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Sorry about that. Then what code can I add here sir/ma'am Private Sub AddBook() ' ADD PARAMETERS Access.AddParam("@BNo", BookNo.Text) Access.AddParam("@Book_Category", Category.Text) Access.AddParam("@Book_Title", Title.Text)...

This the error that always pop up when I input duplicate Number. How can I fix that. I want to pop up a message that a user can understand easily if theirs duplicate number then it will not proceed to save. What is the code for that. Sorry about this question.

THANK VERY MUCH , I GOT IT :)

Here the code but i cant fine the correct code for it. If DateTimePicker1.Value.Date = Not Selected Then ErrorProvider1.SetError(DateTimePicker1, "PLEASE SELECT A DATE.") Return Else Me.ErrorProvider1.SetError(Me.DateTimePicker1, "") End If

I have three textbox, one datetimepicker, one button for save and one errorprovider. The problem is every time I input a data in textbox and I forgot to select the date it give an error in datetimepicker then when I select a date because I forgot it then save it the error provider still in...

Sorry about that I'm beginners in programming and I have so much to learn. By the way their is an error here.

The thing is I'm creating a log in , in ms visual studio 2010 and ms access database using vb.net language. Also the username is Admin and the password is admin in database. The problem is that when I login and input username and password like this admin for username and for password is admin ...

Thank you so much, I follow your instruction and its works.

I'm very sorry, this is my first time here, and thank you so much I will remember that.

Im sorry about that, but yeah your right. i put bracket in password and it work. Thank you so much for the info.

Im using vb.net language and ms access in ms visual studio 2010 Why when I'm saving data or add data the ms access have been deleting the data that i input?every 2 or 1 minute it will delete after isave or add

What is wrong in my code below? How to fix the error? Private Sub AddAdmin() ' ADD PARAMETERS aAccess.AddParam("@admin_no", txtANo.Text) aAccess.AddParam("@username", txtAUsername.Text) aAccess.AddParam("@password", txtAPassword.Text) '...