VBA UserForm Validation Not Triggering - advanced patterns in Excel 2019
I am implementing a UserForm in Excel VBA to collect user inputs. I have set up validation for a couple of fields, but I'm working with unexpected behavior. Specifically, when the user clicks the submit button, the validation for required fields does not always trigger, even when they are left blank. The intended behavior is for a message box to appear, prompting the user to fill out all required fields before proceeding. Hereβs a snippet of my code where I handle the submit button event: ```vba Private Sub btnSubmit_Click() If IsEmpty(txtName.Value) Then MsgBox "Please enter your name.", vbExclamation, "Validation behavior" txtName.SetFocus ElseIf IsEmpty(txtEmail.Value) Then MsgBox "Please enter your email address.", vbExclamation, "Validation behavior" txtEmail.SetFocus Else ' Code to process the data MsgBox "Data submitted successfully!" End If End Sub ``` Interestingly, it seems that the validation does not trigger if the UserForm is opened from another form or if the user has previously interacted with other controls before clicking submit. I've tried using `Trim()` on the input values, but that didn't resolve the scenario. Additionally, I've noticed inconsistent behavior when switching focus between controls. In some cases, the validation message shows up correctly, while in others, it does not. I am currently working with Excel 2019 and using the built-in VBA editor. Any insights on what might be causing this scenario or how to ensure consistent validation would be greatly appreciated!