本文介绍了ToUpper的()在防爆pression.Call的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
下面工作的code,但我想介绍一个 ToUpper的()
The code below work, but I'd like introduce a ToUpper()
var predicate =
Expression.Lambda<Func<T, bool>>(
Expression.Call(
Expression.PropertyOrField(parameter, "FirstName"),
"Contains", null,
Expression.Constant("myvalue".ToUpper())), parameter
);
结果是:
{Param_0 => Param_0.FirstName.Contains("MYVALUE")}
不过,我想这样的:
But I'd like this :
{Param_0 => Param_0.FirstName.ToUpper().Contains("MYVALUE")}
我如何更改?
How can I change ?
推荐答案
只需添加一个防爆pression.Call
:
var predicate =
Expression.Lambda<Func<T, bool>>(
Expression.Call(
Expression.Call( // <=== this one is new
Expression.PropertyOrField(parameter, "FirstName"),
"ToUpper", null),
"Contains", null,
Expression.Constant("myvalue".ToUpper())), parameter
);
然后自己报告如下:
which then reports itself as:
Param_0 => Param_0.FirstName.ToUpper().Contains("MYVALUE")
这篇关于ToUpper的()在防爆pression.Call的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!