谁做过这样的逻辑

[鲁虾]

例如类Value
Value.A=1
Value.B=5
Value.C=10
数据库中取出的运算公式串为
(A=1) and (B>2) and (C<6)
怎么样替代

算出逻辑值来
。。。。。

[blestcc]

什么公式？公式做什么用的？算出什么邏輯值？

[CeShenBeiWang]

mark !

[鲁虾]

找到了一个
public class Eval
{
public static object GetValue(string value)
{
string codeSnippet = "using System; " + "\r\n" +
"namespace CzG {" + "\r\n" +
" public class Eval" + "\r\n" +
" {" + "\r\n" +
" public Eval(){} " + "\r\n" +
" public object GetValue()" + "\r\n" +
" {" + "\r\n" +
" return " + value + ";" + "\r\n" +
" }" + "\r\n" +
" } }";
CodeSnippetCompileUnit unit = new CodeSnippetCompileUnit(codeSnippet);
ICodeCompiler compiler = new CSharpCodeProvider().CreateCompiler();
CompilerParameters para = new CompilerParameters();
para.ReferencedAssemblies.Add("System.dll");
para.GenerateInMemory = true;
para.GenerateExecutable = false;
para.OutputAssembly = "Eval.dll";

Assembly asm = compiler.CompileAssemblyFromDom(para, unit).CompiledAssembly;

Type type = asm.GetType("CzG.Eval");
MethodInfo mi = type.GetMethod("GetValue", BindingFlags.Public | BindingFlags.Instance);

object obj = asm.CreateInstance("CzG.Eval");
return mi.Invoke(obj, null);
}
}


bool a= Convert.ToBoolean(Eval.GetValue("125<23" ));

[wade_li]

是这个意思？
(Value.A==1)& (Value.B>2) & (ValueC <6)

[绿色夹克衫]

将1,2,6作为类初始化时的参数new Value(1,2,6),如果要加入逻辑符号的话,就改为new Value(1,2,6,sya,syb,syc)

将A B C换为属性,在赋值的时候可以判断是否符合条件