/// <summary>
/// Enumerate the keys stored in the context and
/// serialize them to an XML blob
/// </summary>
private static string SerializeToXML(IEnumerable <string> keyCollection)
{
var sb = new StringBuilder();
using (var tw = new StringWriter(sb))
using (var xw = new XmlTextWriter(tw))
{
xw.WriteStartElement("loggingContext");
foreach (var key in keyCollection)
{
var frameData = new LoggingCallContextActiveFrameData(key);
object data;
xw.WriteStartElement(key);
if (frameData.TryGetValue(out data) && data != null)
{
xw.WriteString(data.ToString());
}
else
{
xw.WriteString("(Unknown)");
}
xw.WriteEndElement();
}
xw.WriteEndElement();
}
return(sb.ToString());
}
/// <summary>
/// Retrieves the current active value for the key
/// </summary>
public static bool TryGetContextData(string key, out object result)
{
LoggingCallContextActiveFrameData data = new LoggingCallContextActiveFrameData(key);
return(data.TryGetValue(out result));
}