XL98: No Data Validation Property for UserForm TextBoxes

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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:

1. Create a new workbook. Point to Macro on the Tools menu, and click Visual Basic Editor to start the Visual Basic Editor.
2. In the Visual Basic Editor, insert a new UserForm into your project.
3. If the Toolbox is not visible, click Toolbox on the View menu.
4. Click TextBox in the Toolbox, and then draw a text box on the UserForm.
5. Double-click the TextBox.
6. 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
   
                      ' Displays 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
   					

7. On the Insert menu, click Module.
   
   This step inserts a module sheet into the project.
8. On this module sheet, type the following code:

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

9. Run the Data_Validate macro.
   
   Your custom UserForm appears. If you type a number in the text box, 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.
10. Click the Close button in the upper-right corner of the UserForm window to dismiss the UserForm.