声明一个pubilc变量 [英] Declare a pubilc variable

问题描述

大家好。

我在Windows窗体中声明一个公共变量，并用这种形式的字符串初始化

现在我想以其他形式使用这个变量。但是新形式的变量是null。

我在做什么？

plz help

Hello guys.
I declare a public variable in a windows Form and it initializes with a string in this form
Now i wanna use this variable in other form.but variable in new form is null.
What am i doing ?
plz help

推荐答案

添加新的类的模块并在此模块中将此变量声明为public。



有关在C＃中作用域的更多信息： http://msdn.microsoft.com/en-us/library/aa691132%28v=vs.71%29.aspx [ ^ ]



示例： http： //stackoverflow.com/questions/2445436/global-variables-in-c-net [ ^ ]

Add new module of class and declare this variable as public in this module.

More about scoping in C#: http://msdn.microsoft.com/en-us/library/aa691132%28v=vs.71%29.aspx[^]

Example: http://stackoverflow.com/questions/2445436/global-variables-in-c-net[^]

使用单独的类文件...

Use a separate class file...

public static class GlobalVar
    {
        /// <summary>
        /// Global variable that is constant.
        /// </summary>
        public const string GlobalString = "Important Text";

        /// <summary>
        /// Static value protected by access routine.
        /// </summary>
        static int _globalValue;

        /// <summary>
        /// Access routine for global variable.
        /// </summary>
        public static int GlobalValue
        {
            get
            {
                return _globalValue;
            }
            set
            {
                _globalValue = value;
            }
        }

        /// <summary>
        /// Global static field.
        /// </summary>
        public static bool GlobalBoolean;
    }

如果要从任何地方访问变量，则应将其声明为静态。在这种情况下，一旦初始化 - 可以从项目中的任何地方读取该值。

If you want a variable to be accessed from anywhere then you should declare that as static. In that case once initialized - that value can be read from anywhere in the project.

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