C# want change name in the second line how to change

Question

<CStudent>
<student>
<name>boy</name>
<age>10</age>
<location>paris</location>
<phone>222-555</phone>
</student>
<student>
<name>mark</name>
<age>18</age>
<location>korea</location>
<phone>01026800393</phone>
</student>
</CStudent>

Code c#
_myXML.SelectSingleNode("CStudent/student/name").InnerText = txtName.Text;
_myXML.SelectSingleNode("CStudent/student/age").InnerText = txtAge.Text;
_myXML.SelectSingleNode("CStudent/student/location").InnerText = txtLocation.Text;
_myXML.SelectSingleNode("CStudent/student/phone").InnerText = txtPhone.Text;

Answer 1

XmlDocument _myXML = new XmlDocument();
Yes Student Mark . How to change this Sir?

Answer 2

Use SelectNodes
Place the nodes in a XMLNodeList
And use a foreach-loop to loop throught the node list

http://www.csharp-examples.net/xml-nodes-by-name/

Answer 3

I will try sir

Answer 4

What is the type of _myXML ?

What do you mean by second line ? The node of student Mark or something else ?