C＃等效于C ++宏和使用自动<>属性 [英] C# Equivalent for C++ Macros and using Auto<> Properties

问题描述

我有一些自动实例代码，我想申请到大约15属性在一个相当大的类。该代码是类似于以下，但在类型是不同的为每个实例：

I have some auto-instantiation code which I would like to apply to about 15 properties in a fairly big class. The code is similar to the following but the type is different for each instance:

protected ComplexType _propertyName;
public ComplexType PropertyName
{
    get
    {
        if (_propertyName == null)
            _propertyName = new ComplexType();

        return _propertyName;
    }
}

在C重复这一++（因为有〜15实例），我会使用的预处理宏的，但我发现C＃不支持他们。

To repeat this in C++ (as there are ~15 instances), I would have used a preprocessor macro but I notice C# doesn't support them.

我想知道如果任何人有一个建议，如何做到这一点干净的C＃？

I am wondering if anyone has a recommendation on how to do this cleanly in C#?

推荐答案

这可能使事情更简洁，可以添加这个方法来介绍一些重用：

This might make things a bit neater, you could add this method to introduce some reuse:

protected ComplexType _propertyName;
public ComplexType PropertyName
{
    get
    {
        return GetProperty(ref _propertyName);
    }
}
.
.
private T GetProperty<T>(ref T property) where T : new()
{
  if (property == null)
    property = new T();
  return property;
}

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