On Change of Textbox calling Routine

[nerdalert1]

Hello all. I have 12 textboxes on a form where currently I have a client control validator for each checking if the value is currency. How can I also call a sub routine either on the change or exit of the textbox to call a Total Sub Routine which adds up the textboxes and places it into a Total Textbox. I already have the routine to handle the total I just dont know how to kick off the routine on the exit of the box because I already have a validator doing a datatypecheck on each one. Thanks all.

 

[checkai]

you could add an onchange attribute to each of the text boxes...and include the client side validation in the routine

javascript function
function(txtboxID)
if txtboxID is not a number
alert('not a number');
return false;
} else {
add all the text boxes together

}

 

[nerdalert1]

Can I call a VB Code Behind routine from within the javascript?

 

[ca8msm]

Only if you post back to the server.

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[nerdalert1]

How would I do that? I have the textbox as Runat="server".

 

[ca8msm]

You would use a Server Control. e.g.

<asp:TextBox id="TextBox1" runat="server"></asp:TextBox></form>

Set the SutoPostBack to True and use the TextChanged event. e.g.

    Private Sub TextBox1_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TextBox1.TextChanged

    End Sub

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[nerdalert1]

I needed the autopostback = true thats what I really needed. It seems to be working now. One last question I need to prompt the user if they want to roll the totals into the other textboxes. The routine is firing now correctly. How do I prompt the user with a Yes No dialog and then run my code? I know how to handle this within the code but this wont work on the client side correct? I have like:

Dim ianswer as integer

ianswer = MsgBox("Do you want to add all?", MsgBoxStyle.YesNo, "Add All")

If ianswer = vbYes Then
txtBox1.Text = txtBox2.Text
End If