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我正在尝试将表达式树导出到PE程序集作为主要入口点.我通过构建表达式树获得了Lambda Expression,例如:

using System.Linq;
using System;

// 1. use expression trees to create a block expression (not shown)

// 2. create a lambda expression: 
LambdaExpression exprLambda = Expression.Lambda(exprBlock, new ParameterExpression[0]);

MethodBuilder mbuilder = null;
// 3. ??? Somehow get a method builder instance that works ??? 

// 4. Compile the lambda using the MethodBuilder instance. 
exprLambda.CompileToMethod(mbuilder);

// 5. ??? Somehow get an AssemblyBuilder instance to .Save(..) this to disk.  ??? 

第3步和第5步是我所缺少的.