将以字符串形式编写的IF条件解析为C#代码 [英] Parse a IF Condition written in the String to C# Code

问题描述

示例:

条件:

如果A> B THEN

打印B

ELSE

打印A

此条件在SQL的表的列中以字符串形式编写.

我想从表中获取此条件，并将该条件转换为C#代码，如

如果(A> B)

{

打印B ...........

}

其他

{

打印A ...........

}

其中A和B是在C#中传递的动态值.

Example:

Condition:

IF A > B THEN

PRINT B

ELSE

PRINT A

This condition is written as a string in coloumn of the table in SQL.

I want to fetch this condition from the table and convert this condition to the C# Code as

If(A > B )

{

print B...........

}

else

{

print A...........

}

Where A and B are the Dynamic values passed in the C#.

推荐答案

为此，可以使用表达式求值器.
本文可能对您有帮助

数学/函数/布尔/字符串表达式评估器 [ ^ ]

来自上述文章的以下段落

因此，我开发了一组简单的类，称为ExpressionEval和FunctionEval.这些评估器处理数字，字符串，布尔值和日期时间数据类型，并且它们支持C#中可用的所有一元和二进制运算符.它们还支持函数(通过使用FunctionEval类)，并具有通过附加事件处理程序来添加自定义函数的功能，该事件处理程序将在找不到函数名称时触发."

可以看到可以处理字符串.

For this purpose the expression evaluator can be used.
This article may be helpful to you

math / function / boolean /string expression evaluator[^]

From the following paragraph of the above article

"Thus, I''ve developed a set of simple classes called ExpressionEval and FunctionEval. These evaluators handle numeric, string, boolean, and datetime datatypes, and they support all the unary and binary operators available in C#. They also support functions (through the utilization of FunctionEval class) and have the ability to add custom functions by attaching an event handler that fires when a function name is not found."

it can be seen that strings can be handled.

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