XMLWriteTest

private void XmlWriteTest()
        {                            
            
            XmlTextWriter writer = new XmlTextWriter (this.fileName, null);
            //Use indenting for readability.
            writer.Formatting = Formatting.Indented;
        
            writer.WriteComment("sample XML fragment");
    
            //Write an element (this one is the root).
            writer.WriteStartElement("bookstore");

            //Write the namespace declaration.

            writer.WriteAttributeString("xmlns", "bk", null, "urn:samples");
            

            writer.WriteStartElement("book");

            //Lookup the prefix and then write the ISBN attribute.
            string prefix = writer.LookupPrefix("urn:samples");
            writer.WriteStartAttribute(prefix, "ISBN", "urn:samples");
            writer.WriteString("1-861003-78");
            writer.WriteEndAttribute();     

            //Write the title.
            writer.WriteStartElement("title");
            writer.WriteString("The Handmaid's Tale");
            writer.WriteEndElement();
              
            //Write the price.
            writer.WriteElementString("price", "19.95");
     
            //Write the style element.
            writer.WriteStartElement(prefix, "style", "urn:samples");
            writer.WriteString("hardcover");
            writer.WriteEndElement();

            //Write the end tag for the book element.
            writer.WriteEndElement();

            //Write the close tag for the root element.
            writer.WriteEndElement();
             
            //Write the XML to file and close the writer.
            writer.Flush();
            writer.Close();

            //Read the file back in and parse to ensure well formed XML.
            XmlDocument doc = new XmlDocument();
            //Preserve white space for readability.
            doc.PreserveWhitespace = true;
            //Load the file
            doc.Load(this.fileName);
    
            //Write the XML content to the console.
            this.richTextBox1.Text=doc.InnerXml;

        }