private static void context_SavingChanges(object sender, EventArgs e)
{
// Find any new or modified entities using our user/timestampting
// fields and update them accordingly.
foreach (ObjectStateEntry entry in
((ObjectContext)sender).ObjectStateManager.GetObjectStateEntries
(EntityState.Added | EntityState.Modified))
{
// Only work with entities that have our user/timestamp records in them.
try
{
if (!entry.IsRelationship)
{
CurrentValueRecord entryValues = entry.CurrentValues;
System.Collections.Specialized.NameValueCollection updateField = CheckEntityUpdateField(entry.CurrentValues);
HttpContext currContext = HttpContext.Current;
int userId = -1;
DateTime now = DateTime.Now;
if (currContext != null)
{
if (currContext.User.Identity.IsAuthenticated)
{
if (currContext.Session != null && currContext.Session["userId"] != null)
{
userId = (int)currContext.Session["userId"];
}
else
{
//userId = Security.GetUserId(currContext.User.Identity.Name);
}
}
}
if (entry.State == EntityState.Modified)
{
if (updateField["updater_id"] == "true")
{
entryValues.SetInt32(entryValues.GetOrdinal("updater_id"), userId);
}
if (updateField["updated_at"] == "true")
{
entryValues.SetDateTime(entryValues.GetOrdinal("updated_at"), now);
}
}
if (entry.State == EntityState.Added)
{
// If creator/updater values have not already been set,
// default them to the current user/time. We will already have
// creator/updater for version records.
for (int x = 0; x < updateField.Count; x++)
{
string key = updateField.Keys[x];
if (key.Contains("_id") && updateField[x] == "true")
{
// Sometimes when a new object is created, the creator_id is defaulted
// to 0. This is invalid for our processing.
if (entryValues.IsDBNull(entryValues.GetOrdinal(key)) ||
entryValues.GetInt32(entryValues.GetOrdinal(key)) == 0
)
{
entryValues.SetInt32(entryValues.GetOrdinal(key), userId);
}
}
else if (updateField.Keys[x].Contains("_at") && updateField[x] == "true")
{
// Sometimes when a new object is created, the year is defaulted to
// 1/1/0001. This is an invalid year or our processing
if (entryValues.IsDBNull(entryValues.GetOrdinal(key)) ||
entryValues.GetDateTime(entryValues.GetOrdinal(key)).Year == 1
)
{
entryValues.SetDateTime(entryValues.GetOrdinal(key), now);
}
}
}
}
}
}
catch (Exception ex)
{
//Elmah.ErrorSignal.FromCurrentContext().Raise(ex);
}
}
}