在类构造函数中设置默认值 C#

发布于 2024-10-21 00:20:57 字数 341 浏览 1 评论 0原文

我需要一个默认值设置以及许多不同的页面访问和更新..最初我可以像这样在类构造函数中设置默认值吗？在 C# .NET 中执行此操作的正确方法是什么？

public class ProfitVals
{

    private static double _hiprofit;

    public static Double HiProfit
    {
        get { return _hiprofit; }

        set { _hiprofit = value; }
    }

    // assign default value

    HiProfit = 0.09;

}

原文

I need a default value set and many different pages access and update..initially can I set the default value in the class constructor like this? What is the proper way to do this in C# .NET?

public class ProfitVals
{

    private static double _hiprofit;

    public static Double HiProfit
    {
        get { return _hiprofit; }

        set { _hiprofit = value; }
    }

    // assign default value

    HiProfit = 0.09;

}

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皓月长歌 2024-10-28 00:20:57

您可以将其放在声明中：private static double _hiprofit = 0.09;
或者，如果这是一个更复杂的初始化，您可以在静态构造函数中完成：

   private static double _hiprofit; 
   static ProfitVals() 
   {
      _hiprofit = 0.09;
   }

首选前者，因为后者会降低性能：http://blogs.msdn.com/b/brada/archive/2004/04/17/115300.aspx

You can put it in the declaration: private static double _hiprofit = 0.09;
Or if it's a more complicated initialization you can do it in the static constructor:

   private static double _hiprofit; 
   static ProfitVals() 
   {
      _hiprofit = 0.09;
   }

The former is preferred as the latter pays a performance penalty: http://blogs.msdn.com/b/brada/archive/2004/04/17/115300.aspx

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原谅我要高飞 2024-10-28 00:20:57

不，您必须使用实际的静态构造函数包围对属性的赋值，如下所示：

class ProfitVals
{
    public static double HiProfit { ... }

    static ProfitVals()  // static ctor
    {
       HiProfit = 0.09;
    }
}

注意：静态构造函数不能声明为私有/公共，并且不能具有参数。

No, you would have to surround the assignment to the property with an actual static constructor like so:

class ProfitVals
{
    public static double HiProfit { ... }

    static ProfitVals()  // static ctor
    {
       HiProfit = 0.09;
    }
}

Note: a static constructor can not be declared private/public and cannot have parameters.

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心的位置 2024-10-28 00:20:57

您就快完成了，您只需要使用构造函数。

public class ProfitVals {
    private static double _hiprofit;

    public static Double HiProfit
    {
        get { return _hiprofit; }

        set { _hiprofit = value; }
    }

    public ProfitVals() {
        // assign default value
        HiProfit = 0.09;
    }
}

You're almost there, you just need to use a constructor.

public class ProfitVals {
    private static double _hiprofit;

    public static Double HiProfit
    {
        get { return _hiprofit; }

        set { _hiprofit = value; }
    }

    public ProfitVals() {
        // assign default value
        HiProfit = 0.09;
    }
}

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