如何将枚举转换为类型 [英] How to convert enum to type
问题描述
我有一个这样的枚举。
public enum eTypeVar
{
Int,
Char,
Float
};
,我想将其转换为类型,执行以下操作:
and I want to convert it to type , to do something like this:
eTypeVar type=eTypeVar .Int;
string str= eTypeVar.ToString .ToLower();
(str as type) a=1;
我该怎么做?
推荐答案
我想你需要的是:
Dictionary<eTypeVar, Type> _Types = new Dictionary<eTypeVar, Type> {
{ eTypeVar.Int, typeof(Int32) },
{ eTypeVar.Char, typeof(Char) },
{ eTypeVar.Float, typeof(Single) }
};
public Boolean Check(eTypeVar type, Object value)
{
return value.GetType() == _Types[type];
}
您不能将变量转换为另一个变量声明的类型。你应该重新考虑你的设计。无论如何,它不会使你在做什么。如果你知道你想使用一个int,那么为什么不声明它呢?
You cannot convert a variable into a type for another variable declaration. You should rethink your design. Anyway it doesn't make sence what you are doing. If you know that you want to use a int, why not declare it:
String name = "int";
int value = 1;
如果您想要有动态代码,您可以使用反射和通用方法。
If you want to have dynamic code for some reasons you could use Reflection and a generic method.
public void DoSomething<T>(T value)
{
....
}
然后你可以构造在运行时使用反射和调用它。但是在这个时候,我想你需要更多的C#基础来处理这个功能。
Then you can construct the method at runtime using reflection and invoke it. But at this time i think you need more basics of C# to work with this features.
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