This document provides an overview of XML integration in C# and examples of using the writexml() and Readxml() methods. It explains that XML is an extensible markup language that supports predefined and user-defined tags. It then gives an example of creating a student.xml file and shows how writexml() can be used to convert a dataset into XML format. Finally, it demonstrates how Readxml() can retrieve data from an XML file and store it in a dataset.

1. Hi friends
C# Tutorial
Part 40:
XML
www.siri-kt.blogspot.com

2. • XML integration:
• XML is nothing but extesible markup language.
• XML is one of the front end database.
• using XML integration we can improves the
application performance.
• XML is normal text file.
• It supports predefined and user defined tags.
• XML is case sensitive language
• in XML every opening tag must be closed.
• XML supports data, database and relations between
the databases.

3. • how to create the student.xml:
• <student>
• <sno>10</sno>
• <sname>aaa</sname>
• <saddress>hyd</saddress>
• </student>
• xml supports 2 methods
• 1.writexml()
• 2.Readxml()
• 1.writexml():
• using this method we can create xml file depending on the dataset
• data.this method automatically converts dataset data into
• xml format.

4. • 2.ReadXml():
• using this method we can retrieve data from XML
file, we can store in the dataset. this method
automatically converts XML format data into the
dataset format.
• example writexml():
• 1.take a form.
• 2.add datagrid
• 3.add 1 button control

5. • SqlConnection con = new SqlConnection("data source=sit-pc;database
=siri;user id=sa;password=123");
• SqlDataAdapter da;
• DataSet ds = new DataSet();
• private void button1_Click(object sender, EventArgs e)
• {
• da = new SqlDataAdapter("select * from student", con);
• da.Fill(ds, "s");
• dataGrid1.DataSource = ds;
• ds.WriteXml("e:suhashini.xml");
• }
• example Readxml():
• 1.take the form
• 2.add datagrid control
• 3.add one button control

6. • goto-solution explorer-add one xml file
• xmlfile.xml:
• <workspace>
• <emp> <eno>10</eno>
• <ename>bhaskar</ename>
• <eaddress>hyd</eaddress>
• </emp>
• <emp> <eno>20</eno>
• <ename>suresh</ename>
• <eaddress>ameerpet</eaddress>
• </emp>
• <emp> <eno>30</eno>
• <ename>suhashini</ename>
• <eaddress>USA</eaddress>
• </emp></workspace>

7. • source code:
• private void button1_Click(object sender, EventArgs e)
• {
• DataSet ds = new DataSet();
•
ds.ReadXml("E:7pmonlineReadxmlExampleReadxm
lExampleXMLFile1.xml");
• dataGrid1.DataSource = ds;
• }

8. For more visit our website www.siri-kt.blogspot.com
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