Re: [Xsltforms-support] XSLTForms with ASP.NET

[Dan M. <dan...@gm...>]

William,

Thank you for sharing this story.  It is always good to hear of
knowledgeable people showing the rest of the world "The Declarative Way".
I hope your team shares their results with others.

- Dan

On Fri, Dec 16, 2011 at 3:11 PM, William David Velasquez <
wi...@bi...> wrote:

> Hi XForms fans!
>
> I just saved tons of work using XForms instead of WebForms in a .NET
> project I´m currently working.
>
> It's pretty easy to include an XForms in a ASP.NET page using XSLTForms
> and the asp:Xml Control for a server side transform. This line does the
> trick:
>
> <asp:Xml ID="Xml1" runat="server" DocumentSource="~/myform.xforms"
> TransformSource="~/xsltforms/xsltforms.xsl" EnableViewState="False"
>  ></asp:Xml>
>
> And to process the submission with DOM, two lines do the work:
>
> <%@ Page Language="C#"  %>
> <%
> System.Xml.XmlDocument doc = new System.Xml.XmlDocument();
> doc.Load(Request.InputStream);
>
> // process your xml here....
>
> %>
>
> There is just two things to keep in mind:
>
> 1. You need the latest version of XSLTForms from the repository (I
> tested with rev 521). Previous versions don´t work with .NET
> transformation engine.
>
> 2. ASP.NET WebForms wraps all the controls in the page with <form
>  >...</form> so when the Xml Control renders the xhtml for the XForm,
> clicking in the xf:triggers post the form submission (an undesirable
> behavior) because they are rendered as <button> with the default
> type=submit.
>
> There are to workarounds:
> 1. Move the <asp:Xml> outside the <form runat="server"> tag in the aspx
> page,
> 2. When that isn't possible (for example, when you use MasterPages),
> make a little modification in xsltforms.xsl to add the atributte
> type="button" when triggers are rendered. This is done in this template
> (line 1141 in rev 521):
>
> <xsl:template match="xforms:trigger|xforms:submit" ...
>
> Below is the generation of the <button> tag (line 1162 in rev 521):
>
> <button>
>   <xsl:copy-of select="$innerbody"/>
> </button>
>
> You can add the attribute this way:
>
> <button>
>   <xsl:attribute name="type">button</xsl:attribute>
>   <xsl:copy-of select="$innerbody"/>
> </button>
>
> I know monsieur Alain kindly will include this change in a future
> release ;-)
>
> I'm getting mixed reaactions from my co-workers (most of them are MS
> fans), so I asked them to write a form using the normal aspnet way to
> calculate an invoice, allowing users to add details lines, sum totals,
> taxes, etc. They had to write more than 50 tricky lines of code, with
> events handlers, javascript and a lot of Googling. Then I showed it with
> XForms: five xf:bind and two xf:trigger for custom logic
>
> No need to say they are starting to get convinced.
>
> Merry Christmas,
>
>
> William Velasquez
>
>
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-- 
Dan McCreary
Semantic Solutions Architect
office: (952) 931-9198
cell: (612) 986-1552