Answer to Question #253438 in Visual Basic for QWERTY

Question

VISUAL BASIC

Design and develop a simple application System that determine the most economical quantity to be stocked for each product that a manufacturing company has in its inventory this quantity called economics order quantity (EOQ) is calculated as following 

EOQ = sqrt (2RS/I)

Where 

R = total yearly Production Requirement 

S = Set up Cost per order

I = inventory carrying cost per unit 

Note: After the user enter the total year production Requirements (R) its set up cost per oder (S) and inventory carrying cost per unit (I) at text baxes 1,2 & 3 expectively the user should Click button (with a compute caption) before the resulting computed value will be displayed at the text box 4 

Use the Convert.TextString(Math.Eqrt(intNum1)); mathematical function to get the square root value

where intNum1 is the number of square root 

Answer 1

Public Class Form1
    ''' <summary>
    ''' Button Calculate
    ''' </summary>
    ''' <param name="sender"></param>
    ''' <param name="e"></param>
    ''' <remarks></remarks>
    Private Sub btnCalculate_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCalculate.Click
        Dim R As Double = Double.Parse(txtR.Text)
        Dim S As Integer = Integer.Parse(txtS.Text)
        Dim I As Double = Double.Parse(txtI.Text)
        Dim EOQ As Double = Math.Sqrt(2 * R * S / I)
        txtEOQ.Text = Convert.ToString(EOQ)
    End Sub
End Class

<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.btnCalculate = New System.Windows.Forms.Button()
        Me.Label4 = New System.Windows.Forms.Label()
        Me.Label3 = New System.Windows.Forms.Label()
        Me.Label2 = New System.Windows.Forms.Label()
        Me.Label1 = New System.Windows.Forms.Label()
        Me.txtEOQ = New System.Windows.Forms.TextBox()
        Me.txtI = New System.Windows.Forms.TextBox()
        Me.txtS = New System.Windows.Forms.TextBox()
        Me.txtR = New System.Windows.Forms.TextBox()
        Me.SuspendLayout()
        '
        'btnCalculate
        '
        Me.btnCalculate.Location = New System.Drawing.Point(260, 133)
        Me.btnCalculate.Name = "btnCalculate"
        Me.btnCalculate.Size = New System.Drawing.Size(100, 23)
        Me.btnCalculate.TabIndex = 11
        Me.btnCalculate.Text = "Calculate"
        Me.btnCalculate.UseVisualStyleBackColor = True
        '
        'Label4
        '
        Me.Label4.AutoSize = True
        Me.Label4.Location = New System.Drawing.Point(213, 99)
        Me.Label4.Name = "Label4"
        Me.Label4.Size = New System.Drawing.Size(33, 13)
        Me.Label4.TabIndex = 8
        Me.Label4.Text = "EOQ:"
        '
        'Label3
        '
        Me.Label3.AutoSize = True
        Me.Label3.Location = New System.Drawing.Point(52, 73)
        Me.Label3.Name = "Label3"
        Me.Label3.Size = New System.Drawing.Size(194, 13)
        Me.Label3.TabIndex = 9
        Me.Label3.Text = "Enter inventory carrying cost per unit (I):"
        '
        'Label2
        '
        Me.Label2.AutoSize = True
        Me.Label2.Location = New System.Drawing.Point(92, 47)
        Me.Label2.Name = "Label2"
        Me.Label2.Size = New System.Drawing.Size(154, 13)
        Me.Label2.TabIndex = 10
        Me.Label2.Text = "Enter Set up Cost per order (S):"
        '
        'Label1
        '
        Me.Label1.AutoSize = True
        Me.Label1.Location = New System.Drawing.Point(27, 21)
        Me.Label1.Name = "Label1"
        Me.Label1.Size = New System.Drawing.Size(219, 13)
        Me.Label1.TabIndex = 7
        Me.Label1.Text = "Enter total yearly Production Requirement(R):"
        '
        'txtEOQ
        '
        Me.txtEOQ.Location = New System.Drawing.Point(260, 96)
        Me.txtEOQ.Name = "txtEOQ"
        Me.txtEOQ.ReadOnly = True
        Me.txtEOQ.Size = New System.Drawing.Size(100, 20)
        Me.txtEOQ.TabIndex = 4
        '
        'txtI
        '
        Me.txtI.Location = New System.Drawing.Point(260, 70)
        Me.txtI.Name = "txtI"
        Me.txtI.Size = New System.Drawing.Size(100, 20)
        Me.txtI.TabIndex = 3
        '
        'txtS
        '
        Me.txtS.Location = New System.Drawing.Point(260, 44)
        Me.txtS.Name = "txtS"
        Me.txtS.Size = New System.Drawing.Size(100, 20)
        Me.txtS.TabIndex = 6
        '
        'txtR
        '
        Me.txtR.Location = New System.Drawing.Point(260, 18)
        Me.txtR.Name = "txtR"
        Me.txtR.Size = New System.Drawing.Size(100, 20)
        Me.txtR.TabIndex = 5
        '
        'Form1
        '
        Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 13.0!)
        Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font
        Me.ClientSize = New System.Drawing.Size(397, 175)
        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.txtEOQ)
        Me.Controls.Add(Me.txtI)
        Me.Controls.Add(Me.txtS)
        Me.Controls.Add(Me.txtR)
        Me.Name = "Form1"
        Me.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen
        Me.Text = "EOQ"
        Me.ResumeLayout(False)
        Me.PerformLayout()

    End Sub
    Friend WithEvents btnCalculate As System.Windows.Forms.Button
    Friend WithEvents Label4 As System.Windows.Forms.Label
    Friend WithEvents Label3 As System.Windows.Forms.Label
    Friend WithEvents Label2 As System.Windows.Forms.Label
    Friend WithEvents Label1 As System.Windows.Forms.Label
    Friend WithEvents txtEOQ As System.Windows.Forms.TextBox
    Friend WithEvents txtI As System.Windows.Forms.TextBox
    Friend WithEvents txtS As System.Windows.Forms.TextBox
    Friend WithEvents txtR As System.Windows.Forms.TextBox

End Class