macleojw - Developer IT

How can I resolve exception: Error executing child request for ChartImg.axd

- by macleojw

I'm using the Chart Controls for Mircosoft .NET Framerwork. Most of the time they work perfectly. However, if I leave a page for longer than 20-30 mins and then try to refresh the page, I get an error saying: Error executing child request for ChartImg.axd. Exception Details: System.Web.HttpException: Error executing child request for ChartImg.axd. If I update the page using an AJAX update panel I get the following error: Sys.WebForms.PageRequestManagerServerErrorException: Error executing child request for ChartImg.axd It seems that the chart handler stops after a period of inactivity. Most of the webpages I've looked at for this error are for situations when this error is displayed all the time. In my case it is only displayed after a period of inactivity. Can someone provide a better explanation of what is happening and suggest a solution?

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Using Xpath With Default Namespace in C#

- by macleojw

I've got an XML document with a default namespace. I'm using a XPathNavigator to select a set of nodes using Xpath as follows: XmlElement myXML = ...; XPathNavigator navigator = myXML.CreateNavigator(); XPathNodeIterator result = navigator.Select("/outerelement/innerelement"); I am not getting any results back: I'm assuming this is because I am not specifying the namespace. How can I include the namespace in my select?

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Should I create a new extension for an xml file?

- by macleojw

I'm working with a data model stored in XML files. I want to create some metadata for the model and store it alongside, but would like to be able to distinguish between the two. The data model is imported into some software from time to time and we don't want it to try to import the meta data files. To get round this, I've been thinking of creating a new extension for the metadata xml files (say .mdml). Is this good practice?

Developer IT