Private Sub Form_Load()
Adodc1.ConnectionString = "provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\demo\pop.mdb;Persist Security Info=False"
Adodc1.RecordSource = "select * from pop
Set Text1.DataSource = Adodc1
Set Text2.DataSource = Adodc1
End Sub
Private Sub Command1_Click()
On Error Resume Next
Adodc1.Recordset.AddNew
With Adodc1.Recordset
.Fields(0) = Text1.Text
.Fields(1) = Text2.Text
End With
Adodc1.Recordset.Save
Adodc1.Recordset.Close
End Sub
fibonacci series in visual basic
Dim i, f1, f2, f3, n As Integer
Private Sub Command1_Click()
n = Text1.Text
i = 3
While (i <= n)
f3 = f1 + f2
f1 = f2
f2 = f3
Next
Print f3
End Sub
Visual Basic connectivity data grid
Dim x As Integer
Private Sub Command1_Click()
x = Text1.Text
Data1.RecordSource = "select * from employees where EmployeeID =" & x
Data1.Refresh
End Sub
Visual basic Database connectivity with Oracle
Dim sql As String
Dim rs1 As New Adodb.Recordset
Dim cn As New Adodb.Connection
Private Sub Command1_Click()
rs1.AddNew
rs1.Fields("rno").Value = Text1.Text
rs1.Fields("name").Value = Text2.Text
rs1.Update
End Sub
Private Sub Form_Load()
Set rs1 = New Adodb.Recordset
cn = New Adodb.Connection
cn.CursorLocation = adUseClient
cn.Open "provider=msdaora.1;", "scott", "tiger"
sql = "select * from pop"
rs1.Open sql, cn, adOpenDynamic, adLockOptimistic
End Sub
Dim rs1 As New Adodb.Recordset
Dim cn As New Adodb.Connection
Private Sub Command1_Click()
rs1.AddNew
rs1.Fields("rno").Value = Text1.Text
rs1.Fields("name").Value = Text2.Text
rs1.Update
End Sub
Private Sub Form_Load()
Set rs1 = New Adodb.Recordset
cn = New Adodb.Connection
cn.CursorLocation = adUseClient
cn.Open "provider=msdaora.1;", "scott", "tiger"
sql = "select * from pop"
rs1.Open sql, cn, adOpenDynamic, adLockOptimistic
End Sub
creating popup menu in vb6, right click menu in vb6
Private Sub Form_MouseUp(Button As Integer, Shift As _
Integer, X As Single, Y As Single)
If Button = 2 Then
PopupMenu mnuFile
End If
End Sub
Integer, X As Single, Y As Single)
If Button = 2 Then
PopupMenu mnuFile
End If
End Sub
MSFLEX in visual basic
Public cn As ADODB.Connection
Public rs As ADODB.Recordset
Private Sub Command1_Click()
MS.Rows = 1
Text3.Text = ""
Dim cmd As ADODB.Command
Dim cmdtxt As String
cmdtxt = ""
Me.MousePointer = vbHourglass
Set cn = New ADODB.Connection
cn.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=pop.mdb;Persist Security Info=False"
cn.Open
Set rs = New ADODB.Recordset
rs.CursorLocation = adUseClient
rs.CursorType = adOpenStatic
Set cmd = New ADODB.Command
cmd.CommandType = adCmdText
Set cmd.ActiveConnection = cn
If Option1.Value = True Then
cmdtxt = "Select * from abc where name=" & "'" & Text1.Text + "'" + " order by rno"
Else
If Option2.Value = True Then
cmdtxt = "Select * from abc where rno=" & "'" & Text1.Text + "'" + " order by rno"
End If
End If
cmd.CommandText = cmdtxt
cmd.Prepared = True
Set rs = cmd.Execute
Me.MousePointer = 0
''''''''''''''''''''''''''
Dim r As Integer
r = 1
''''''''''''''''''''''''''Code For entering Data in MSFLEXgrid
Do While Not Me.rs.EOF
MS.AddItem Me.rs.Fields("RNO").Value
MS.Row = r
MS.Col = 1
MS.Text = Me.rs.Fields("name").Value
'MS.Col = 2
r = r + 1
Me.rs.MoveNext
Loop
''''''''''''''
Text3.Text = r - 1
Command2.Enabled = False
If Text3.Text = 0 Then MsgBox "not found"
End Sub
Public rs As ADODB.Recordset
Private Sub Command1_Click()
MS.Rows = 1
Text3.Text = ""
Dim cmd As ADODB.Command
Dim cmdtxt As String
cmdtxt = ""
Me.MousePointer = vbHourglass
Set cn = New ADODB.Connection
cn.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=pop.mdb;Persist Security Info=False"
cn.Open
Set rs = New ADODB.Recordset
rs.CursorLocation = adUseClient
rs.CursorType = adOpenStatic
Set cmd = New ADODB.Command
cmd.CommandType = adCmdText
Set cmd.ActiveConnection = cn
If Option1.Value = True Then
cmdtxt = "Select * from abc where name=" & "'" & Text1.Text + "'" + " order by rno"
Else
If Option2.Value = True Then
cmdtxt = "Select * from abc where rno=" & "'" & Text1.Text + "'" + " order by rno"
End If
End If
cmd.CommandText = cmdtxt
cmd.Prepared = True
Set rs = cmd.Execute
Me.MousePointer = 0
''''''''''''''''''''''''''
Dim r As Integer
r = 1
''''''''''''''''''''''''''Code For entering Data in MSFLEXgrid
Do While Not Me.rs.EOF
MS.AddItem Me.rs.Fields("RNO").Value
MS.Row = r
MS.Col = 1
MS.Text = Me.rs.Fields("name").Value
'MS.Col = 2
r = r + 1
Me.rs.MoveNext
Loop
''''''''''''''
Text3.Text = r - 1
Command2.Enabled = False
If Text3.Text = 0 Then MsgBox "not found"
End Sub
InputBox in vb6
Private Sub Command1_Click()
stranswer = InputBox("what is ur name", "get name")
If (stranswer = "pop") Then
MsgBox "hello " + stranswer
Else
MsgBox stranswer + " Shut up!"
End If
End Sub
Area of circle vb tutor.
Dim r, b, pi As Integer
Private Sub Command1_Click()
pi = 3.14
r = Text1.Text
b = pi * (r * r)
Label2.Caption = "The Area is " & b
End Sub
Private Sub Command3_Click()
Text1.Text = ""
Label2.Caption = ""
End Sub
Private Sub Command1_Click()
pi = 3.14
r = Text1.Text
b = pi * (r * r)
Label2.Caption = "The Area is " & b
End Sub
Private Sub Command3_Click()
Text1.Text = ""
Label2.Caption = ""
End Sub
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Visual Basic-6 has emerged as one of the standard Windows Programming Language and it has become a must for all Software people for developing Applications in Visual Environment. So it is, one must learn Visual Basic-6.
What is our Objective in this Courseware?
The Overall Objective in this Courseware is to give a Hands-on Approach to develop different projects in Visual Basic-6.0 using intrinsic, professional and user–created ActiveX controls and also develop projects using databases, DAO’s, ADO’s, DLL’s, Documents, Crystal Reports etc. covering almost all the essential features of VB-6 Professional Edition. After reading one lesson any interested reader will be able to get complete hands-on experience with the VB project and get a sense of fulfilment and achievement. Learning by doing is the motto with which this courseware is written. After giving a short introduction about VB-6 we will explain how to create and execute a project in VB using some intrinsic ActiveX controls. Creating and executing projects will be the central theme of all the lessons which we will be giving in this courseware.
What is Visual Basic-6?
Visual Basic-6 has its origin in Basic which was developed round about the year 1960, when high level languages were just being introduced to the computer community. Microsoft has made it extremely powerful by gearing all its good features to the Windows environment. Starting with the version 3 and then with 4, and then with 6, Visual Basic is now at version 6. Basic is a Procedure Oriented Language intended to implement single tasks in text based environment whereas Visual Basic is an Event Driven Language intended to implement Projects or Applications containing multiple tasks in Windows Environment.
What can Visual Basic do for you?
Visual Basic can serve as an ideal front end tool for the clients to interact. It has got connectivity mechanisms for all types of databases situated far and wide in a network and so it can cater to the needs of a large body of clients. Using the latest ActiveX technologies, it can integrate the functionalities provided by other applications like Word Excel and other Windows. Its internet capabilities provide easy access to documents and applications across the internet. Above all it embodies the Object Oriented Technology, which is the cutting edge technology for all the present day developments in the Software World. The final application is a true EXE file and so can be freely distributed.
Structure of VB-6 Projects:
We said earlier that VB-6 implements projects or applications. A project is developed using one or more Forms. A Form is simply a window containing one or more Controls. Controls in VB consist of labels, text boxes, list boxes, combo boxes, scroll bars etc. which are the constituents of windows environment. It is only the controls that give VB, its immense power and so there is a lot of interest in creating more and more powerful controls. ActiveX controls mark a significant development in controls technology. In fact all controls in VB-6 are ActiveX controls, which have the extension .ocx. These controls have properties whose values can be initialized at design time and also varied during run time. The properties are something like variables. The controls are activated by codes written in a high level language. By associating our problem variables with the properties of the controls, our problem variables can be manipulated to give the problem solution. In summary we can say that a VB project is made of forms, controls and their properties and codes.
Integrated Development Environment:
The working environment in VB is often referred to as the Integrated Development Environment or IDE, because it integrates many different functions such as design, editing, compiling and debugging within a common environment. Since all our projects are developed only in the IDE, let us now have a brief look at its features. You will be able to understand their uses at the time of building projects. The VB IDE looks as shown in the figure.
