Question

Possible Duplicate:
Read Post Data submitted to ASP.Net Form

I have a google checkout “buy now” button, and am trying to add dynamically created content to send when it’s clicked. Using the original html is proving a bit difficult so I want to create an ASP.Net ImageButton Instead of that.

I’ve succeeded in creating the button with the right image, and hooking it up to an event handler in the codebehind.

However, I’m not sure what exactly happens when the original button is clicked, in order to try and emulate it in the new ImageButton.

The original code is:

<form action="https://sandbox.google.com/checkout/..." id="Form1" method="post" name="..." target="_top">
<input name="item_name_1" type="hidden" value="..." />
...
<input alt="" src="https://sandbox.google.com/checkout/buttons/buy.gif?merchant_id=..." type="image" />
</form>

And I want to place a dynamically created item_name_1.

What do I have to do in the Button1_Click method for that?

Answer 1

The short, concise and usefull version:

Html:

<form id="__parent" action="..." method="post" runat="server">
    <input id="__child0" name="type" type="hidden" value="button" runat="server" />
    <input id="__child1" name="name" type="hidden" value="teh_button" runat="server" />
    <input id="__child2" name="value" type="hidden" value="Hello?" runat="server" />
</form>

tehfile.cs:

<%@ Page Language="C#" CodeFile="tehfile.cs" %>

String
    _type = __child0.Value,
    _name = __child1.Value,
    _value     = __child2.Value,
    _element   = String.Format( 
        "<{0} {1}=\"{2}\" {3}=\"{4}\" {5}=\"{6}\" />", 
        "input", 
        "type", _type,
        "name", _name,
        "value", _value  );

Literal _lit = new Literal( );
_lit.Text = _element;

__parent.AddControl( _lit );