Re-population of text boxes

I have a form which has many text boxes where the user enters data, and this data can then be saved. This all works perfectly except that I have found that at run time a user can enter data into a text box and then delete this data, but when the user clicks on the next textbox the data reappears.

Also when the user saves one record and creates a new record all the text boxes are set to hold null strings to make them look blank, this is fine until the user clicks or tabs into them and then they populate with the data previously entered.

Help

Thanks in advance

Louisa

Are you using databases with the form? It sounds like one of your properties is set wrong.

Yes I am using a database behind. What properties could I have set incorrectly, those on the fields in the table or those on the text box?

Thanks
Louisa