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Webservices and Blend....tempuri.org problems

Location: Blogs Sean Cullinan
Posted by: Sean Cullinan	1/28/2008 4:21 PM
Blend offers great databinding to XML datasources, even online sources such as RSS feeds. Maybe I've missed something, but it does not seem to integrate quite as smoothly with .net webservices that return datasets. There is no way to simply reference your .net webservice in Blend and have it generate your templates etc the way there is for other XML datasources. I don't understand why this is the case, you would think that MSFT would be pushing integration with .net webservice above RSS and other competing mechanisms. Anyhow, our workaround is to have our webservice write out xml files of its datasets to disk (myDs.writexml("c:\myproj\mydata.xml")). Unfortunately when they were written the opening tag was being written as since we didnt' have a real uri in our XMLNS. Blend played ok with this dataset, you could add it as an xml datasource, drag the table to the window and tell it to add a listbox, set up the datatemplate on the listbox and select your fields from that dataset. However, it wouldn't actually put the data in the listbox. After wrestling with this for a while I realized that this was because of the xmlns line. Removing this section from the xml on disk makes it work just fine in Blend. I can then build my templates and create my looks in blend, knowing that I am going to later bind my control to the actual webservice xml in code. I wish Blend would throw an error instead of work partially when you have a situation like this....a "cannot find uri tempuri.org/myDS.xsd" would've gone a long way to pointing out the problem from the get-go.

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