Hi folks,
My problem is this...
I am having an issue with whitespace between XML tags that occurs when I
transform the XSL output to the browser via ASP.NET leaving me with
unexpected results.
Read on if you dare.
I have a XML file (datum.xml) that contains numeric values as shown here
<datums>
<datum>18</datum>
<datum>35</datum>
<datum87</datum>
</datum>
I have a XSL file that extracts the data from the XML and generates SVG
(Scalable Vector Graphics). SVG is a W3C standard, much like XML, used to
describe graphic images.
The transformation occurs in my ASP.NET file as shown here...
<%@ Page Language="C#" %>
<%@ Import Namespace="System.Xml" %>
<%@ Import Namespace="System.Xml.Xsl" %>
<%@ Import Namespace="System.Xml.XPath" %>
<script runat="server">
void Page_Load(object sender, System.EventArgs e)
{
// Response.AddHeader("Content-Type", "image/svg+xml");
string xmlPath = Request.PhysicalApplicationPath + @"datum.xml";
string xslPath = Request.PhysicalApplicationPath + @"datum.xsl";
XmlReader rdr = XmlReader.Create(xmlPath);
XslCompiledTransform transform = new XslCompiledTransform ();
//Load the XSL stylsheet into the XslCompiledTransform object
transform.Load(xslPath);
transform.Transform(rdr, null, Response.Output);
}
</script>
If the first line in my Page_Load function is commented out, the SVG is
displayed as text in the browser. If I uncomment the same line, I tell the
browser I am outputting SVG and I "expect" this to occur. It does not occur.
So I do a few tests. First I run the web app to view the SVG text displayed
in the browser that is shown here.
<?xml version="1.0" encoding="utf-8" ?>
- <svg height="100" width="100" viewBox="0 0 100 100"
xmlns:svg="http://www.w3.org/2000/svg">
<rect x="10" y="77" width="10" height="23" fill="red" stroke="black" />
<rect x="20" y="6" width="10" height="94" fill="red" stroke="black" />
<rect x="30" y="45" width="10" height="55" fill="red" stroke="black" />
</svg>
Next I copy the text as is and paste it into NotePad and then I save the
file as test1.svg. I then open my IE browser and select File->Open. I click
browse and select test1.svg. I click Ok and see a blank screen.
Finally I copy the same text in NotePad but this time I remove every space
and
CRLF between the tags. I save this file as test2.svg. I open my IE browser
and click File->Open to open test2.svg and I see a barchart which is my
expected result.
What I need to do is find a way to remove the whitespace and CRLF between
the tags in my ASP.NET code.
Any thoughts, ideas are welcome.
- Glenn
