Description :
In the listview you have items in the form of
Happy=Coding
Hello=wORLD
You want to export the listview items to xml.XML should look like:
< ?xml version="1.0" encoding="utf-8"? >
< Collection >
< Details Name="Happy" Val="Coding" / >
< Details Name="Hello" Val="World" / >
< /Collection >
Now during exporting it has to check if the file already exist or not.If it doesnot exist it should create a new xml file.And in case the file already exist then it should add the listview items before the rootnode.
private bool ExportToXML()
{
FileStream fleStream;
StreamWriter stmWriter;
XmlTextWriter xmlTxtWriter;
string filepath = Application.StartupPath + "/" + "myxml.xml";
try
{
if (File.Exists(filepath))
{
fleStream = new FileStream("myxml.xml", FileMode.Append, FileAccess.Write, FileShare.None);
stmWriter = new StreamWriter(fleStream);
xmlTxtWriter = new XmlTextWriter(stmWriter);
xmlTxtWriter.Formatting = Formatting.Indented;
XmlDocument originalXml = new XmlDocument();
stmWriter.Close();
originalXml.Load(filepath);
for (int i = 0; i < this.lstNameVal.Items.Count; i++)
{
string[] s = this.lstNameVal.Items[i].ToString().Split('=');
XmlNode coll = originalXml.SelectSingleNode("//Collection");
XmlNode det = originalXml.CreateNode(XmlNodeType.Element, "Details", null);
XmlAttribute xa = originalXml.CreateAttribute("Name");
xa.Value = s[0].ToString();
XmlAttribute xb = originalXml.CreateAttribute("Val");
xb.Value = s[1].ToString();
coll.AppendChild(det);
det.Attributes.Append(xa);
det.Attributes.Append(xb);
}
originalXml.Save(filepath);
}
else
{
fleStream = new FileStream("myxml.xml", FileMode.CreateNew, FileAccess.Write, FileShare.None);
stmWriter = new StreamWriter(fleStream);
xmlTxtWriter = new XmlTextWriter(stmWriter);
xmlTxtWriter.Formatting = Formatting.Indented;
xmlTxtWriter.WriteStartDocument();
xmlTxtWriter.WriteStartElement("Collection");
for (int i = 0; i < this.lstNameVal.Items.Count; i++)
{
string[] s = this.lstNameVal.Items[i].ToString().Split('=');
xmlTxtWriter.WriteStartElement("Details");
xmlTxtWriter.WriteAttributeString("Name", s[0].ToString());
xmlTxtWriter.WriteAttributeString("Val", s[1].ToString());
xmlTxtWriter.WriteEndElement();
}
xmlTxtWriter.WriteEndDocument();
xmlTxtWriter.Flush();
xmlTxtWriter.Close();
}
return true;
}
catch (IOException ex)
{
ex.ToString();
return false;
}
}
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