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How to use ListBox in C#Winfom

2025-01-18 Update From: SLTechnology News&Howtos shulou NAV: SLTechnology News&Howtos > Development >

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这篇文章主要介绍了C#Winfom中ListBox怎么用,具有一定借鉴价值,感兴趣的朋友可以参考下,希望大家阅读完这篇文章之后大有收获,下面让小编带着大家一起了解一下。

1、如何添加listBox的值

this.listBox1.Items.Add("张晓东");

2、如何判断listBox集合是否添加过

//检查添加值是否添加过if(this.listBox1.items.Contains("张晓东")){ MessageBox.show("集合成员已添加过!"); }else{ //执行添加集合成员}

3、如何获取listBox选中的值

//判断所有选中项集合大于0if(this.listBox1.SelectedItems.Count > 0){ //获取选中的值 this.listBox1.SelectedItem.ToString(); }else{ MessageBox.Show("未选中listbox集合的值"); }

4、如何移除listBox中存在的值

//移除listBox集合的项this.listBox1.Items.Remove("张晓东");

5、综合使用例子

简单实现人员从部门1转移到部门2或部门2转移到部门1

完整源码

using System;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 WindowsForms{ public partial class Form3 : Form { public Form3() { InitializeComponent(); } /// /// 添加人员到采购部门 /// /// /// private void btnInsert_Click(object sender, EventArgs e) { //获取添加人的值 string peopleText = this.txtPeople.Text.Trim().ToString(); //获取listbox1的对象 ListBox list1 = this.listBox1; //判断人员是否已经添加过 if (!list1.Items.Contains(peopleText)) { list1.Items.Add(peopleText); } else { MessageBox.Show("该人员已经添加过,无法重复添加!"); } } /// /// 将采购人员转移到销售部门 /// /// /// private void btnRightMove_Click(object sender, EventArgs e) { //获取listbox1的所有选中的项 if (this.listBox1.SelectedItems.Count > 0) { string checkPeople = this.listBox1.SelectedItem.ToString(); //判断是否添加到listbox2 if (!this.listBox2.Items.Contains(checkPeople)) { //添加人员到listbox2中 this.listBox2.Items.Add(checkPeople); //移除listbox1中 this.listBox1.Items.Remove(checkPeople); } else { MessageBox.Show("该人员已经转移过,无法重复转移!"); } } else { MessageBox.Show("未选中采购人员,无法转移销售部门!"); } } /// /// 将销售人员转移到采购部门 /// /// /// private void btnLeftMove_Click(object sender, EventArgs e) { //获取listbox2的所有选中的项 if (this.listBox2.SelectedItems.Count > 0) { string checkPeople = this.listBox2.SelectedItem.ToString(); //判断是否添加到listbox1 if (!this.listBox1.Items.Contains(checkPeople)) { //添加人员到listbox1中 this.listBox1.Items.Add(checkPeople); //移除listbox1中 this.listBox2.Items.Remove(checkPeople); } else { MessageBox.Show("该人员已经转移过,无法重复转移!"); } } else { MessageBox.Show("未选中销售人员,无法转移到采购部门!"); } } }}

感谢你能够认真阅读完这篇文章,希望小编分享的"C#Winfom中ListBox怎么用"这篇文章对大家有帮助,同时也希望大家多多支持,关注行业资讯频道,更多相关知识等着你来学习!

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