public static void UndoDbEntries <T>(this DbContextWithTriggers context) where T : class
{
if (context == null)
{
throw new ArgumentNullException();
}
foreach (var entry in context.ChangeTracker.Entries <T>())
{
switch (entry.State)
{
case EntityState.Added: {
entry.State = EntityState.Detached;
break;
}
case EntityState.Deleted: {
entry.Reload();
break;
}
case EntityState.Modified: {
entry.State = EntityState.Unchanged;
break;
}
default: break;
}
}
}
public static void UndoDbEntry(this DbContextWithTriggers context, object entity)
{
if (context == null || entity == null)
{
throw new ArgumentNullException();
}
var entry = context.Entry(entity);
switch (entry.State)
{
case EntityState.Added: {
entry.State = EntityState.Detached;
break;
}
case EntityState.Deleted: {
entry.Reload();
break;
}
case EntityState.Modified: {
entry.State = EntityState.Unchanged;
break;
}
default: break;
}
}
public static void UndoDbEntityProperty(this DbContextWithTriggers context, object entity, string propertyName)
{
if (context == null || entity == null || propertyName == null)
{
throw new ArgumentException();
}
try {
DbEntityEntry entry = context.Entry(entity);
if (entry.State == EntityState.Added || entry.State == EntityState.Detached)
{
return;
}
// Get and Set the Property value by the Property Name.
object propertyValue = entry.OriginalValues.GetValue <object>(propertyName);
entry.Property(propertyName).CurrentValue = entry.Property(propertyName).OriginalValue;
} catch {
throw;
}
}
