.NET button postBackUrl problem

muckwarrior · 25-04-2007 11:46am #1

I'm using the postBackUrl property of a .NET 2.0 button to post off my order form to a payment gateway. All seemed well until i tried hooking up my order processing code. It appears that the click event of the button isn't firing server side. I haven't been able to find any documentation that conclusively states whether or not server side events should fire when using postBackUrl but I've seen a couple of comments that suggest they should.

So firstly I'd like if someone could tell me for sure whether or not they're supposed to fire. If not can anyone think of an alternative way of processing my order before posting off to the payment gateway? (without adding another step to the order process)

Trampas · 25-04-2007 12:31pm

Would you not to the post url in the server side code under the button instead of in the property

muckwarrior · 25-04-2007 12:36pm

Trampas wrote:

Would you not to the post url in the server side code under the button instead of in the property

You mean programmatically POST to the Url instead? I thought of that but I don't think there's any easy way to do that in .Net (correct me if I'm wrong). Obviously Response.redirect won't work and neither will Server.Transfer as it's outside the application.

Evil Phil · 25-04-2007 1:19pm

You can't capture the click event on cross page postbacks. Could you use a Server.Transfer?

muckwarrior · 25-04-2007 1:23pm

Evil Phil wrote:

You can't capture the click event on cross page postbacks. Could you use a Server.Transfer?

Cheers, thats what I wanted to know. AFAIK Server.Transfer only works within the scope of the application, so I cant use it to post to a third party site.

Evil Phil · 25-04-2007 1:47pm

Sorry, I forgot it was off site.

Trampas · 25-04-2007 2:42pm

Response.redirect will post you out

muckwarrior · 25-04-2007 2:45pm

Trampas wrote:

Response.redirect will post you out

No, response.redirect will just redirect the client. It cant send POST data which I need it to do.

Trampas · 25-04-2007 3:10pm

Can you not attched it to the url

muckwarrior · 25-04-2007 3:13pm

No, the destination page will only accept data via POST. If I could use GET there'd be no problem at all.

Evil Phil · 25-04-2007 3:25pm

Could you use a standard HTML form within your page to do the post for you?

muckwarrior · 25-04-2007 3:31pm

I dont think so. I have to do some processing with the order server side before the form is posted off. I could split it up into two pages but thats what I'm trying to avoid.

muckwarrior · 25-04-2007 4:10pm

Solution was actually very simple in the end. In my server side click event I just write this to the page.

<script type="text/javascript">
        document.forms[0].action = "https://www.mypaymentgateway.com";
        document.forms[0].submit();
</script>

.NET button postBackUrl problem

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