如何获取所有局部变量的转储? [英] How to get a dump of all local variables?

问题描述

我怎样才能得到所有本地 & 的转储?发生异常时的会话变量?我正在考虑编写某种基于反射的函数来询问调用函数 &创建一个变量转储 &价值.

How can I get a dump of all local & session variables when an exception occurs? I was thinking of writing some sort of reflection based function that would interrogate the calling function & create a dump of variables & values.

是否有我可以使用的现有库?

Is there an existing library that I can use?

更新

在与一位同事交谈后，我被指出 AOP 或面向方面的编程.这是我的理解......使用AOP，可以简单地装饰方法&具有某些属性的类.AOP 框架然后在这些类中或周围注入代码 &方法.有两种不同的框架，一种是注入代码然后编译程序集 &第二个简单地使用反射 &捕获您已修饰的调用，并在运行时围绕该方法包装任何代码.

After speaking to a colleague, I was pointed to AOP or Aspect Oriented Programming. Here is what I understand ... Using AOP, one would simple decorate the methods & classes with certain attributes. AOP framework then injects code in or around these classes & methods. There are two separate kinds of framework, one that injects code & then compiles the assembly & the second simply uses reflection & traps the call which you have decorated and wraps whatever code around the method at runtime.

我希望一切都有意义.我将对此进行更多研究&发布我的方法.

I hope all that makes sense. I will be doing more research on this & post my approach.

谢谢大家...

推荐答案

我不确定这是否是您要找的.但是如果你在一个 catch-block 中，你可以通过以下方式获得这个类的所有字段和属性:

I'm not sure if this is what you're looking for. But if you're in a catch-block you can get all fields and properties of this class in the following way:

try
{
    double d = 1 / 0;
}
catch (Exception ex)
{
    var trace = new System.Diagnostics.StackTrace();
    var frame = trace.GetFrame(1);
    var methodName = frame.GetMethod().Name;
    var properties = this.GetType().GetProperties();
    var fields = this.GetType().GetFields(); // public fields
    // for example:
    foreach (var prop in properties)
    {
        var value = prop.GetValue(this, null);
    }
    foreach (var field in fields)
    {
        var value = field.GetValue(this);
    }
    foreach (string key in Session) 
    {
        var value = Session[key];
    }
}

为了完整起见，我已经展示了如何获取发生异常的方法名称.

I've showed how to get the method name where the exception occured only for the sake of completeness.

• Type.GetProperties 方法
• Type.GetFields 方法
• PropertyInfo.GetValue 方法
• FieldInfo.GetValue 方法
• StackTrace 类

使用 BindingFlags，您可以指定约束，例如你只想要这个类的属性而不是继承的:

With BindingFlags you can specify constraints, for example that you only want properties of this class and not from inherited:

在 .NET 反射中使用 GetProperties() 和 BindingFlags.DeclaredOnly

当然，上面应该只为您提供一个如何手动完成的起点，您应该将所有内容封装到类中.我自己从未使用过，因此未经测试.

Of course the above should give you only a starting-point how to do it manually and you should encapsulate all into classes. I've never used it myself so it's untested.

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