/// <summary>
/// 修改员工的方法
/// </summary>
/// <param name="_em"></param>
/// <returns></returns>
public bool Update(EmployeeInfo _em)
{
//拿到当前对象
var me = t.Entry <EmployeeInfo>(_em);
//设置状态
me.State = System.Data.EntityState.Unchanged;
//得到当前泛型类的所有属性
PropertyInfo[] pt = _em.GetType().GetProperties();
for (int i = 0; i < pt.Length; i++)
{
//拿到要更新的字段
object obj = pt[i].GetValue(_em);
//更新
if (obj != null)
{
me.Property(pt[i].Name).IsModified = true;
}
}
return(t.SaveChanges() > 0);
}