Sharing a value between client side and server side code.

[sara_23apr]

Hello Friends

I need to take an action at server side depending on the choice the user has made at client (client side message box)

I have created a text box and assigned the value from the javascript and tried to access it from the serverside

code. It works fine in the standalone page, but when i try the same code inside a content page, nothing

happens

Code inside a standalone page

function GetConfirm()
{
var ReturnedValue = confirm("Are you sure?");
form1.txtboxName.value= "Welcome";
}

Thanks for your time
Sara

[wild_bill]

Try this

Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        If Not Page.IsPostBack Then
            'add confirmation message to send button
            btnSend.Attributes("onclick") = "javascript:return confirm('Are you sure you want send?');"
               End If
    End Sub
    Private Sub btnSend_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSend.Click
        me.txtboxname.value="Welcome"
    End Sub

[sara_23apr]

Thank you very much for your answer.
I really appreciate you answering so many newbie questions. I am sure
lot many people feel the same about your replies

The solution you have given is working fine. But the mistake i had done is that I have not explained my challenge completely.

On click of the DELETE button I have to do 2 validations

1) first check if any payments have been done for that bill. if YES display a messege "Cannot delete record --Payment done"

2) if no payment is done then display message " Do you want to delete this record" -- if yes delete the record

How do i handle 2 validations on click of the same button ?

Thank you for your time and reply


Sara

[wild_bill]

Can you determine if a payment is done with out making a post back to the server?

[sara_23apr]

Thank you for the reply

I guess i have to do a postback to the server to find out if a payment has been done......The payment details (EMI) are in the details table and the Loan details is in the master, If a EMI has been paid for a particula loan then i do not want to delete that loan record

Is it possible to call a function on click of the button which will handle more than one condition ?

Thank you for your time

Sara

[StrangerInBeijing]

dont know i understand correctly, but yes, you can do as many things you like in a single method.
Or even better (just my style), create on method for each of the actions you wnat to perform, and call them in order, depending on their return values, from the method called by the button (or in the button's click event)
like: (just pseudo code ok?)

Button Click
If (PaymentsMade)
  if (Delete)
    DoThis...
   else
     DoThat
End
Bool PaymentsMade
   ...query database to see if payments is made
   ...return true or false
End
Bool Delete
  string script = "call javascript"...not sure how to get yes/no back here...anyone?
   return true or false

End

[sara_23apr]

Hi StrangerInBeijing

Thanks for your Time and Reply.

Looks good. but i do not know how to implement it. Guess i will need a bit more handholding


Sara

[StrangerInBeijing]

Seeing I dont know how to pop a confirm box and get the return value from the code behind, just wait until the Frog comes around. You'll soon learn, that mother got an answer to everything.

[wild_bill]

Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        If Not Page.IsPostBack Then
            'add confirmation message to send button
            btnSend.Attributes("onclick") = "javascript:return confirm('Are you sure you want send?');"
               End If
    End Sub
    Private Sub btnSend_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSend.Click
        'Do server side code to see if a payment is done
        If paymentIsDone Then
            Page.RegisterStartupScript("ClientSideScript", "<script>alert('Cannot delete record --Payment done');</script>")
        Else
            'Do delete
        End If
    End Sub

[sara_23apr]

Thanks for the reply


Well this will first display a message saying "'Are you sure you want send" ?

I need the payment checking part to happen first, so that there is only one message "Cannot delete as a payment is done" ...else the program will ask do you want to delete the record, then say " cannot delete"

All help is truely appreciated

regards
Sara