public void Add(T entity)
{
if (string.IsNullOrEmpty(entity.Id))
{
entity.Id = Guid.NewGuid().ToString();
}
_context.Set <T>().Add(entity);
Save();
_context.Entry(entity).State = EntityState.Detached;
}
public void Update <T>(T entity) where T : class
{
var entry = _context.Entry(entity);
entry.State = EntityState.Modified;
//如果数据没有发生变化
if (!_context.ChangeTracker.HasChanges())
{
entry.State = EntityState.Unchanged;
}
}