private List <ChangeDetails> CaptureChanges()
{
var changes = new List <ChangeDetails>();
if (!_dbContext.HasChanges())
{
return(changes);
}
var entries = _dbContext.ChangedEntries();
foreach (var entry in entries)
{
if (entry.State == EntityState.Unchanged || entry.State == EntityState.Detached)
{
continue;
}
var entityType = entry.Entity.GetType();
var entityKey = _dbContext.GetEntityKey(entry.Entity);
var changeDetails = new ChangeDetails(entry.State, entityKey, entry.Entity);
// Capture the property details
IEnumerable <PropertyDetails> properties = null;
if (entry.State == EntityState.Modified)
{
properties = entry.OriginalValues.PropertyNames
.Zip(entry.CurrentValues.PropertyNames, (c, o) =>
new PropertyDetails(c, entry.OriginalValues[c], entry.CurrentValues[c]));
}
else if (entry.State == EntityState.Added)
{
properties = entry.CurrentValues.PropertyNames
.Select(p => new PropertyDetails(p, null, entry.CurrentValues[p]));
}
else if (entry.State == EntityState.Deleted)
{
properties = entry.OriginalValues.PropertyNames
.Select(p => new PropertyDetails(p, null, entry.OriginalValues[p]));
}
foreach (var p in properties)
{
changeDetails.Properties.Add(p);
}
changes.Add(changeDetails);
}
return(changes);
}
