Question

I want to show a confirm dialog in my asp.net/VB.net application.

I’m adding programmatically the OnClientClick method in the Click event of a buton.

My code:

Protected Sub btn_send_Click(sender As Object, e As EventArgs) Handles btn_send.Click
        btn_send.OnClientClick = "return confirm('Proceed?');"
End Sub

The dialog is displayed after the first postback of the site.

After I’ve made a postback, the dialog shows up on every click. But when I’m callin the page without a postback, no dialog shows up and the page does its postback.

Can anyone help?

Answer 1

Yes, you need to set the OnClientClick property before the button gets clicked, not after it.

So in your Page_Load or Page_Init methods, put the code you had in your button’s click handler:

btn_send.OnClientClick = "return confirm('Proceed?');"