当我运行时:
MethodInfo m = typeof(Expression).GetMethod("Lambda", new Type[]{typeof(Expression), typeof(ParameterExpression[])});
我得到:
System.Reflection.AmbiguousMatchException: Ambiguous match found.
这是为了一般地做到这一点(而不是知道它是一个字符串)
var newExpression = Expression.Lambda<Func<T, string>>(propertyExpression, parameters);
return entities.OrderBy(newExpression);
编辑:附加信息:
跑步:
typeof(Expression).GetType().GetMethod("GetMethodCandidates", BindingFlags.NonPublic | BindingFlags.Instance).Invoke(typeof(Expression),new object[]{"Lambda", BindingFlags.Static| BindingFlags.Public, CallingConventions.Standard,new Type[]{typeof(Expression), typeof(ParameterExpression).MakeArrayType()},false})
返回数组:
[0]: {System.Linq.Expressions.Expression`1[TDelegate] Lambda[TDelegate](System.Linq.Expressions.Expression, System.Linq.Expressions.ParameterExpression[])}
[1]: {System.Linq.Expressions.Expression`1[TDelegate] Lambda[TDelegate](System.Linq.Expressions.Expression, System.Collections.Generic.IEnumerable`1[System.Linq.Expressions.ParameterExpression])}
[2]: {System.Linq.Expressions.LambdaExpression Lambda(System.Linq.Expressions.Expression, System.Linq.Expressions.ParameterExpression[])}
[3]: {System.Linq.Expressions.LambdaExpression Lambda(System.Linq.Expressions.Expression, System.Collections.Generic.IEnumerable`1[System.Linq.Expressions.ParameterExpression])}