将Combobox（使用ArrayList集合）行添加到richtextbox。一次一行。

问题描述

我是C＃的新手，我创建了一个文本编辑Windows窗体。我的表格上有一个Combobox，我使用和arraylist集合（强制性）为我的Combobox添加了值。现在我想将这些值添加到我的richtextbox中。当我点击组合框中的一行时，
该行应该添加到richtextbox中。有人可以帮忙吗？什么代码需要在"comboBox1_SelectedIndexChanged"中???

Hi, I'm new to C# and I created a text editing Windows Form. I have a Combobox on my form, and I have added values to my Combobox using and arraylist collection (mandatory). Now I want to add those values to my richtextbox. When I click on a line in my combobox, that line should be added to the richtextbox. Can someone help pls? What code needs to be in "comboBox1_SelectedIndexChanged"???

这是我到目前为止所得到的：

       

This is what I've got so far:
       

         private void comboBox1_Click（object sender，EventArgs e）

        {           

            ArrayList presetWords = new ArrayList（）;

            presetWords.Add（" Outstanding"）;&
            presetWords.Add（" Super"）;

            presetWords.Add（"做得好"）;
$
            presetWords.Add（" Good job"）;

            presetWords.Add（"Well well"）;

            presetWords.Add（" Good going"）;

            presetWords.Add（"几乎在那里"）;

            presetWords.Add（"稍微努力一点"）;

            presetWords.Add（"下次更好运"）;

            presetWords.Add（" Sorry"）;

            comboBox1.DataSource = presetWords;

            comboBox1.SelectedIndex = 0;        

        }


        private void comboBox1_SelectedIndexChanged（object sender，EventArgs e）

        {

            

        }

         private void comboBox1_Click(object sender, EventArgs e)
        {           
            ArrayList presetWords = new ArrayList();
            presetWords.Add("Outstanding");
            presetWords.Add("Super");
            presetWords.Add("Well done");
            presetWords.Add("Good job");
            presetWords.Add("Well played");
            presetWords.Add("Good going");
            presetWords.Add("Almost there");
            presetWords.Add("Try a bit harder");
            presetWords.Add("Better luck next time");
            presetWords.Add("Sorry");
            comboBox1.DataSource = presetWords;
            comboBox1.SelectedIndex = 0;        
        }

        private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
        {
            
        }

推荐答案

希望这可以帮到你

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

namespace WindowsFormsApplication2
{
    public partial class Form4 : Form
    {
        public Form4()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            try
            {
                ArrayList presetWords = new ArrayList();
                presetWords.Add("Outstanding");
                presetWords.Add("Super");
                presetWords.Add("Well done");
                presetWords.Add("Good job");
                presetWords.Add("Well played");
                presetWords.Add("Good going");
                presetWords.Add("Almost there");
                presetWords.Add("Try a bit harder");
                presetWords.Add("Better luck next time");
                presetWords.Add("Sorry");
                comboBox1.DataSource = presetWords;
                comboBox1.SelectedIndex = 0;        
            }
            catch (Exception ex) { string errormsg = ex.ToString(); }
        }

        private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
        {
            try
            {
                richTextBox1.Text += comboBox1.SelectedItem.ToString() + System.Environment.NewLine;
            }
            catch (Exception ex) { string errormsg = ex.ToString(); }
        }
    }
}

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