Reading XML in ASP.NET C#

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C#

C#4.0

ASP.NET4

Please guys, i'm trying to read the following XML String, but it seems like there's something i'm doing wrong here. Here is the XML String

<?xml version="1.0" encoding="utf-8" ?>
<TRANS_NET>
<REQUEST_ID>0</REQUEST_ID>
<REQUEST_DATE>0000-000</REQUEST_DATE>
<RESPONSE_CODE>003</RESPONSE_CODE>
<RESPONSE_REASON>
<ERROR>
<ERROR_CODE>243</ERROR_CODE>
<ERROR_CODE>003</ERROR_CODE>
<ERROR_CODE>040</ERROR_CODE>
<ERROR_CODE>017</ERROR_CODE>
<ERROR_CODE>039</ERROR_CODE>
</ERROR>
</RESPONSE_REASON>
</TRANS_NET>

Here Is my Code for reading it

using (System.Xml.XmlReader xmlReader = System.Xml.XmlReader.Create(strReader))
                {
                    while (xmlReader.Read())
                    {
                        if (xmlReader.NodeType == System.Xml.XmlNodeType.Element)
                        {
                            //if (xmlReader.Name == "TRANS_NET")
                            //{
                                switch (xmlReader.Name)
                                {
                                    case "TRANS_NET":
                                        plainText += "Response \r\n";
                                        break;
                                    case "REQUEST_ID":
                                        plainText += String.Format("Request ID = {0} \r\n", xmlReader.Value);
                                        break;
                                    case "REQUEST_DATE":
                                        plainText += String.Format("Request Date = {0} \r\n", xmlReader.Value);
                                        break;
                                    case "RESPONSE_CODE":
                                        plainText += String.Format("Response Code = {0} \r\n", xmlReader.Value);
                                        break;
                                    case "RESPONSE_REASON":
                                        plainText += "An Error Was Encountered \r\n";
                                        break;
                                    case "ERROR":
                                        plainText += "Error Codes List \r\n";
                                        break;
                                    case "ERROR_CODE":
                                        if (xmlReader.Read())
                                        {
                                            plainText += String.Format("Error Code = {0} \r\n", xmlReader.Value);
                                        }
                                        break;
                                    default:
                                        plainText += "\r\n";
                                        break;
                                }
                            //}
                        }
                    }
                }

And here is the result that i get
Response
Request ID =
Request Date =
Response Code =
An Error Was Encountered
Error Codes List
Error Code = 243
Error Code = 003
Error Code = 040
Error Code = 017
Error Code = 039

The problem here is that the
Request ID =
Request Date =
Response Code = Values are not display

Thanks