vb.net VB.NET中带有动态第二个参数（类型）的CType
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CType in VB.NET with dynamic second parameter (type)
提问by Brij
In VB.NET CType can be used to convert one type to another.
在 VB.NET 中，CType 可用于将一种类型转换为另一种类型。
CType(expression,type)
I have the "expression" stored in an instance object class, say "objExp".
I have the "type" stored in an instance of Type class, say"objType".
我将“表达式”存储在实例对象类中，例如"objExp". 我将“类型”存储在 Type 类的实例中，例如"objType".
I am trying CType(objExp, objType)I am getting compile error, how should I go about it ? "objType" is fetched and assigned at runtime.
我正在尝试CType(objExp, objType)我收到编译错误，我该怎么办？" objType" 在运行时获取和分配。
回答by ESB Developer
Have you looked into the method CTypeDynamic()? The second parameter (ie: The Type) can be set dynamically. Great for when you are using Reflection.
你研究过CTypeDynamic()方法吗？第二个参数（即：Type）可以动态设置。非常适合使用反射。
For example:
例如：
CTypeDynamic(strValueToConvert, objTypeToConvertTo)
回答by JaredPar
This is simply not possible. The CTypeexpression must be passed a Typeinstance which is known at compile time like Integer, String, etc ... It does not accept values which are of type Type
这根本不可能。该CType表达式必须通过的Type这是在像编译时已知实例Integer，String等等......它不接受这是类型的值Type
