what's the problem with this program which reads xml file by xmltextreader return "None"

Question

2.00/5 (1 vote)

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my xml file:

HTML

<PersonelInfo>
  <Person>
    <KeyID>15</KeyID>
    <PersonelCode>12</PersonelCode>
    <Company>sth</Company>
    <FirstName>m</FirstName>
    <LastName>it</LastName>
  </Person>
</PersonelInfo>

reding xml file

C#

using (StringReader stringReader = new StringReader("C:\\Users\\sth\\Desktop\\admin715.xml"))
using (XmlTextReader reader = new XmlTextReader(stringReader))
{
    // Parse the file and display each of the nodes.
    Class_PersonelInfo prsn = null;
    if (reader.IsStartElement())
    {
        while (reader.Read())
        {
            switch (reader.Name)
            {
                case "PersonelCode":
                    prsn.prsnlCod = reader.Value;
                    break;
                case "Company":
                    prsn.jobLocation = reader.Value;
                    break;
                case "FirstName":
                    prsn.frstName = reader.Value;
                    break;
                case "LastName":
                    prsn.lstName = reader.Value;
                    break;
             }
        }
   }
}

the problem is reader is "none"

Posted 6-Oct-14 18:38pm

Member 11133908

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ashok rathod · Answer 1 · 2014-10-06T18:59:00

Solution 1

Its silly Mistake your StringReaderClass Expects String so Solution would be like this you had to replace your StringReader line like this

C#

StringReader stringReader = new StringReader(File.ReadAllText("C:\\Users\\sth\\Desktop\\admin715.xml"));

You had to pass your string content to StringReaderClass so read all content from your file and then pass it to xmlTextReader Class it will give you proper result.

Posted 6-Oct-14 18:59pm

ashok rathod

Updated 6-Oct-14 19:06pm

v3

Comments

ashok rathod 7-Oct-14 1:08am

Can anyone tell me what is the reason to downvote the answer although it contains all the required information and is a fullproof solution for the question.

Samatha Reddy G · Answer 2 · 2014-10-06T20:19:00

once try like this, this is simple way to read xmal values and assign it to properties

C#

class readxml
   {
       static void Main(string[] args)
       {
           var doc=XElement.Load(@"F:\WebApplication1\ConsoleApplication1\XMLFile1.xml");
           var ms = doc.Elements("Person");
           var test = ms.Select(s => new PresonTest() { FirstName = s.Element("FirstName").Value, LastName = s.Element("LastName").Value, PersonalCode = s.Element("PersonelCode").Value, Company = s.Element("Company").Value });

       }
   }

   public class PresonTest
   {
       public string FirstName { get; set; }
       public string  LastName { get; set; }
       public string PersonalCode { get; set; }
       public string Company { get; set; }
   }

Sergey Alexandrovich Kryukov · Answer 3 · 2014-10-06T19:00:00

This is the correct pattern used to create such a reader to read a file:

C#

string fileName = //...
using (XmlReader reader = XmlReader.Create(fileName)) {
   //...
}

The class XmlReader is abstract. The concrete implementation will be chosen by the choice of one of those Create factory methods and their parameters. If you are curious what is the runtime type of your reader, use reader.GetType().

By the way, your "manual" and hard-coded way of dealing with XML is bad. It's much better to use serialization in the form of Data Contract: http://msdn.microsoft.com/en-us/library/ms733127%28v=vs.110%29.aspx[^].

To use Data Contracts, you don't have to use WCF itself.

—SA

what's the problem with this program which reads xml file by xmltextreader return "None"

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