VBA: How to handle variable data types dynamically in a UserForm based on user selection?
I'm optimizing some code but I'm currently working on a UserForm in Excel VBA that requires the ability to dynamically handle different data types based on user selections. The UserForm includes a ComboBox where users can select between integers, strings, and dates, and I want to adjust the input fields accordingly. I've defined a ComboBox called `cmbDataType` for the user to choose a data type and a TextBox named `txtInput` for them to enter their value. Depending on the selection, I want to ensure that the input is validated correctly according to the data type chosen. For instance, if the user selects 'Integer', the input should only accept numeric values. If 'Date' is selected, it should only accept valid date formats. Here's a simplified version of what I've implemented: ```vba Private Sub cmbDataType_Change() Select Case cmbDataType.Value Case "Integer" txtInput.Text = "" txtInput.MaxLength = 10 ' Just for example purposes Case "String" txtInput.Text = "" txtInput.MaxLength = 255 Case "Date" txtInput.Text = "" txtInput.MaxLength = 10 ' Expecting a date format like dd/mm/yyyy Case Else txtInput.Text = "" End Select End Sub Private Sub txtInput_BeforeUpdate(ByVal Cancel As MSForms.ReturnBoolean) Select Case cmbDataType.Value Case "Integer" If Not IsNumeric(txtInput.Text) Then MsgBox "Please enter a valid integer.", vbExclamation Cancel = True End If Case "Date" If Not IsDate(txtInput.Text) Then MsgBox "Please enter a valid date in the format dd/mm/yyyy.", vbExclamation Cancel = True End If End Select End Sub ``` I've tested this code, and it works for the most part; however, when entering a date in the `txtInput`, it doesn't seem to allow for a valid date format if the initial input is not exactly in the expected format. For example, entering "01-12-2023" (which is a valid date) gets rejected. How can I modify the validation logic to allow for various date formats? Additionally, are there any best practices for handling user input dynamically for different data types in VBA? Any suggestions would be greatly appreciated! How would you solve this?