C# Xml Error Handling
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C# Error Handling In Constructor
The content you requested has been removed. You’ll be auto redirected in 1 second. Employing XML in
C# Error Handling Get Line Number
the .NET Framework Reading XML with the XmlReader Reading XML Data with XmlTextReader Reading XML Data with XmlTextReader Exception Handling Using XmlException in XmlTextReader Exception Handling Using XmlException in
C# Error Handling Framework
XmlTextReader Exception Handling Using XmlException in XmlTextReader Full Content Reads Using Character Streams Document Type Declaration Information Handling White Space with XmlTextReader Attribute Value Normalization Exception Handling Using XmlException in XmlTextReader Reading XML Fragments with the XmlTextReader TOC Collapse the table of content Expand the table of content This documentation is archived and is not being maintained. This c# error handling techniques documentation is archived and is not being maintained. Recommended Version This documentation is archived and is not being maintained. Exception Handling Using XmlException in XmlTextReader .NET Framework 1.1 Other Versions .NET Framework (current version) Visual Studio 2010 .NET Framework 4 .NET Framework 3.5 .NET Framework 2.0 The XmlException class is used with the XmlTextReader class to catch errors in data when it finds syntax errors during parsing. The errors that are caught are a result of problems with the way the data is structured, as data should be structured according to the rules defined in the W3C recommendation. The following code sample shows the XmlException class returning a LineNumber and LinePosition of an error in the LineNumber.xml document, assuming that the XML in the LineNumber.xml document is not well-formed. VB Copy Dim tr As New XmlTextReader("LineNumber.xml") Dim r As New XmlValidatingReader(tr) r.ValidationType = ValidationType.None Try While r.Read() End While Catch e As XmlException Console.WriteLine(e.Message) Console.WriteLine(("Exception object Line, pos: (" & e.LineNumber & "," & e.LinePosition & ")")) Console.WriteLine(("XmlReader Line, pos:
resources Windows Server 2012 resources Programs MSDN subscriptions Overview Benefits Administrators Students Microsoft Imagine Microsoft Student Partners ISV Startups TechRewards Events Community Magazine Forums c# error handling class Blogs Channel 9 Documentation APIs and reference Dev centers Retired content error handling in c# best practices Samples We’re sorry. The content you requested has been removed. You’ll be auto redirected in 1 second. error handling c# mvc Using the XmlReader Class Reading XML Using Concrete XmlReader Implementaions Reading XML Data with XmlTextReader Reading XML Data with XmlTextReader Exception Handling Using XmlException in XmlTextReader Exception https://msdn.microsoft.com/en-us/library/ch49a7ch(v=vs.71).aspx Handling Using XmlException in XmlTextReader Exception Handling Using XmlException in XmlTextReader Full Content Reads Using Character Streams Document Type Declaration Information Handling White Space with XmlTextReader Attribute Value Normalization Exception Handling Using XmlException in XmlTextReader Reading XML Fragments with the XmlTextReader TOC Collapse the table of content Expand the table of content This documentation is https://msdn.microsoft.com/en-us/library/ch49a7ch(v=vs.80).aspx archived and is not being maintained. This documentation is archived and is not being maintained. Recommended Version This documentation is archived and is not being maintained. Exception Handling Using XmlException in XmlTextReader .NET Framework 2.0 Other Versions .NET Framework (current version) Visual Studio 2010 .NET Framework 4 .NET Framework 3.5 .NET Framework 1.1 The XmlException class is used with the XmlTextReader class to catch errors in data when it finds syntax errors during parsing. The errors that are caught are a result of problems with the way the data is structured, as data should be structured according to the rules defined in the World Wide Web Consortium (W3C) Recommendation. Note In the Microsoft .NET Framework version 2.0, the recommended practice is to create XmlReader instances using the XmlReaderSettings class and the Create method. This allows you to take full advantage of all the new features introduced in the .NET Framework 2.0. For more information, see Creating XML Readers. Example The following code example sh
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about http://stackoverflow.com/questions/1404447/cant-seem-to-handle-xmlexception hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. http://stackoverflow.com/questions/16621314/how-to-handle-exceptions-for-xmlreader-create Join them; it only takes a minute: Sign up Can't seem to handle XMLException? up vote 5 down vote favorite 1 I have the following code in one of our projects webpages: XmlDocument xDoc = new XmlDocument(); xDoc.Load(File.FullName); error handling //work through each print batch in this queue file try { XmlNodeList nodeList = xDoc.SelectNodes("Reports/PrintBatch"); foreach (XmlNode printBatch in nodeList)//xDoc.SelectNodes("Reports/PrintBatch")) { PrintBatch batch = new PrintBatch(); batch.LoadBatch(printBatch, File.Extension); this.AddBatch(batch); } } catch (XmlException e) { //this report had an error loading! Console.WriteLine(e.Message); } It basically takes an xml batch file and loads it up as an object, ready to be processed. It's been working fine, until recently when one of the XML files was found to contain a c# error handling null character (which is invalid in XML). When it tries to process this "dudd" file, we get the following exception: Ok so far.. but when we then try to "continue" or "step over", I expect it to flow into the catch block. However, it doesn't; we simply get the red screen of death: What am I doing wrong? c# asp.net xml exception share|improve this question asked Sep 10 '09 at 10:14 Sk93 2,15821952 Have tried catching SystemException, Exception, System.Xml.XmlPath.XPathException with similar success.. –Sk93 Sep 10 '09 at 10:25 out of curiousity, what happens when you change catch(XmlException e) {} to catch {}? –Razzie Sep 10 '09 at 10:26 Razzie: Exactly the same. Throws the red screen o' death. –Sk93 Sep 10 '09 at 10:28 add a comment| 2 Answers 2 active oldest votes up vote 5 down vote accepted It is because you have not written xDoc.Load(File.FullName); inside the try block. That is the reason why the exception was not handled. share|improve this answer answered Sep 10 '09 at 10:20 rahul 119k28179220 That's it, thanks! But could you explain (or point to somewhere) why is this the case? –Sk93 Sep 10 '09 at 10:27 1 You can catch an exception only if it occurs in a try block corresponding to the catch block. –rahul Sep 10 '09 at 10:28 But t
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up How to handle exceptions for XmlReader.Create up vote 2 down vote favorite Not sure how much of the code is necessary here. I'm trying to create a try block that doesn't include all of my code for handling the XML file. If I can't read the XML file, I get an UnauthorizedAccessException exception here: XmlReader xmlIn = XmlReader.Create(configFile, settings); But then I have all of my code that reads the XML and because the xmlIn is in the Try block, the rest of the code in my method can't see it. I thought about maybe creating a default XmlReader: XmlReader xmlIn = null; Before the try block and just throw the initialization in the try block, but the method is supposed to return a custom object that contains some strings and that causes the code that is supposed to run after that part to throw a NullReferenceException exception. I searched for a while and the best I could come up with was the following that suggested that it's better to handle the exception, rather than testing access to the file beforehand, which is what I was thinking to try: how can you easily check if access is denied for a file in .NET? So I'm kind of stuck in the middle with the proper way to handle this code that I thought would be pretty trivial. Do I just throw everything in the method into a try block, use the try in the part of my code that calls this method, or is there a better way to handle this? c# xml share|improve this question asked May 18 '13 at 6:14 PseudoSsiah 691411 add a comment| 1 Answer 1 active oldest votes up vote 0 down vote XmlReader reader=null; try { //reader.Create code } catch { //your exception code } if(reader!=null) { //other tasks } share|improve this answer edited May 18 '13 at 6:28 answered May 18 '13 at 6:16 Victor Mukherjee 3,32592854 Okay, so all of my tasks involving the reader should be within the try block, even if I'm reading a bunch of elements from the XML? –PseudoSsiah May 18 '13 at 6:22 Sorry, let me add a little more to that. All of the "Best Practice" information I have read always has a very small amount of code