XL2000: No Data Validation Property for UserForm TextBoxes

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This article was previously published under Q213555

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SYMPTOMS

When you add a TextBox control to a custom UserForm, you cannot use a property to automatically validate the data that is typed in the TextBox when you run a macro that displays the UserForm.

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CAUSE

In Microsoft Excel 2000, you cannot use a property that allows you to validate the data. This behavior is different from versions of Microsoft Excel earlier than Excel 97. In earlier versions, you can set the InputType property for an Edit Box control that you place in a custom dialog box.

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RESOLUTION

To validate the data that is typed in a TextBox on a custom UserForm, create an event-driven macro that verifies the data. Please see the "More Information" section in this article for an example that shows you how to implement such a macro.

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MORE INFORMATION

Microsoft provides programming examples for illustration only, without warranty either expressed or implied. This includes, but is not limited to, the implied warranties of merchantability or fitness for a particular purpose. This article assumes that you are familiar with the programming language that is being demonstrated and with the tools that are used to create and to debug procedures. Microsoft support engineers can help explain the functionality of a particular procedure, but they will not modify these examples to provide added functionality or construct procedures to meet your specific requirements. The following example guides you through the process of creating a new UserForm with a TextBox control that allows you to type only numerical values in the TextBox. If you type nonnumeric data in the TextBox, a message box that prompts you to reenter the data or to cancel the procedure appears. To create the UserForm:

Create a new workbook. On the Tools menu, point to Macro and then click Visual Basic Editor (or press ALT+F11).
In the Visual Basic Editor, click UserForm on the Insert menu to insert a new UserForm into your project.
If the Toolbox is not visible, click Toolbox on the View menu.
Click the TextBox control in the Toolbox, and then draw a TextBox on the UserForm.
Double-click the TextBox.

Type the following code in this Visual Basic module:

       Private Sub TextBox1_Change()

           Dim okstop As Boolean
           Dim yesno_continue As Boolean
           Dim mytext As String

           okstop = False

           Do
               mytext = TextBox1.Value
               If Not IsNumeric(mytext) And mytext <> "" Then
                   TextBox1.Value = ""    'Clears the TextBox

                   'Shows a message box that informs you that you typed
                   'something other than a number.
                   yesno_continue = MsgBox("Please type only numbers." & _
                       Chr(13) & "Continue?", vbYesNo)
               Else
                   okstop = True   'You typed a number in the TextBox.
               End If

           'Continue with the loop if you click Yes.
           'Stop the loop if they typed a number in the TextBox.
           Loop Until (yesno_continue = vbNo) Or (okstop = True)

       End Sub

On the Insert menu, click Module to insert a module sheet into the project.

On this module sheet, type the following code:

       Sub Data_Validate()
           UserForm1.Show  'Displays the custom UserForm.
       End Sub

Run the Data_Validate macro. Your custom UserForm appears. If you type a number in the TextBox, nothing happens. If you type a text string in the TextBox, the message box in the macro in step 6 appears, informing you that you did not type a number.
Click the Close button in the upper-right corner of the UserForm window to dismiss the UserForm.

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REFERENCES

For more information about TextBoxes, in the Visual Basic Editor, click Microsoft Visual Basic Help on the Help menu, type TextBox Control in the Office Assistant or the Answer Wizard, and then click Search to view the topic.

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