Calculator (Standard & Scientific)
' Form Code (frmStudent.frm) Private Sub Form_Load() Call ConnectDB Call RefreshGrid End Sub Private Sub cmdSave_Click() If txtName.Text = "" Or txtCourse.Text = "" Then MsgBox "Please fill in all required fields.", vbExclamation, "Validation Error" Exit Sub End If Set rs = New ADODB.Recordset rs.Open "SELECT * FROM Students WHERE StudentID = '" & txtID.Text & "'", conn, adOpenDynamic, adLockOptimistic If rs.EOF Then rs.AddNew rs!StudentID = txtID.Text End If rs!StudentName = txtName.Text rs!Course = txtCourse.Text rs.Update MsgBox "Record saved successfully!", vbInformation, "Success" rs.Close Call RefreshGrid End Sub Private Sub RefreshGrid() ' Logic to load data from Recordset into a Microsoft FlexGrid Control End Sub Use code with caution. 3. Advanced Level: Inventory and Billing Software
Source code review: A comprehensive guide to secure development - Sonar visual basic 60 projects with source code
Private Sub Form_Load() Call ConnectDatabase Call RefreshGrid End Sub Private Sub cmdSave_Click() Dim strSQL As String ' Simple validation If txtID.Text = "" Or txtFirstName.Text = "" Then MsgBox "Please fill in all mandatory fields.", vbExclamation, "Validation" Exit Sub End If strSQL = "INSERT INTO Students (StudentID, FirstName, LastName, Course, EnrollmentDate) " & _ "VALUES ('" & txtID.Text & "', '" & txtFirstName.Text & "', '" & _ txtLastName.Text & "', '" & txtCourse.Text & "', #" & Format(Now, "yyyy-mm-dd") & "#)" conn.Execute strSQL MsgBox "Student record saved successfully!", vbInformation, "Success" Call RefreshGrid Call ClearFields End Sub Private Sub RefreshGrid() Set rs = New ADODB.Recordset rs.Open "SELECT * FROM Students ORDER BY StudentID DESC", conn, adOpenStatic, adLockReadOnly ' Bind data to a classic Microsoft FlexGrid control named MSFlexGrid1 Set MSFlexGrid1.DataSource = rs End Sub Private Sub Form_Unload(Cancel As Integer) Call CloseDatabase End Sub Use code with caution. 3. Advanced Project: Real-Time Chat Application (TCP/IP)
Before diving into the projects, it is important to understand the context of VB6 in the modern programming landscape. VB6 was designed for the Win32 API, and its runtime was last supported in Windows 10. However, a passionate developer community remains. Websites like SourceForge and GitHub still host thousands of active VB6 repositories. For new programmers, studying VB6 code is beneficial because it forces you to think procedurally before moving to object-oriented languages. For legacy developers, maintaining and upgrading VB6 applications is a highly sought-after (and increasingly rare) skill. Calculator (Standard & Scientific) ' Form Code (frmStudent
Private Sub mnuSave_Click() CommonDialog1.Filter = "Text Files|*.txt" CommonDialog1.ShowSave Open CommonDialog1.FileName For Output As #1 Print #1, txtEditor.Text Close #1 End Sub
Dim conn As New ADODB.Connection Dim rs As New ADODB.Recordset Private Sub Form_Load() conn.Open "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & App.Path & "\student.mdb" rs.Open "SELECT * FROM Students", conn, adOpenStatic, adLockOptimistic End Sub Use code with caution. 2. Classic Snake Game However, a passionate developer community remains
File Input/Output (I/O) streams, dialog filters. Source Code Logic Snippet:
Manages patient records, doctor appointments, and billing.