我如何自动显示类的字符串中的所有属性和它们的值？ [英] How do I automatically display all properties of a class and their values in a string?

问题描述

想象一下，一个班有许多公共属性。出于某种原因，这是不可能重构这个类分成更小的子类。

Imagine a class with many public properties. For some reason, it is impossible to refactor this class into smaller subclasses.

我想添加一个toString覆盖，返回沿着线的东西：

I'd like to add a ToString override that returns something along the lines of:

Property 1: Value of property 1\n
Property 2: Value of property 2\n
...

有没有办法做到这一点？

Is there a way to do this?

推荐答案

我想你可以在这里用一点反思。看看<一href="http://msdn.microsoft.com/en-us/library/aky14axb.aspx"><$c$c>Type.GetProperties().

I think you can use a little reflection here. Take a look at Type.GetProperties().

private PropertyInfo[] _PropertyInfos = null;

public override string ToString()
{
    if(_PropertyInfos == null)
        _PropertyInfos = this.GetType().GetProperties();

    var sb = new StringBuilder();

    foreach (var info in _PropertyInfos)
    {
        var value = info.GetValue(this, null) ?? "(null)";
        sb.AppendLine(info.Name + ": " + value.ToString());
    }

    return sb.ToString();
}

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