通过单击C＃中的按钮返回更新的列表

2024-05-18 • 问答

我有一个简单的窗体，带有一个面板，其中包含一个带有四个CheckButtons作为答案的问题。用户将浏览表格并为每个问题选择答案。他们点击按钮接受答案后（代码下方的“ buttonNewAnswer_Click”）答案将合并到名为“答案”的列表中，然后将其写入“结果”并设置其格式，以便可以将一行写入.csv文件。涵盖所有问题后，用户将单击“ buttonExit_Click”按钮并将“结果”写入.csv并退出应用程序。不幸的是，我无法从“ buttonNewAnswer_Click”到“ buttonExit_Click”获得“结果”列表。谢谢您的帮助/建议。

using System;
using System.IO;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace SIMPLE_FORM
{
    public partial class Form1 : Form
    {
        //public List<String> results = new List<String>();
    string myCsvFileTest = @"myFile.csv"


    // Button to update the answers list
        private void buttonNewAnswer_Click(object sender,EventArgs e)
        {

    // Algorithm to update the "answers" list

            var results = new StringBuilder();
            foreach (var i in answers)
            {
                results.AppendFormat("{0},",i.ToString());
            }
        }

    // Button to write the results to a .csv and then close the application
        private void buttonExit_Click(object sender,EventArgs e)
        {
            if (MessageBox.Show("Press \"Yes\" to confirm closing the Application"," ",MessageBoxButtons.Yesno) == DialogResult.Yes)
            {
                using (StreamWriter writer = new StreamWriter(myCsvFileTest,true,Encoding.UTF8))
                {
                    writer.WriteLine(results);  
                }
                System.Windows.Forms.Application.Exit();
            }
            else
            {
                this.activate();
            }
        }

我正在尝试从“ buttonNewAnswer_Click”中获取“结果”列表，并将其用于代码中的其他位置，例如“ buttonExit_Click”，以写入.csv

public partial class Form1 : Form { // declare and allocate StringBuilder results = new StringBuilder(); private void buttonNewAnswer_Click(object sender,EventArgs e) { // fill the results object foreach (var i in answers) { results.AppendFormat("{0},",i.ToString()); } } private void buttonExit_Click(object sender,EventArgs e) { // you can use the result here. // results } }

通过单击C＃中的按钮返回更新的列表

xaut2009 回答：通过单击C＃中的按钮返回更新的列表

大家都在问