Charlie Calvert's Community Blog

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Charlie Calvert , in his post announcing Visual Studio 2008 Beta 2, shares some links to LINQ & C#

Work URL: http://download.microsoft.com/download/8/0/e/80e3f901-9bcc-4b8b-ba66-c49e24559fbc/vcs_samples_vs2008_beta2_02.exe

I very slow net, i took me 4 days to download it and i did , see what it currted, i try again, what happen it all files expand but not install there some problem in 2008 beta 2, i check other ppl all have same problem

I downloaded this thing but it does not seem to have any LINQ templates in it.  Where can I find them?  Thanks

Not sure where Customers.xml is, but you can just copy and paste this:

<?xml version="1.0" encoding="utf-8" ?>

<Customers>

<Customer CustomerID="ALFKI" City="Berlin"/>

<Customer CustomerID="BONAP" City="Marseille"/>

<Customer CustomerID="CONSH" City="London"/>

<Customer CustomerID="EASTC" City="London"/>

<Customer CustomerID="FRANS" City="Torino"/>

<Customer CustomerID="LONEP" City="Portland"/>

<Customer CustomerID="NORTS" City="London"/>

<Customer CustomerID="THEBI" City="Portland"/>

</Customers>

This a big relief on my family - the gas in my stomach makes a strong pressure, it is not a good thing.  I want to be an ice skater in the Olympics!

Charlie, I'm debugging the linq hands on lab, the xml stuff. It's all just wrong.

page 6, the example should read like this:

       static IEnumerable<Customer> CreateCustomersFromXml1()

       {

           return

               from c in XDocument.Load("Customers.xml")

               .Descendants("customers").Descendants("customer")

               select new Customer

               {

                   City = c.Element("city").Value,

                   CustomerID = c.Element("id").Value

               };

       }

what's wrong?

1. case of listeral element names in the example is wrong and won't work

2. id, not CustomerID

2. .Element("city") and .Element("id") is correct based on the provided xml, not .Attribute("City") and .Attribute("CustomerID")

my version of the XmlQuery with transform, that works:

           var doc = XDocument.Load("Customers.xml");

           var results = from c in doc.Descendants("customers").Descendants("customer")

                         where c.Element("city").Value == "London"

                         select c;

           XElement transformedResults =

               new XElement("Londoners",

                   from customer in results

                   select new XElement("Contact",

                       new XAttribute("id", customer.Element("id").Value),

                       new XElement("name", customer.Element("name").Value),

                       new XElement("city", customer.Element("city").Value)));

           Console.WriteLine(transformedResults);

hello,i need sample sorce for visual c# .thanks

I'm on page 6 and I get the following exception when calling XDocument.Load. I'm using the .xml file Kent posted above, but even if it's just an empty .xml file (<?xml version="1.0" encoding="utf-8" ?>EOF) I get the same exception.

System.MissingMethodException was unhandled

 Message="Method not found: 'Void System.Xml.XmlReaderSettings.set_MaxCharactersFromEntities(Int64)'."

 Source="System.Xml.Linq"

 StackTrace:

      at System.Xml.Linq.XNode.GetXmlReaderSettings(LoadOptions o)

      at System.Xml.Linq.XDocument.Load(String uri, LoadOptions options)

      at System.Xml.Linq.XDocument.Load(String uri)

      at LINQ_Overview.Program.CreateCustomers() in E:\Projects\DeleteMe\LINQ Overview\LINQ Overview\Program.cs:line 54

      at LINQ_Overview.Program.ObjectQuery() in E:\Projects\DeleteMe\LINQ Overview\LINQ Overview\Program.cs:line 44

      at LINQ_Overview.Program.Main(String[] args) in E:\Projects\DeleteMe\LINQ Overview\LINQ Overview\Program.cs:line 26

      at System.AppDomain.nExecuteAssembly(Assembly assembly, String[] args)

      at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)

      at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()

      at System.Threading.ThreadHelper.ThreadStart_Context(Object state)

      at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)

      at System.Threading.ThreadHelper.ThreadStart()

 InnerException:

Thank you for your work.cheer!!

My QQ is 370007548

I am 16 years old!