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How to force uppercase of text entry in a textbox?

Author Xiaoyang Last modified

In Excel, we can quickly convert the lowercase to uppercase in cell text by using the UPPER function, but, have you ever tried to force the entered text to be uppercase in a textbox? This article, I will introduce a simple code to finish this job.

Force uppercase of text entry in a textbox with VBA code

arrow blue right bubble Force uppercase of text entry in a textbox with VBA code

Forcing the text to be entered as uppercase in a textbox, the following VBA code may do you a favor:

1. Firstly, insert the textbox by clicking Developer > Insert > Text Box (ActiveX Control), and then draw a textbox as you need, see screenshot:

insert a textbox from Developer tab

2. After inserting the textbox, right click at it, and select View Code from the context menu to open the Microsoft Visual Basic for Applications window, and then replace the original code with the following VBA code into the blank module:

VBA code: Force text to be uppercase in textbox:

Private Sub TextBox1_Change()
    TextBox1.Text = UCase(TextBox1.Text)
End Sub

click View Code to insert vba code

3. Then save and close the code window, and exit the Design mode, now, when you type text into the textbox, it will be forced to enter as uppercase, see screenshot:

when typing text into the textbox, it will be forced as uppercase

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