Home Database Mysql Tutorial 怎么动态取得逻辑表达式的值

怎么动态取得逻辑表达式的值

Jun 07, 2016 pm 03:14 PM
dynamic how how expression logic

如何 动态 取得 逻辑 表达 式的值 在SQLServer的存储过程中,可以通过EXEC语句执行 动态 的SQL语句。 那在.NetFramework里面可以 动态 的 取得 表达 式的值吗? 例如: 在文本框中输入字符串“1=3”或“35and'ab'='ab'”等等之类的字符串。 除了写代码分析这

如何动态取得逻辑表达式的值
在SQLServer的存储过程中,可以通过EXEC语句执行动态的SQL语句。

那在.Net Framework里面可以动态取得表达式的值吗?
例如:
在文本框中输入字符串“1 >= 3”或“3  5 and 'ab' = 'ab'”等等之类的字符串。
除了写代码分析这些字符串外,可不可以直接取得这些类似表达式的值?


------解决方案--------------------------------------------------------
你到网上找一些解析表达式的 代码,理解一下,然后可以自己写一个类,参考
------解决方案--------------------------------------------------------
引用:
自己写问题也不大,但想知道.Net Framework里面可不可以实现此功能。

我只能想到动态编译。
如果不用动态编译,那么就是解析。不管解析这个事情是.Net做还是你自己写东西去做,本质是一样的。
------解决方案--------------------------------------------------------
用 Linq 试试看。
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