c# - 如何在同一个句子中添加(附加)一个单词，每个单词使用一个按钮(单击)

Question

我非常感谢任何帮助。我有 20 多个按钮，每个按钮都有一个词、一个空格或句号。每次我点击一个按钮，之前存在的单词就会被删除并被新单词替换。在单击“清除”按钮之前，我需要每个单词和/或空格都保留在原位。

也许这个问题之前已经在不同的搜索词下被问过/回答过？我倾向于认为我需要识别一个字符串变量，但不知道如何开始。

==============

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;

namespace WindowsFormsApplication1
{
    public partial class frmSentenceBuilder : Form
    {
        public frmSentenceBuilder()
        {
            InitializeComponent();
        }

        private void frmSentenceBuilder_Load(object sender, EventArgs e)
        {

        }

        private void btnA_Click(object sender, EventArgs e)
        {
            lblSentenceText.Text = btnA.Text;
        }

        private void btn_a_Click(object sender, EventArgs e)
        {
            lblSentenceText.Text = btn_a.Text;
        }

        private void btnAn_Click(object sender, EventArgs e)
        {
            lblSentenceText.Text = btnAn.Text;
        }

        private void btn_an_Click(object sender, EventArgs e)
        {
            lblSentenceText.Text = btn_an.Text;
        }

        private void btnThe_Click(object sender, EventArgs e)
        {
            lblSentenceText.Text = btnThe.Text;
        }

        private void btn_the_Click(object sender, EventArgs e)
        {
            lblSentenceText.Text = btn_the.Text;
        }

        private void btnman_Click(object sender, EventArgs e)
        {
            lblSentenceText.Text = btnman.Text;
        }

        private void btnwoman_Click(object sender, EventArgs e)
        {
            lblSentenceText.Text = btnwoman.Text;
        }

        private void btndog_Click(object sender, EventArgs e)
        {
            lblSentenceText.Text = btndog.Text;
        }

        private void btncat_Click(object sender, EventArgs e)
        {
            lblSentenceText.Text = btncat.Text;
        }

        private void btncar_Click(object sender, EventArgs e)
        {
            lblSentenceText.Text = btncar.Text;
        }

        private void btnbicycle_Click(object sender, EventArgs e)
        {
            lblSentenceText.Text = btnbicycle.Text;
        }

        private void btnbeautiful_Click(object sender, EventArgs e)
        {
            lblSentenceText.Text = btnbeautiful.Text;
        }

        private void btnbig_Click(object sender, EventArgs e)
        {
            lblSentenceText.Text = btnbig.Text;
        }

        private void btnsmall_Click(object sender, EventArgs e)
        {
            lblSentenceText.Text = btnsmall.Text;
        }

        private void btnstrange_Click(object sender, EventArgs e)
        {
            lblSentenceText.Text = btnstrange.Text;
        }

        private void btnlookedat_Click(object sender, EventArgs e)
        {
            lblSentenceText.Text = btnlookedat.Text;
        }

        private void btnrode_Click(object sender, EventArgs e)
        {
            lblSentenceText.Text = btnrode.Text;
        }

        private void btnspoketo_Click(object sender, EventArgs e)
        {
            lblSentenceText.Text = btnspoketo.Text;
        }

        private void btnlaughedat_Click(object sender, EventArgs e)
        {
            lblSentenceText.Text = btnlaughedat.Text;
        }

        private void btndrove_Click(object sender, EventArgs e)
        {
            lblSentenceText.Text = btndrove.Text;
        }

        private void btnSpace_Click(object sender, EventArgs e)
        {
            lblSentenceText.Text = " ";
        }

        private void btnperiod_Click(object sender, EventArgs e)
        {
            lblSentenceText.Text = btnperiod.Text;
        }

        private void btnexclam_Click(object sender, EventArgs e)
        {
            lblSentenceText.Text = btnexclam.Text;
        }

        private void btnClear_Click(object sender, EventArgs e)
        {
            lblSentenceText.Text = "";
        }

        private void btnExit_Click(object sender, EventArgs e)
        {
            this.Close();
        }
    }
}

Answer 1

使用 lb1SentenceText.Text+=whatever.Text;。

+= 等同于 lbSentence.Text = lblSentenceText.Text + whatever.Text。

基本上，它将右侧的 string 附加或连接到左侧的 string。希望它有意义？

所以:

string rhs="Hello " ;
string lhs = "World";
string rhs = rhs + lhs;//Hello World