如何将我的Form1 FRM变量分配给现有/加载的表单对象

Question

所以我有一个包含以下代码的处理程序：

    private static void DataReceivedHandler(object sender, SerialDataReceivedEventArgs e)
    {
        SerialPort sp = (SerialPort)sender;
        Form1 frm = //want to set 'frm' to the existing, instantiated form1 already running.
        string indata = sp.ReadExisting(); //stores the char that fired the event into 'indata'
        if (indata == "r") //check to see if char received indicates end of measurement, yes tells main form to add measurement, no tells to add char to string
        {
            frm.pendingMeasurement = true;
            MessageBox.Show(myString);
        }
        else
            myString += indata;
    }

在第4行上，我正在创建一个Form1对象，我想将其设置为现有的已运行的Form1对象。我如何访问该对象语法？

Answer 1

使Form1的行为有点像单身人士：

将静态Form1成员添加到Form1：

public static Form1 instance;

将其设置在Form1的构造函数中：

instance = this;

然后在您的代码中访问它：

Form1.instance