Thursday, October 3, 2019

Delete All Record in a database Table in Visual Basic 6


Here is a sample program that is being provided by my close friend, business partner and fellow software engineer Sir Larry Dave Emol. He created this program using Microsoft Visual Basic 6 and Microsoft Access to Delete All Record in a database Table in VB6. 

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Sample Program Output


Program Listing

FORM CODES

Private Sub Command3_Click()
On Error Resume Next
Call dbConn
conn.Execute "DELETE FROM tblInfo"
MsgBox "All information has been successfully deleted!", vbInformation
Call SQLDB(Me.AdoCon, "Select * from tblInfo order by LASTNAME Desc")
Set Me.DataGrid1.DataSource = Me.AdoCon
End Sub


Private Sub Form_Activate()
On Error Resume Next
Call SQLDB(Me.AdoCon, "Select * from tblInfo order by LASTNAME Desc")
Set Me.DataGrid1.DataSource = Me.AdoCon
End Sub

MODULE CODES

Option Explicit

'variables for ADODB
Public conn As New ADODB.Connection
Public ctr As Integer


Public Function AppDir() As String
    If Right$(App.Path, 1) = "\" Then
        AppDir = App.Path
    Else
        AppDir = App.Path & "\"
    End If
End Function

Public Sub dbConn()
  Set conn = New ADODB.Connection
  conn.ConnectionString = strConn2
  conn.Open
End Sub

Public Function strConn2() As String
  strConn2 = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & AppDir & "Tutorial.mdb;Persist Security Info=False;Jet OLEDB:Database Password = "
End Function

Public Sub SQLDB(adoObj As Adodc, AdoRec As String) 'for SQL Recordsource

    'Loads the database and provides the database password
    adoObj.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & AppDir & "Tutorial.mdb;Persist Security Info=False;Jet OLEDB:Database Password = "
    
    'Sets the command type to Table
    adoObj.CommandType = adCmdText
    
    'Loads the source table of info
    adoObj.RecordSource = AdoRec

    'refreshes database status
     adoObj.Refresh
End Sub






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