/// <summary>
/// Save given data to configuration file.
/// </summary>
/// <typeparam name="T">The type of the data that has to be saved.</typeparam>
/// <param name="sectionData">The data that has to be saved in the configuration file.</param>
public static void SaveSection <T>(T sectionData) where T : class
{
s_CfgMutex.WaitOne();
foreach (IConfigSource source in s_Sources.Where(s => !s.IsReadOnly))
{
XmlSerializer xs = new XmlSerializer(typeof(T));
//use a memory stream to holt temporary output in order to be able to modify sections in the middle of the file.
using (MemoryStream ms = new MemoryStream())
{
Stream dataStream = source.Open();
using (XmlReader xr = XmlReader.Create(dataStream, s_ReaderSettings))
{
using (XmlWriter xw = XmlWriter.Create(ms, s_WriterSettings))
{
//states need to be maually changed otherwise XmlSerializer try to write start document node
//that for Fragment xml throw an exception.
xw.FakeWrite();
//flag to indicate if the section already exists
bool dataWritten = false;
xr.MoveToContent();
//check if file is empty
if (xr.NodeType != XmlNodeType.None)
{
//loop over all available sections
while (xr.NodeType == XmlNodeType.Element)
{
if (xr.Name != GetSectionName <T>())
{
//if not requested section copy it to output
xw.WriteNode(xr.ReadSubtree(), false);
}
else
{
xs.Serialize(xw, sectionData, new XmlSerializerNamespaces(new[] { XmlQualifiedName.Empty }));
dataWritten = true;
}
//move to next section
xr.Skip();
}
}
if (!dataWritten)
{
//section has not been found, create it
xs.Serialize(xw, sectionData, new XmlSerializerNamespaces(new[] { XmlQualifiedName.Empty }));
}
}
}
//update the settings file with the data stored in the temporary memory stream
dataStream.Seek(0, SeekOrigin.Begin);
dataStream.SetLength(0);
dataStream.Write(ms.GetBuffer(), 0, (int)ms.Length);
source.Close();
}
}
s_CfgMutex.ReleaseMutex();
}
