Run Textbox change event just when user make changes

[s_samira_21]

Hi,
I have a userform with a list box. on Click event for the list box, all text boxes get the data about that row, from the sheets.
textbox "C" calculate data when the data in textboxes "A" or "B" changes. the value of text box "C" is saved in sheets, too.
so when the data is loaded from the sheets, textbox "C" get the value, and then, textbox "C" get the data from the sheets, again.
calculating textbox "C" have a huge vba code. so I perefer the code on change of textboxes "A" and "B" run just when the user enters data not when they fill by vba code. Is it possible?

thank you for you help

[Leith Ross]

Hello s_samira_21,

The quickest way to diagnose and correct VBA UserForm problems is post a copy of your Workbook. Before you post, please remove or change any information that is personal, confidential, or your workplace considers to be sensitive.