C# 无法将GetBytes方法转换为存储表达式

我正在使用

LINQ

根据特定条件选择列表。属性值存储在

字节数组中

，稍后在存储在数据库表中时对其进行加密。我现在想在我的

选择LINQ

查询中使用此属性，但当我尝试时，它会引发以下异常：

LINQ to Entities does not recognize the method 'Byte[] GetBytes(System.String)' method, and this method cannot be translated into a store expression.

这是我使用的代码：

var result = (from history in context.Histories
                              where history.ID == Id & 
                              (history.Salary != null || history.Salary != Encoding.ASCII.GetBytes("0"))
                              select (DateTime?)history.Date).Max();
                return result;

---

我想从历史记录表中选择工资不等于null或0的id的日期。如何更改此设置？

只需先获取字节：

var bytes = Encoding.ASCII.GetBytes("0");

var result = (from history in context.Histories
                              where history.ID == Id & 
                          (history.Salary != null || history.Salary != bytes)
                          select (DateTime?)history.Date).Max();
            return result;

---

只需先获取字节：

var bytes = Encoding.ASCII.GetBytes("0");

var result = (from history in context.Histories
                              where history.ID == Id & 
                          (history.Salary != null || history.Salary != bytes)
                          select (DateTime?)history.Date).Max();
            return result;

将代码更改为：

var bytes = Encoding.ASCII.GetBytes("0");
var result = (from history in context.Histories
                          where history.ID == Id & 
                          (history.Salary != null || history.Salary != bytes)
                          select (DateTime?)history.Date).Max();
            return result;

LINQ将查询转换为SQL时无法计算GetBytes将代码更改为：

var bytes = Encoding.ASCII.GetBytes("0");
var result = (from history in context.Histories
                          where history.ID == Id & 
                          (history.Salary != null || history.Salary != bytes)
                          select (DateTime?)history.Date).Max();
            return result;

---

LINQ在将查询转换为SQL时无法计算GetBytes的值

谢谢！工作得很有魅力！非常感谢。工作得很有魅力！