) If n2 > 10 Then MsgBox("error nota mayor a 10") End If End Sub

Private Sub TextBox3_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TextBox3.TextChanged n3 = Val(TextBox3.Text) If n3 > 10 Then MsgBox("error nota mayor a 10") End If  End Sub  Private Sub TextBox4_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TextBox4.TextChanged n4 = Val(TextBox4.Text) If n4 > 10 Then MsgBox("error nota mayor a 10") End If End Sub  Private Sub BT5_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BT5.Click TextBox5.Text = TextBox5.Text TextBox5.Text = (n1 + n2 + n3 + n4) End Sub

Private Sub BT6_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BT6.Click div = 4 TextBox6.Text = (n1 + n2 + n3 + n4) / div resul = (n1 + n2 + n3 + n4) / div End Sub  Private Sub BT7_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BT7.Click If resul = 10 Then TextBox7.Text = " supera los aprendizajes requeridos" Else If resul >= 8 Then TextBox7.Text = "domina los aprendizajes requeridos " Else If resul = 7 Then TextBox7.Text = "alcansa los aprendizajes requeridos " Else If resul >= 5 Then TextBox7.Text = "proximo los aprendizajes requeridos " Else If resul <= 4 Then TextBox7.Text = "no alcansa los aprendizajes requeridos “

FACTURA

Public Class Form1  Dim CT As Double Dim CT1 As Double Dim CT2 As Double Dim CT3 As Double Dim CT4 As Double Dim VU As Double Dim VU1 As Double Dim VU2 As Double Dim VU3 As Double Dim VU4 As Double Dim Vt As Double Dim Vt1 As Double Dim Vt2 As Double Dim Vt3 As Double Dim Vt4 As Double Dim R As Double Dim v2 As Double Dim v3 As Double  Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

CT = Val(TextBox1.Text) CT1 = Val(TextBox2.Text) CT2 = Val(TextBox3.Text) CT3 = Val(TextBox4.Text) CT4 = Val(TextBox5.Text) VU = Val(TextBox11.Text) VU1 = Val(TextBox12.Text) VU2 = Val(TextBox13.Text) VU3 = Val(TextBox14.Text) VU4 = Val(TextBox15.Text) TextBox16.Text = CT * VU TextBox17.Text = CT1 * VU1 TextBox18.Text = CT2 * VU2 TextBox19.Text = CT3 * VU3 TextBox20.Text = CT4 * VU4  Vt = Val(TextBox16.Text) Vt1 = Val(TextBox17.Text) Vt2 = Val(TextBox18.Text) Vt3 = Val(TextBox19.Text) Vt4 = Val(TextBox20.Text) TextBox21.Text = Vt + Vt1 + Vt3 + Vt4

If (TextBox21.Text > 10000) Then TextBox22.Text = (TextBox21.Text * 100) / 25 MsgBox("DESCUENTO DE 25%") Else If (TextBox21.Text > 5000 & TextBox21.Text < 10000) Then TextBox22.Text = (TextBox21.Text * 100) / 20 MsgBox("DESCUENTO DE 20%") Else If (TextBox21.Text >= 2500 & TextBox21.Text < 5000) Then TextBox22.Text = (TextBox21.Text * 100) / 15 MsgBox("DESCUENTO DE 15%") Else If (TextBox21.Text >= 1200 & TextBox21.Text < 2500) Then TextBox22.Text = (TextBox21.Text * 100) / 10 MsgBox("DESCUENTO DE 10%") Else If (TextBox21.Text >= 350 & TextBox21.Text < 1200) Then TextBox22.Text = (TextBox21.Text * 100) / 5 MsgBox("DESCUENTO DE 5%") Else If (TextBox21.Text < 350) Then TextBox22.Text = 0.0 MsgBox("NO EXISTE DESCUENTO")

End If End If End If End If End If TextBox23.Text = TextBox21.Text - TextBox22.Text R = TextBox21.Text * 0.1 v2 = Val(TextBox22.Text) v3 = Val(TextBox24.Text) TextBox24.Text = TextBox21.Text - R TextBox25.Text = (TextBox21.Text - v2) + v3 End Sub Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click TextBox1.Clear() TextBox2.Clear() TextBox3.Clear() TextBox4.Clear() TextBox5.Clear() TextBox6.Clear() TextBox7.Clear() TextBox8.Clear() TextBox9.Clear() TextBox10.Clear()

TextBox11.Clear() TextBox12.Clear() TextBox13.Clear() TextBox14.Clear() TextBox15.Clear() TextBox16.Clear() TextBox17.Clear() TextBox18.Clear() TextBox19.Clear() TextBox20.Clear() TextBox21.Clear() TextBox22.Clear() TextBox23.Clear() TextBox24.Clear() TextBox25.Clear() End Sub  Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click End End SubEnd Class

FIGURAS GEOMETRICAS

Public Class Form1 Dim a As Double Dim h As Double Dim base As Double Dim rd As Double Dim pi As Double Dim Bs As Double Dim H2 As Double Dim l1 As Double Dim l2 As Double Dim l3 As Double Dim cb As Double Dim ld As Double Dim ld2 As Double Dim ld3 As Double Dim rd2 As Double Dim h3 As Double Dim hp As Double  Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click a = Val(TextBox1.Text) TextBox2.Text = a * a TextBox3.Text = a + a + a + a End Sub

Private Sub Button4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button4.Click h = Val(TextBox5.Text) base = Val(TextBox4.Text) TextBox6.Text = base * h TextBox7.Text = (2 * base) + (2 * h) End Sub  Private Sub Button5_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button5.Click rd = TextBox8.Text pi = 3.1415 TextBox9.Text = pi * (rd * rd) TextBox10.Text = 2 * rd * pi End Sub  Private Sub Button6_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button6.Click Bs = Val(TextBox11.Text) H2 = Val(TextBox12.Text) l1 = TextBox13.Text l2 = TextBox14.Text hp = Math.Sqrt(l1 ^ 2 + l2 ^ 2)

TextBox15.Text = (Bs * H2) / 2 TextBox16.Text = l1 + l2 + hp  End Sub  Private Sub Button7_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button7.Click cb = Val(TextBox17.Text) TextBox18.Text = 6 * (cb ^ 2) TextBox19.Text = cb ^ 3 End Sub  Private Sub Button8_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button8.Click ld = Val(TextBox20.Text) ld2 = Val(TextBox21.Text) ld3 = Val(TextBox22.Text) TextBox23.Text = 2 * (ld * ld2) + 2 * (ld2 * ld3) + 2 * (ld * ld3) TextBox24.Text = ld * ld2 * ld3 End Sub 

Private Sub Button9_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button9.Click  h3 = TextBox30.Text rd2 = TextBox25.Text pi = 3.1415 TextBox27.Text = 2 * pi * (rd2 * rd2) TextBox28.Text = 2 * pi * rd2 * h3 TextBox26.Text = 2 * rd2 * pi TextBox29.Text = pi * (rd2 * rd2) * h3  End SubEnd Class

TRANSFORMACION DE HORA A MINUTOS Y SEGUNDOS

Public Class Form1 Dim CV Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click CV = Val(TextBox1.Text) TextBox2.Text = CV * 60 TextBox3.Text = CV * 1300 End Sub  Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click TextBox1.Clear() TextBox2.Clear() TextBox3.Clear() End Sub  Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click End End SubEnd Class

PAR, INPAR

Public Class Form1 Dim residuo As Double Dim i As Double Dim r As Double Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click r = Val(TextBox1.Text) residuo = r Mod 2  If residuo = 1 Then TextBox2.Text = (r & " ES IMPAR ") Else TextBox2.Text = (r & " ES PAR ") End If End Sub Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click TextBox1.Clear() TextBox2.Clear() End Sub Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click EndEnd Class

PERIMETRO DEL TRIANGULO

Public Class Form1 Dim B As Double Dim A As Double Dim l1 As Double Dim l2 As Double Dim l3 As Double Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click B = Val(TextBox1.Text) A = Val(TextBox2.Text) l1 = Val(TextBox3.Text) l2 = Val(TextBox4.Text) l3 = Val(TextBox5.Text) TextBox6.Text = (B * A) / 2 TextBox7.Text = l1 + l2 + l3 End Sub  Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click TextBox1.Clear() TextBox2.Clear() TextBox3.Clear() TextBox4.Clear()

TextBox5.Clear() TextBox6.Clear() TextBox7.Clear()  End Sub  Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click End End SubEnd Class 

POSITIVO Y NEGATIVO

Public Class Form1 Dim R As Double

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click R = Val(TextBox1.Text) If (R > 0) Then TextBox2.Text = "POSITIVO" End If If (R < 0) Then TextBox2.Text = "NEGATIVO" End If End Sub Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click TextBox1.Clear() TextBox2.Clear() End Sub  Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click End End SubEnd Class

TABLA DE MULTIPLICAR

Public Class Form1 Dim TB As Double Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click TB = Val(TextBox37.Text) TextBox13.Text = TB TextBox14.Text = TB TextBox15.Text = TB TextBox16.Text = TB TextBox17.Text = TB TextBox18.Text = TB TextBox19.Text = TB TextBox20.Text = TB TextBox21.Text = TB TextBox22.Text = TB TextBox23.Text = TB TextBox24.Text = TB  TextBox25.Text = TB * TextBox1.Text TextBox26.Text = TB * TextBox2.Text TextBox27.Text = TB * TextBox3.Text TextBox28.Text = TB * TextBox4.Text TextBox29.Text = TB * TextBox5.Text TextBox30.Text = TB * TextBox6.Text

TextBox31.Text = TB * TextBox7.Text TextBox32.Text = TB * TextBox8.Text TextBox33.Text = TB * TextBox9.Text TextBox34.Text = TB * TextBox10.Text TextBox35.Text = TB * TextBox11.Text TextBox36.Text = TB * TextBox12.Text    End Sub  Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click TextBox13.Clear() TextBox14.Clear() TextBox15.Clear() TextBox16.Clear() TextBox17.Clear() TextBox18.Clear() TextBox19.Clear() TextBox20.Clear() TextBox21.Clear() TextBox22.Clear()

TextBox23.Clear() TextBox24.Clear() TextBox25.Clear() TextBox26.Clear() TextBox27.Clear() TextBox28.Clear() TextBox29.Clear() TextBox30.Clear() TextBox31.Clear() TextBox32.Clear() TextBox33.Clear() TextBox34.Clear() TextBox35.Clear() TextBox37.Clear() TextBox36.Clear() End Sub  Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click End End SubEnd Class

TRASFORMACION DE DIAS A HORAS

Public Class Form1 Dim CV As Double  Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click CV = Val(TextBox1.Text) TextBox2.Text = CV * 24 TextBox3.Text = CV * 1440 TextBox4.Text = CV * 86400 End Sub  Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click TextBox1.Clear() TextBox2.Clear() TextBox3.Clear() TextBox4.Clear() End Sub  Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click End End SubEnd Class

LAS CUATRO OPERACIONES

BASICAS

Public Class Form1  Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click TextBox3.Text = Val(TextBox2.Text) + Val(TextBox1.Text) End Sub  Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click TextBox3.Text = Val(TextBox2.Text) - Val(TextBox1.Text) End Sub  Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click TextBox3.Text = Val(TextBox2.Text) / Val(TextBox1.Text) End Sub  Private Sub Button4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button4.Click TextBox3.Text = Val(TextBox2.Text) * Val(TextBox1.Text) End Sub 

Private Sub Label2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Label2.Click  End Sub  Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load  End SubEnd Class

REALIZADO POR LENIN XAVIER TOAPANTA PAZMIÑO