看到园子的很多大牛最近 表达式树 这一快弄的挺热闹，我也来照葫芦画瓢一下数据结构虽然不好，但是这点底子还是有的............... 中序遍历表达式树   static String MidTraversalExpressionTress(Expression expressTree) { ConstantExpr

This topic describes how to use expression trees to create dynamic LINQ queries. Dynamic queries are useful when the specifics of a query are not known at compile time. For example, an application m

Only expression trees that represent lambda expressions can be executed. Expression trees that represent lambda expressions are of type LambdaExpression or Expression)>). To execute these expression t

Only those expression trees that represent functions, namely Expression(Of (TDelegate>)>) and its parent type LambdaExpression, can be compiled into executable code. To execute other types of expressi

This topic shows you how to execute an expression tree. Executing an expression tree may return a value, or it may just perform an action such as calling a method.Only expression trees that repres

         static bool GetStringLength( string str)        {            Expression> exp = ss => ss.Contains("a");                      return exp.Compile()(str);        }