Answer to Question #253075 in Visual Basic for Love

Question

Design and develop a simple application system that computes the Depreciation Cost of Item (D) takes as input the purchase. Price of an Item (P) its expected number of year of service (S) and yearly Depreciation of the Item (Y)

Use the formula D=P-S/Y. 

Note : 

After the user enter the Purchase Price of an item (P) its expected number of year of Service (S) and yearly depreciation for the item (Y) at text boxes 1,2 and 3 the user should Click button (with a compute caption) before the resulting computed value will be displayed at the text box 4 

Answer 1

<Global.Microsoft.VisualBasic.CompilerServices.DesignerGenerated()> _
Partial Class Form1
    Inherits System.Windows.Forms.Form

    'Form overrides dispose to clean up the component list.
    <System.Diagnostics.DebuggerNonUserCode()> _
    Protected Overrides Sub Dispose(ByVal disposing As Boolean)
        Try
            If disposing AndAlso components IsNot Nothing Then
                components.Dispose()
            End If
        Finally
            MyBase.Dispose(disposing)
        End Try
    End Sub

    'Required by the Windows Form Designer
    Private components As System.ComponentModel.IContainer

    'NOTE: The following procedure is required by the Windows Form Designer
    'It can be modified using the Windows Form Designer.  
    'Do not modify it using the code editor.
    <System.Diagnostics.DebuggerStepThrough()> _
    Private Sub InitializeComponent()
        Me.txtP = New System.Windows.Forms.TextBox()
        Me.Label1 = New System.Windows.Forms.Label()
        Me.btnCalculate = New System.Windows.Forms.Button()
        Me.txtS = New System.Windows.Forms.TextBox()
        Me.Label2 = New System.Windows.Forms.Label()
        Me.txtY = New System.Windows.Forms.TextBox()
        Me.Label3 = New System.Windows.Forms.Label()
        Me.txtD = New System.Windows.Forms.TextBox()
        Me.Label4 = New System.Windows.Forms.Label()
        Me.SuspendLayout()
        '
        'txtP
        '
        Me.txtP.Location = New System.Drawing.Point(253, 17)
        Me.txtP.Name = "txtP"
        Me.txtP.Size = New System.Drawing.Size(100, 20)
        Me.txtP.TabIndex = 0
        '
        'Label1
        '
        Me.Label1.AutoSize = True
        Me.Label1.Location = New System.Drawing.Point(104, 20)
        Me.Label1.Name = "Label1"
        Me.Label1.Size = New System.Drawing.Size(127, 13)
        Me.Label1.TabIndex = 1
        Me.Label1.Text = "Enter price of an Item (P):"
        '
        'btnCalculate
        '
        Me.btnCalculate.Location = New System.Drawing.Point(253, 132)
        Me.btnCalculate.Name = "btnCalculate"
        Me.btnCalculate.Size = New System.Drawing.Size(100, 23)
        Me.btnCalculate.TabIndex = 2
        Me.btnCalculate.Text = "Calculate"
        Me.btnCalculate.UseVisualStyleBackColor = True
        '
        'txtS
        '
        Me.txtS.Location = New System.Drawing.Point(253, 43)
        Me.txtS.Name = "txtS"
        Me.txtS.Size = New System.Drawing.Size(100, 20)
        Me.txtS.TabIndex = 0
        '
        'Label2
        '
        Me.Label2.AutoSize = True
        Me.Label2.Location = New System.Drawing.Point(11, 46)
        Me.Label2.Name = "Label2"
        Me.Label2.Size = New System.Drawing.Size(220, 13)
        Me.Label2.TabIndex = 1
        Me.Label2.Text = "Enter expected number of year of service (S):"
        '
        'txtY
        '
        Me.txtY.Location = New System.Drawing.Point(253, 69)
        Me.txtY.Name = "txtY"
        Me.txtY.Size = New System.Drawing.Size(100, 20)
        Me.txtY.TabIndex = 0
        '
        'Label3
        '
        Me.Label3.AutoSize = True
        Me.Label3.Location = New System.Drawing.Point(34, 76)
        Me.Label3.Name = "Label3"
        Me.Label3.Size = New System.Drawing.Size(197, 13)
        Me.Label3.TabIndex = 1
        Me.Label3.Text = "Enter yearly Depreciation of the Item (Y):"
        '
        'txtD
        '
        Me.txtD.Location = New System.Drawing.Point(253, 95)
        Me.txtD.Name = "txtD"
        Me.txtD.ReadOnly = True
        Me.txtD.Size = New System.Drawing.Size(100, 20)
        Me.txtD.TabIndex = 0
        '
        'Label4
        '
        Me.Label4.AutoSize = True
        Me.Label4.Location = New System.Drawing.Point(66, 102)
        Me.Label4.Name = "Label4"
        Me.Label4.Size = New System.Drawing.Size(165, 13)
        Me.Label4.TabIndex = 1
        Me.Label4.Text = "The depreciation cost of Item (D):"
        '
        'Form1
        '
        Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 13.0!)
        Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font
        Me.ClientSize = New System.Drawing.Size(391, 177)
        Me.Controls.Add(Me.btnCalculate)
        Me.Controls.Add(Me.Label4)
        Me.Controls.Add(Me.Label3)
        Me.Controls.Add(Me.Label2)
        Me.Controls.Add(Me.Label1)
        Me.Controls.Add(Me.txtD)
        Me.Controls.Add(Me.txtY)
        Me.Controls.Add(Me.txtS)
        Me.Controls.Add(Me.txtP)
        Me.Name = "Form1"
        Me.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen
        Me.Text = "Depreciation Cost"
        Me.ResumeLayout(False)
        Me.PerformLayout()

    End Sub
    Friend WithEvents txtP As System.Windows.Forms.TextBox
    Friend WithEvents Label1 As System.Windows.Forms.Label
    Friend WithEvents btnCalculate As System.Windows.Forms.Button
    Friend WithEvents txtS As System.Windows.Forms.TextBox
    Friend WithEvents Label2 As System.Windows.Forms.Label
    Friend WithEvents txtY As System.Windows.Forms.TextBox
    Friend WithEvents Label3 As System.Windows.Forms.Label
    Friend WithEvents txtD As System.Windows.Forms.TextBox
    Friend WithEvents Label4 As System.Windows.Forms.Label

End Class

Public Class Form1


    Private Sub btnCalculate_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCalculate.Click
        Dim P As Double = Double.Parse(txtP.Text)
        Dim S As Integer = Integer.Parse(txtS.Text)
        Dim Y As Double = Double.Parse(txtY.Text)
        Dim D As Double = P - S / Y
        txtD.Text = D.ToString()
    End Sub
End Class