问题描述
我有一份声明
int A = 10,B=6,C=5;
和我想写一个打印功能,这样我整型变量传递给它,$ B $ ; b它打印我的变量名和值
and i want to write a print function such that i pass the int variable to it andit prints me the variable name and the value.
例如,如果我调用print(A)
必须返回A:10,并打印( b)则它必须返回b:6
eg if i call print(A)it must return "A: 10", and print (B) then it must return "B:6"
总之,我想知道我怎么可以访问该变量的名称,并将其打印到字符串在C#。我一定要使用反射?
in short i want to know how can i access the name of the variable and print it to string in c#. DO i have to use reflection?
阅读答案
大家好后,感谢提供的建议。我会尝试一下,但是我想知道,如果它是在所有可能的.NET 2.0吗?没有类似于
Hi all, thanks for the suggestions provided. I shall try them out, however i wanted to know if it is at all possible in .NET 2.0? Nothing similar to
#define prt(x) std::cout << #x " = '" << x << "'" << std::endl;
宏是存在于C / C ++?
macro which is there in C/C++?
推荐答案
唯一明智的方法,这样做将是使用表达
API;但还没有进一步的修改代码...
The only sensible way to do this would be to use the Expression
API; but that changes the code yet further...
static void Main() {
int A = 10, B = 6, C = 5;
Print(() => A);
}
static void Print<T>(Expression<Func<T>> expression) {
Console.WriteLine("{0}={1}",
((MemberExpression)expression.Body).Member.Name,
expression.Compile()());
}
请注意:如果这是为了调试的目的,一定要添加 [条件(DEBUG)]
来的方法,因为这种方法使用一个变量的变化以微妙的方式代码的性质。
Note: if this is for debugging purposes, be sure to add [Conditional("DEBUG")]
to the method, as using a variable in this way changes the nature of the code in subtle ways.
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