Using OnClick event with PostBackUrl attribute of asp:Button

Question

I have an asp:Button control like this;

<asp:Button ID="btnPayCC" CssClass="paymentButton" runat="server" Text="ONAYLA"  
OnClientClick="if(!doPostBack()) return false; frmMaster.target='_blank'" 
PostBackUrl="http://www.google.com" OnClick="btnPayCC_Click" />

And doPostBack javascript function is;

function doPostBack() 
 {
   __doPostBack('<%= btnPayCC.ClientID %>', '');
   return true;
 };

When I clicked the button, then it opens new page(google.com) as I wish, But do not postback into button control's OnClick event.

What is the problem? How can I solve it?

You can only PostBack to one place. You're either posting "back" to the google url or you're posting back to your own page. Both can't happen without separate requests. — Joel Etherton
– Joel Etherton, Commented Mar 27, 2013 at 15:07
Thanks @JoelEtherton, I wonder, is there any alternative solution to do this job (calling a c# function using doPostBack vs.)? — Mehmet Ince
– Mehmet Ince, Commented Mar 27, 2013 at 15:09
I would recommend posting back to your local page, doing whatever verification you need then REposting to google. They are self-contained actions so shouldn't be dependent on each other. — Joel Etherton
– Joel Etherton, Commented Mar 27, 2013 at 15:43
@MehmetInce you can call your javascript from the code behind. — Nudier Mena
– Nudier Mena, Commented Mar 27, 2013 at 16:58

Schrodo_Baggins · Accepted Answer · 2013-04-23 19:10:45Z

5

I had the same problem. I solved it by adding a Response.Redirect("url") at the end of my onClick event for the Button and removing the PostbackUrl attribute from the button so that is uses autopostback to the same url. IE:

protected void Button_Click(object sender, EventArgs e)
{ 
   //do your button click events here
   Response.Redirect("~/url.aspx");
}

and

<asp:Button ID="Button" runat="server" CausesValidation="false" OnClick="Button_Click">

answered Apr 23, 2013 at 19:10

Schrodo_Baggins

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