Xml end tag repeating it more than once

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C#4.0

Hello Guys,
I am writing a code that will extract data from SQL table to XML file, all is working but my challenge is the xml end tag printing itself more than once.

i have tried :

What I have tried:

XmlTextReader XTReader = new XmlTextReader(ds1.GetXml(), XmlNodeType.Element, null);

//XMLTextWriter
//To write data into xml file
XmlTextWriter XTWriter = new XmlTextWriter(directoryPath + Tfilename.Trim() + ".xml", Encoding.UTF8);
XTWriter.WriteStartDocument();
XTWriter.Formatting = Formatting.Indented;
XTWriter.Indentation = 2;
string fieldName = "";
while (XTReader.Read())
{
switch (XTReader.NodeType)
{
//Check for the Node Name
case XmlNodeType.Element:
XTWriter.WriteStartElement(XTReader.Name);
fieldName = XTReader.Name;
break;
//Check for the Node Value
case XmlNodeType.Text:
//If the NodeName is PubDate
string Fname = "";

foreach (string mList in mFieldname)
{
Fname = mList.ToString().ToLower();
if (fieldName.ToLower() == Fname)
break;
}

if (fieldName.ToLower() == Fname)
//if (fieldName.ToLower() == SearchDate.ToLower())
{

DateTime dt = DateTime.Parse(XTReader.Value.ToString());

//Here the DateTime can be changed to any format as
//MM-dd-yyyy or dd-MM-yyyy or .ToShortDateString() ...

XTWriter.WriteString(dt.ToString("dd/MM/yyyy"));
}
else
XTWriter.WriteString(XTReader.Value);
// break;
//}
break;
case XmlNodeType.EndElement:
XTWriter.WriteEndElement();
break;
} //switch
} // while
XTWriter.WriteEndElement();
XTWriter.Close();
XTReader.Close();
DA1.Dispose();
cmd.Dispose();

the result i am getting is shows is too many "PatientDemographics_Record" instead of only then the "NewDataSet" :