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Create XML String from DataView?

Posted on 2007-04-02
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Last Modified: 2013-11-07
Using VWD 2005 and SQL 2005

What started out to be a quick and dirty tool has proved to be quite a distraction for me.  I have a need to retrieve records from a stored procedure, serialize them into XML and run a transformation on them with an XSL.

My first thought was to create a DAL.  So, using the dataset wizard I made a data object with one method to retrieve records with a parameter.

Next I dropped an XML object onto my web form.  I set the TransformationSource property to my XSL stylesheet and my thought was to set the DocumentContent property to an XML string.

Where was the XML content to come from?  I knew that the dataset has the GetXML method.  However, the DAL tableadapters return a datatable.  I can make a dataview from that, but that doesn't really help either.

I know that I can just code this by hand in a few minutes and get the XML from a dataset, but like I said - this really got me distracted - and I was wondering if there was a way to serialize the contents of the datatable or dataview that is returned.
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Question by:manicsquirrel
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4 Comments
 
LVL 5

Expert Comment

by:jef06
ID: 18841615
Try this :)

DataView data = new DataSet().Tables[0].DefaultView;
XmlSerializer serializer = new XmlSerializer(data.GetType());
                StringBuilder sb = new StringBuilder();
                TextWriter writer = new StringWriter(sb);

                serializer.Serialize(writer, data);
                StringReader reader = new StringReader(writer.ToString());

                DataSet dst = new DataSet();
                dst.ReadXml(reader);
                dv = new DataView(dst.Tables[0]);
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LVL 28

Accepted Solution

by:
iboutchkine earned 500 total points
ID: 18842706
Serialize
\\\\
 Dim sw As New System.IO.StringWriter
 ds.WriteXml(sw)
 Dim mystring As String = sw.tostring
///
Deserialize
\\\
 Dim sr As New System.IO.StringReader(mystring)
 Dim ds2 As New DataSet
 ds2.ReadXml(sr)
///
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LVL 6

Author Comment

by:manicsquirrel
ID: 18844222
I like using my brain a little, and while iboutchkine didn't write the routing for me, it was just enough to make a light bulb go off.  My resulting solution was (remember, I already have a dataview - dv)

        Dim sw As New System.IO.StringWriter
        dv.Table.WriteXml(sw)
        Dim str As String = sw.ToString

Now I have effectively retrieved serialized data from my dataview which is what I was wanting.  Thanks for both of your responses.
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LVL 6

Author Comment

by:manicsquirrel
ID: 18844231
Did I type "routing"?  I meant "routine".
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