Expression创建对象
http://www.cnblogs.com/coolcode/archive/2009/12/09/ExpressionCreateInstance.html
Expression
http://www.tuicool.com/articles/AZR3ua2
MemberInitExpression 类
可以动态构建对象
https://msdn.microsoft.com/zh-cn/library/system.linq.expressions.memberinitexpression.aspx
class Animal
{
public string Species {get; set;}
public int Age {get; set;}
}
public static void CreateMemberInitExpression()
{
System.Linq.Expressions.NewExpression newAnimal =
System.Linq.Expressions.Expression.New(typeof(Animal));
System.Reflection.MemberInfo speciesMember =
typeof(Animal).GetMember("Species")[0];
System.Reflection.MemberInfo ageMember =
typeof(Animal).GetMember("Age")[0];
// Create a MemberBinding object for each member
// that you want to initialize.
System.Linq.Expressions.MemberBinding speciesMemberBinding =
System.Linq.Expressions.Expression.Bind(
speciesMember,
System.Linq.Expressions.Expression.Constant("horse"));
System.Linq.Expressions.MemberBinding ageMemberBinding =
System.Linq.Expressions.Expression.Bind(
ageMember,
System.Linq.Expressions.Expression.Constant(12));
// Create a MemberInitExpression that represents initializing
// two members of the 'Animal' class.
System.Linq.Expressions.MemberInitExpression memberInitExpression =
System.Linq.Expressions.Expression.MemberInit(
newAnimal,
speciesMemberBinding,
ageMemberBinding);
Console.WriteLine(memberInitExpression.ToString());
// This code produces the following output:
//
// new Animal() {Species = "horse", Age = 12}
}
使用Expression Tree构建带有参数、本地变量和返回值的Lambda
http://blog.csdn.net/cauchy8389/article/details/23529857
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