无法在 Windows 窗体中使用数组

Question

我正在尝试初始化一个数组，将其设置为保存其他变量，然后在用户按下表单上的按钮时使用它。当我尝试使用 button1_Click 类中的数组时，它无法识别它并说它在当前设置中不存在。namespace WindowsFormsApp1{    public partial class Form1 : Form    {        string activity;        int activityTime;        bool enteredInt = false;        //initializes variables used to store activities        string activity1 = "";        string activity2 = "";        string activity3 = "";        string activity4 = "";        string activity5 = "";        //intitializes variables used to store activity times        int activityTime1 = 0;        int activityTime2 = 0;        int activityTime3 = 0;        int activityTime4 = 0;        int activityTime5 = 0;        int i;        public Form1()        {            InitializeComponent();            string[] activities = { activity1, activity2, activity3, activity4, activity5 };            int[] activityTimes = { activityTime1, activityTime2, activityTime3, activityTime4, activityTime5 };        }        private void label1_Click(object sender, EventArgs e)        {        }        private void button1_Click(object sender, EventArgs e)        {            enteredInt = Int32.TryParse(textBox2.Text, out activityTime);            if (textBox1.Text != "" && textBox2.Text != "" && enteredInt == true)            {                activity = textBox1.Text;                activityTime = Int32.Parse(textBox2.Text);            }            else            {                MessageBox.Show("Please enter valid activity and time.");            }            for(i=0;i<5;i++)            {                if (activity==activities[i])                {                    activity += activities[i];                    i = 5;                }            }        }        private void textBox1_TextChanged(object sender, EventArgs e)        {        }        private void textBox2_TextChanged(object sender, EventArgs e)        {        }    }}对不起，如果这是一个愚蠢的问题，我真的需要回答。

Answer 1

你应该定义 int[]activityTimes 作为一个全局变量，把它放在外面

public partial class Form1 : Form

{

    string activity;

    int activityTime;

    bool enteredInt = false;

    //initializes variables used to store activities

    string activity1 = "";

    string activity2 = "";

    string activity3 = "";

    string activity4 = "";

    string activity5 = "";

    //intitializes variables used to store activity times

    int activityTime1 = 0;

    int activityTime2 = 0;

    int activityTime3 = 0;

    int activityTime4 = 0;

    int activityTime5 = 0;

    int i;

    string[] activities=new string[length];

    public Form1()

    {

        InitializeComponent();

    }

}