/// <summary>
/// EF的更新最好的办法就是先查询再修改，不然很麻烦
/// </summary>
/// <param name="obj"></param>
/// <param name="getPkHandler"></param>
public void Update(T obj, Func <T, object> getPkHandler)
{
using (var context = new ModernHisContext())
{
var key = getPkHandler.Invoke(obj);
var oldObj = context.Set <T>().Find(key);
if (oldObj != null)
{
ObjectRefletUtil.SetValue <T>(oldObj, obj);
context.Entry <T>(oldObj).State = EntityState.Modified;
context.SaveChanges();
}
}
}
public virtual T Update(T obj)
{
var key = ObjectRefletUtil.GetMainKeyValue(obj);
var oldObj = context.Set <T>().Find(key);
if (oldObj == null)
{
return(null);
}
ObjectRefletUtil.SetValue <T>(oldObj, obj);
context.Entry <T>(oldObj).State = EntityState.Modified;
context.SaveChanges();
return(oldObj);
}