1 Imports System.IO
2 Imports System.Security.Cryptography
3 Imports System.Text
4 Public Class frmPayment
5
6 #Region "Controlbox"
7
8 Private Sub btnClose_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnClose.Click
9 Me.Close()
10 LstOrder.Items.Clear()
11 txtAmount.Clear()
12 txtCash.Text = "0.00"
13 txtChange.Text = "0.00"
14 End Sub
15
16 #End Region
17
18 Public Shared Function GetUniqueKey(ByVal maxSize As Integer) As String
19 Dim chars As Char() = New Char(61) {}
20 chars = "123456789".ToCharArray()
21 Dim data As Byte() = New Byte(0) {}
22 Dim crypto As New RNGCryptoServiceProvider()
23 crypto.GetNonZeroBytes(data)
24 data = New Byte(maxSize - 1) {}
25 crypto.GetNonZeroBytes(data)
26 Dim result As New StringBuilder(maxSize)
27 For Each b As Byte In data
28 result.Append(chars(b Mod (chars.Length)))
29 Next
30 Return result.ToString()
31 End Function
32
33 Private Sub txtCash_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles txtCash.TextChanged
34 txtChange.Text = Format(Val(txtCash.Text) - Val(txtAmount.Text), "###,##0.00")
35 End Sub
36
37 Private Sub BtnDone_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BtnDone.Click
38 If Val(txtAmount.Text) > Val(txtCash.Text) Then
39 MessageBox.Show("Please Enter cash value higher than the total amount.", "Invalid Cash", MessageBoxButtons.OK, MessageBoxIcon.Error)
40 Else
41 Dim prodname As String = ""
42 'If frmMenu.prod.StartsWith(",") = True Then
43 ' prodname = frmMenu.prod.Remove(0, 1)
44 'End If
45 For i = 0 To Me.LstOrder.Items.Count - 1
46 prodname = prodname & "," & LstOrder.Items(i).ToString.Replace("& vbcrlf", "")
47 Next i
48 If prodname.StartsWith(",") = True Then
49 prodname = prodname.Remove(0, 1)
50 End If
51 Dim trpath As String = Application.StartupPath & "\Record\Record.txt"
52 File.AppendAllText(trpath, ReceiptNo.Text & " | " & Format(Date.Now, "MM/dd/yyyy") & " | " & prodname.Trim & " | " & txtAmount.Text & " | " & Format(Val(txtCash.Text), "###,###.00") & " | " & txtChange.Text & vbCrLf)
53 With frmReceipt
54 For i = 0 To Me.LstOrder.Items.Count - 1
55 .LstOrder.Items.Add(LstOrder.Items(i))
56 Next i
57 .ReceiptNo.Text = Me.ReceiptNo.Text
58 .lblTotal.Text = Me.txtAmount.Text
59 .lblCash.Text = Me.txtCash.Text
60 .lblChange.Text = Me.txtChange.Text
61 .ShowDialog()
62 End With
63 prodname = ""
64 btnClose_Click(sender, e)
65 frmMenu.BtnClear_Click(sender, e)
66 frmMenu.dtgRecord.Rows.Clear()
67 frmMenu.Filter_Record()
68 End If
69 End Sub
70
71 Private Sub frmPayment_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
72 ReceiptNo.Text = "BURGER-" & GetUniqueKey(6)
73 End Sub
74 End Class
