MOD2000: How to Use the ProgressBar ActiveX Control

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Article ID: 283030 - View products that this article applies to.
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SUMMARY

Advanced: Requires expert coding, interoperability, and multiuser skills.

You can use the Microsoft ProgressBar control to show the progress of an operation toward completion. A ProgressBar control has a range and a current position. This article demonstrates how you can use the Max, Min, and Value properties of the ProgressBar control in a Microsoft Access 2000 database.

This article assumes that you are familiar with Visual Basic for Applications and with creating Microsoft Access applications using the programming tools provided with Microsoft Access.

MORE INFORMATION

  1. Start Microsoft Access 2000, and then open any database.
  2. In the Database window, click the Forms tab, and then click New to create a new form that is not based on any table or query.
  3. On the File menu, click Save As, and then save the form as frmProgressBar.
  4. Add three unbound text boxes to the frmProgressBar form, and then set their properties as follows:
           Name: txtMin
           Default Value: 10
           Validation Rule: Is Not Null
           Validation Text: Please Enter a Numerical Value
    
           Name: txtMax
           Default Value: 5000
           Validation Rule: Is Not Null
           Validation Text: Please Enter a Numerical Value
    
           Name: txtStep
           Default Value: 10
           Validation Rule: Is Not Null
           Validation Text: Please Enter a Numerical Value
    					
  5. On the Insert menu, click ActiveX Control, and then insert the Microsoft ProgressBar Control, version 5.0. Set its properties as follows:
           Name: CtlProgress
           Width: 1.95
           Height: .15
    					
  6. Add two command buttons, and then set their properties as follows:
           Name: cmdRun
           Caption: Run
    
           Name: cmdClear
           Caption: Clear
    					
  7. Insert a label, and then set its properties as follows:
           Name: lblComplete
           Caption: 0% Complete
           Visible: No
    					
  8. Right-click the Run command button, and then click Build Event on the menu that appears.
  9. In the Choose Builder dialog box, click Code Builder, and then click OK.
  10. Type the following event procedure in the module window:
       Private Sub cmdRun_Click()
    
          Dim prg As ProgressBar
          Dim IntValue As Long
          Dim fmin As TextBox, fmax As TextBox, fstep As TextBox
          Dim strComplete As String
          Dim Complete As Label
    
          Set fmin = Forms!frmProgressBar!txtMin
          Set fmax = Forms!frmProgressBar!txtMax
          Set fstep = Forms!frmProgressBar!txtStep
          Set prg = Me!CtlProgress.Object
          Set Complete = Me!lblComplete
    
          ' If the txtMin textbox contains a non-numeric value
          ' or a number less than 0, force the user to
          ' re-enter data in correct format.
    
          If Val(fmin) <= 0 Then
             MsgBox "Please enter a positive numerical value above 0 " & _
                "in the Minimum text box."
             fmin = Null
             fmin.SetFocus
             Exit Sub
          End If
    
          ' If the txtMax text box contains a non-numeric
          ' value or a number less than the value in txtMin,
          ' force the user to re-enter data in correct format.
    
          If Val(fmax) <= 0 Or Val(fmax) <= fmin Then
             MsgBox "Please enter a positive numerical value above " & _
                fmin & " in the  Maximum textbox."
             fmax = Null
             fmax.SetFocus
             Exit Sub
          End If
    
          ' If txtStep contains a non-numeric value or a number less
          ' than 1, force the user to re-enter data in correct format.
    
          If Val(fstep) < 1 Then
             MsgBox "Please enter a number less than or equal " & _
                "to 1 in the Step text box."
             fstep = Null
             fstep.SetFocus
             Exit Sub
          End If
    
          ' The maximum value for the MAX property of a progress bar
          ' is 10,000; if the number entered in txtMax is over 10,000,
          ' set the MAX property to 10,000. Otherwise, set the MAX
          ' property to whatever the user has entered.
    
          If fmax > 10000 Then
             prg.Max = 10000
          Else
             prg.Max = fmax
          End If
    
          ' The maximum value for the MIN property of a progress bar
          ' is also 10,000; if the number entered in txtMin is
          ' greater than 10,000, set the MIN property to 9,999
          ' so it is still less than the MAX property. Otherwise,
          ' set the MIN property to whatever the user has entered.
    
          If fmin > 10000 Then
             prg.Min = 9999
          Else
             prg.Min = fmin
          End If
    
              IntValue = fmin
    
          ' Increment the progress bar and % complete label as long as the
          ' Value assigned to it is less than or equal to the MAX property
          ' of the progress bar.
    
          Complete.Visible = True
    
          Do
             IntValue = IntValue + Me!txtStep
             If IntValue >= prg.Max Then
                IntValue = prg.Max
             End If
             prg.Value = IntValue
             strComplete = Format((prg.Value / prg.Max) * 100, "##") & _
                  " % Complete"
             Complete.Caption = strComplete
             DoCmd.RepaintObject
          Loop While IntValue < prg.Max
    
       End Sub
    					
  11. Right-click the Clear command button, and then click Build Event on the menu that appears.
  12. In the Choose Builder dialog box, click Code Builder, and then click OK.
  13. Type the following event procedure in the module window:
       Private Sub cmdClear_Click()
    
           Dim prg As ProgressBar
           Dim Complete As Label
    
           Set prg = Me!CtlProgress.Object
           Set Complete = Me!lblComplete
    
           ' Clear the Progress Bar by setting its value to the
           ' Control's MIN property; then hide the Complete label.
    
           prg.Value = prg.Min
           Complete.Visible = False
    
        End Sub
    					
  14. On the Debug menu, click Compile Loaded Modules.
  15. Save the form, and then switch the form to Form view.
  16. Click Run. Note that the ProgressBar fills while the label control shows the progress as a percentage.

REFERENCES

For more information about the ProgressBar ActiveX control, search the Help Index for "ProgressBar Control."

Properties

Article ID: 283030 - Last Review: August 9, 2001 - Revision: 1.1
APPLIES TO
  • Microsoft Office 2000 Developer Edition
Keywords: 
kbhowto KB283030

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