tip: Open XML Dataset in append mode

[Egbert Nierop \(MVP for IIS\)]

See code below

It writes only changes, by appending new records at the end of the file.

public static void Main()

{
Dataset1 d = new Dataset1();
Stream str = new FileStream(@"c:\somedata.xml", FileMode.OpenOrCreate,
FileAccess.ReadWrite, FileShare.None);

if (str.Length > 0)

d.ReadXml(str);

Dataset1.somedataRow dr = d.somedata.NewsomedataRow();

dr.Data = "blah " + Environment.TickCount.ToString();

d.somedata.AddsomedataRow(dr);

str.Position=0;

d.GetChanges().WriteXml(str);
str.Close();

}