/// <summary>
/// Return the first item found with MinPriority or higher. The item is removed from the ErrorList.
/// If no item matches the specified priority (or the list is empty), null is returned.
/// </summary>
/// <param name="minPriority"></param>
/// <returns>entry or null</returns>
public ErrorLogItem GetFirstItem(ErrorPriorities minPriority)
{
lock ( mResourceLock )
{
// Don't use 'ErrorList' -- we can't remove the item...
foreach (ErrorLogItem item in mList)
{
if ((int)item.Priority >= (int)minPriority)
{
// Remove the item from the ErrorList
mList.Remove(item);
return(item);
}
}
// If not in the local list, check the children
foreach (IErrorLog child in mChildLogs)
{
ErrorLogItem item = child.GetFirstItem(minPriority);
if (item != null)
{
return(item);
}
}
}
return(null);
}
/// <summary>
/// Throws the first item found with MinPriority or higher. The item is removed from the ErrorList.
/// InnerException will contain the original StackTrace. If no item matches the specified priority
/// (or the list is empty), no exception is thrown.
/// </summary>
/// <param name="minPriority"></param>
public void ThrowFirstItem(ErrorPriorities minPriority)
{
ErrorLogItem item = GetFirstItem(minPriority);
if (item != null)
{
// Don't directly throw the original item.Exception because throwing will
// overwrite its StackTrace. Instead, wrap it in a new exception
// of the same type, with the original exception as InnerException.
Exception ex = (Exception)Activator.CreateInstance(
item.Exception.GetType(),
new object[] { item.Message, item.Exception });
// bye bye...
throw ex;
}
}
/// <summary>
/// Logs an Exception.
/// </summary>
/// <param name="ex">Exception to be logged</param>
/// <param name="priority">WARNING or ERROR</param>
protected void AddException(Exception ex, ErrorPriorities priority)
{
ErrorLogItem item;
lock ( mResourceLock )
{
// this is a good place to print errors in debug builds
Debug.Print(String.Format("{0} {1}: {2}", mSource, priority, ex.Message));
item = new ErrorLogItem {
Priority = priority, Source = mSource, Exception = ex
};
mList.Add(item);
}
// if anyone is listening, raise an event.
if (ErrorLogItemAdded != null)
{
ErrorLogItemAdded(this, new ErrorLogItemAddedArgs(item));
}
}
public ErrorLogItemAddedArgs(ErrorLogItem item)
{
Item = item;
}