C#学习笔记——WinForm开发

一、控件
- 1、WebBrowser
- - 1>属性
- 2、ComboBox
- - 1>属性
  - 2>事件
- 3、ListBox
- - 1>属性
  - 2>事件
- 4、Panel
- 5、DataGridView
二、对话框
- 1、打开文件对话框
- 2、保存文件对话框
- 3、字体和颜色对话框
三、案例代码
- 1、浏览器
- 2、日期选择器
- 3、双击显示图片
- 4、剪刀石头布
- 5、记事本应用程序
- 6、音乐播放器
- 7、酷狗播放器简易版

一、控件

1、WebBrowser

浏览器控件

1>属性

Url：导航的网址（在属性栏输入时会自动补全http://）

2、ComboBox

下拉框控件：建议以cbo…格式命名

1>属性

Items：下拉框中的显示内容（可在属性栏中的编辑项、Items以及点击控件上的小三角进行输入）
DropDownStyle：控制下拉框的外观格式

2>事件

SelectedIndexChanged：当前下拉框中的值被选中的时候发生事件

3、ListBox

集合：类似于音乐播放的菜单栏，属性与事件与ComboBox类似

1>属性

Items：下拉框中的显示内容（可在属性栏中的编辑项、Items以及点击控件上的小三角进行输入）

2>事件

DoubleClick：双击时触发事件

4、Panel

容器：与GroupBox类似

5、DataGridView

用于显示表格数据
更改中文表名并绑定相关数据列的操作

二、对话框

OpenFileDialog：打开文件对话框
SaveFileDialog：保存文件对话框
FontDialog：字体对话框
ColorDialog：颜色对话框

1、打开文件对话框

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;
using System.IO;namespace 文本框
{public partial class Form1 : Form{public Form1(){InitializeComponent();}private void button1_Click(object sender, EventArgs e){//点击弹出对话框OpenFileDialog ofd = new OpenFileDialog();//设置对话框标题ofd.Title = "请选择需要打开的文档";//设置对话框可以多选ofd.Multiselect = true;//设置对话框的初始目录ofd.InitialDirectory = @"C:\Users\Administrator\Desktop";//设置对话框的文件类型ofd.Filter = "文本文件|*.txt|媒体文件|*.wav|图片文件|*.jpg|所有文件|*.*";//展示对话框ofd.ShowDialog();//获得 在打开对话框中  被选中文件的全路径string path = ofd.FileName;if (path == "")return;using (FileStream fsRead = new FileStream(path,FileMode.Open,FileAccess.Read)){//创建缓冲区byte[] buffer =new byte[1024 * 1024 * 5];int r = fsRead.Read(buffer, 0, buffer.Length);string str = Encoding.Default.GetString(buffer, 0, r);textBox1.WordWrap = true;textBox1.Text = str;}}}
}

2、保存文件对话框

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;
using System.IO;namespace 保存文件对话框
{public partial class Form1 : Form{public Form1(){InitializeComponent();}private void button1_Click(object sender, EventArgs e){SaveFileDialog sfd = new SaveFileDialog();sfd.Title = "请选择要保存的路径";sfd.InitialDirectory = @"C:\Users\Administrator\Desktop";sfd.Filter = "文本文件|*.txt|所有文件|*.*";sfd.ShowDialog();string path = sfd.FileName;if (path == "")return;using(FileStream fsWrite = new FileStream(path,FileMode.OpenOrCreate,FileAccess.Write)){byte[] buffer = Encoding.Default.GetBytes(textBox1.Text);fsWrite.Write(buffer, 0, buffer.Length);}MessageBox.Show("保存成功");}}
}

3、字体和颜色对话框

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 字体和颜色对话框
{public partial class Form1 : Form{public Form1(){InitializeComponent();}private void bntFont_Click(object sender, EventArgs e){FontDialog fd = new FontDialog();fd.ShowDialog();//将字体对话框选中的字体给到文本框中textBox1.Font = fd.Font;}private void bntColor_Click(object sender, EventArgs e){ColorDialog cd = new ColorDialog();cd.ShowDialog();//将颜色对话框选中的字体给到文本框中textBox1.ForeColor = cd.Color;}}
}

三、案例代码

1、浏览器

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 浏览器控件
{public partial class Form1 : Form{public Form1(){InitializeComponent();}private void button1_Click(object sender, EventArgs e){textBox1.Focus();string text = textBox1.Text;webBrowser1.Url = new Uri("http://"+text);}}
}

2、日期选择器

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 日期选择器
{public partial class Form1 : Form{public Form1(){InitializeComponent();}private void Form1_Load(object sender, EventArgs e){//程序加载的时候，将年份添加到下拉框中//获得当前的年份int year = DateTime.Now.Year;for (int i = year; i >= 1949; i--){cboYear.Items.Add(i + "年");}}/// <summary>/// 当年份被选择的时候 加载月份/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void cboYear_SelectedIndexChanged(object sender, EventArgs e){//添加之前应该清空之前的内容cboMonth.Items.Clear();for (int i = 1; i <= 12; i++){cboMonth.Items.Add(i + "月");}}/// <summary>/// 当月被选中时，加载天/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void cboMonth_SelectedIndexChanged(object sender, EventArgs e){cboDay.Items.Clear();int day = 0;//将字符中的年、月剔除    ---用remove不行（没有-1这个索引）string strMonth = cboMonth.SelectedItem.ToString().Split(new char[] { '月'},StringSplitOptions.RemoveEmptyEntries)[0];string strYear = cboYear.SelectedItem.ToString().Split(new char[] { '年' }, StringSplitOptions.RemoveEmptyEntries)[0];int month = Convert.ToInt32(strMonth);int year = Convert.ToInt32(strYear);switch(month){case 4:case 6:case 9:case 11:day = 30;break;case 2:if ((year % 400 == 0) || (year % 4 == 0) && (year % 100 != 0))day = 29;elseday = 28;break;default:day = 31;break;}for (int i = 1; i <= day; i++){cboDay.Items.Add(i + "日");}}}
}

3、双击显示图片

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;
using System.IO;namespace ListBox控件
{public partial class Form1 : Form{public Form1(){InitializeComponent();}string[] path = Directory.GetFiles(@"C:\Users\Administrator\Desktop\Picture");List<string> list = new List<string>();private void Form1_Load(object sender, EventArgs e){for (int i = 0; i < path.Length; i++){//listBox1.Items.Add(path[i]);string filePath = Path.GetFileName(path[i]);listBox1.Items.Add(filePath);list.Add(path[i]);}}private void listBox1_DoubleClick(object sender, EventArgs e){pictureBox1.SizeMode = PictureBoxSizeMode.StretchImage;//图片路径显示pictureBox1.Image = Image.FromFile(path[listBox1.SelectedIndex]);//pictureBox1.Image = Image.FromFile(list[listBox1.SelectedIndex]);}}
}

4、剪刀石头布

设计思路

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 剪刀石头布
{public partial class Form1 : Form{public Form1(){InitializeComponent();}private void btnStone_Click(object sender, EventArgs e){string str = "石头";PlayGame(str);}private void PlayGame(string str){lblPlayer.Text = str;Player player = new Player();int playerNum = player.ShowFist(str);Computer cpu = new Computer();int cpuNum = cpu.ShowFist();lblComputer.Text = cpu.Fist;Result result = Caipan.Judge(playerNum, cpuNum);lblResult.Text = result.ToString();}private void btnCut_Click(object sender, EventArgs e){string str = "剪刀";PlayGame(str);}private void btnNo_Click(object sender, EventArgs e){string str = "布";PlayGame(str);}private void Form1_Load(object sender, EventArgs e){lblComputer.Text = "";lblPlayer.Text = "";lblResult.Text = "";}}
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;namespace 剪刀石头布
{class Player{public int ShowFist(string fist){int num = 0;switch(fist){case "石头":num = 1;break;case "剪刀":num = 2;break;case "布":num = 3;break;}return num;}}
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;namespace 剪刀石头布
{class Computer{public string Fist{get;set;}public int ShowFist(){Random random = new Random();int num = random.Next(1, 4);switch(num){case 1:Fist = "石头";break;case 2:Fist = "剪刀";break;case 3:Fist = "布";break;}return num;}}
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;namespace 剪刀石头布
{public enum Result{玩家赢,平手,电脑赢}class Caipan{public static Result Judge(int playerNumber,int cpuNumber){if (playerNumber - cpuNumber == -1 || playerNumber - cpuNumber == 2)return Result.玩家赢;else if (playerNumber - cpuNumber == 0)return Result.平手;elsereturn Result.电脑赢;}}
}

5、记事本应用程序

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;namespace 记事本程序
{public partial class Form1 : Form{public Form1(){InitializeComponent();}private void Form1_Load(object sender, EventArgs e){//加载程序时隐藏panelpanel1.Visible = false;//取消文本框的自定换行textBox1.WordWrap = false;}private void 隐藏ToolStripMenuItem_Click(object sender, EventArgs e){panel1.Visible = false;}/// <summary>/// 点击按钮时也要隐藏panel/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void button1_Click(object sender, EventArgs e){panel1.Visible = false;}private void 显示ToolStripMenuItem_Click(object sender, EventArgs e){panel1.Visible = true;}List<string> list = new List<string>();private void 打开ToolStripMenuItem_Click(object sender, EventArgs e){OpenFileDialog ofd = new OpenFileDialog();ofd.Title = "请选择您想要打开的文本文件";ofd.InitialDirectory = @"C:\Users\Administrator\Desktop";ofd.Multiselect = true;ofd.Filter = "文本文件|*.txt|所有文件|*.*";ofd.ShowDialog();//获得用户选中的文件的全路径string path = ofd.FileName;//将文件的全路径赋值到泛型集合list.Add(path);//获取用户打开文件的文件名string fileName = Path.GetFileName(path);//将文件名放入到ListBox中listBox1.Items.Add(fileName);if (path == "")return;using(FileStream fsRead = new FileStream(path,FileMode.Open,FileAccess.Read)){byte[] buffer = new byte[1024 * 1024 * 5];int r = fsRead.Read(buffer, 0, buffer.Length);textBox1.Text = Encoding.Default.GetString(buffer, 0, r);}}private void 保存ToolStripMenuItem_Click(object sender, EventArgs e){SaveFileDialog sfd = new SaveFileDialog();sfd.Title = "请选择需要保存的文本文件";sfd.InitialDirectory = @"C:\Users\Administrator\Desktop";sfd.Filter = "文本文件|*.txt|所有文件|*.*";sfd.ShowDialog();//获得用户要保存的文件的路径string path = sfd.FileName;if (path == "")return;using (FileStream fsWrite = new FileStream(path,FileMode.OpenOrCreate,FileAccess.Write)){byte[] buffer = Encoding.Default.GetBytes(textBox1.Text);fsWrite.Write(buffer, 0, buffer.Length);}MessageBox.Show("保存成功");}private void 自动换行ToolStripMenuItem_Click(object sender, EventArgs e){if(自动换行ToolStripMenuItem.Text=="☆自动换行"){textBox1.WordWrap = true;自动换行ToolStripMenuItem.Text = "★取消自动换行";}else{textBox1.WordWrap = false;自动换行ToolStripMenuItem.Text = "☆自动换行";}}private void 字体ToolStripMenuItem_Click(object sender, EventArgs e){FontDialog fd = new FontDialog();fd.ShowDialog();textBox1.Font = fd.Font;}private void 颜色ToolStripMenuItem_Click(object sender, EventArgs e){ColorDialog cd = new ColorDialog();cd.ShowDialog();textBox1.ForeColor = cd.Color;}private void listBox1_DoubleClick(object sender, EventArgs e){//获得双击的文件所应用的全路径string path = list[listBox1.SelectedIndex];using(FileStream fsRead = new FileStream(path,FileMode.Open,FileAccess.Read)){byte[] buffer = new byte[1024 * 1024 * 5];int r =fsRead.Read(buffer, 0, buffer.Length);textBox1.Text = Encoding.Default.GetString(buffer, 0, r);}}}
}

6、音乐播放器

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Media;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;namespace Test
{public partial class Form1 : Form{public Form1(){InitializeComponent();}List<string> list = new List<string>();private void bntOpen_Click(object sender, EventArgs e){OpenFileDialog ofd = new OpenFileDialog();ofd.Title = "打开您想到打开的音乐文件";ofd.InitialDirectory = @"C:\Users\Administrator\Desktop";ofd.Filter = "音乐文件|*.wav|文本文件|*.txt|所有文件|*.*";ofd.Multiselect = true;ofd.ShowDialog();//获得我们再文件夹中选择所有文件的全路径string[] path = ofd.FileNames;for (int i = 0; i < path.Length; i++){listBox1.Items.Add(Path.GetFileName(path[i]));}}SoundPlayer sd = new SoundPlayer();/// <summary>/// 实现双击播放/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void listBox1_DoubleClick(object sender, EventArgs e){            sd.SoundLocation = list[listBox1.SelectedIndex];sd.Play();}/// <summary>/// 点击下一曲/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void bntDown_Click(object sender, EventArgs e){int index = listBox1.SelectedIndex;index++;if (index == listBox1.Items.Count)index = 0;//将改变的索引重新赋值给当前选中项的索引listBox1.SelectedIndex = index;sd.SoundLocation = list[index];sd.Play();}private void bntUp_Click(object sender, EventArgs e){int index = listBox1.SelectedIndex;index--;if (index == 0)index = listBox1.Items.Count - 1;listBox1.SelectedIndex = index;sd.SoundLocation = list[index];sd.Play();}}
}

7、酷狗播放器简易版

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;namespace 播放器
{public partial class Form1 : Form{public Form1(){InitializeComponent();}private void button1_Click(object sender, EventArgs e){musicPlayer.Ctlcontrols.play();}private void button6_Click(object sender, EventArgs e){musicPlayer.Ctlcontrols.pause();}/// <summary>/// 播放、暂停/// </summary>bool IsNew = true;private void btnPlayorStop_Click(object sender, EventArgs e){if(btnPlayorStop.Text=="播放"){//获得选中的歌曲if (IsNew==true){//获得选择的音乐，让音乐重头播放musicPlayer.URL = listPath[listBox1.SelectedIndex];}IsExistLrc(listPath[listBox1.SelectedIndex]);musicPlayer.Ctlcontrols.play();btnPlayorStop.Text = "暂停";}else if(btnPlayorStop.Text=="暂停"){musicPlayer.Ctlcontrols.pause();btnPlayorStop.Text = "播放";IsNew = false;}}/// <summary>/// 停止/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void button2_Click(object sender, EventArgs e){musicPlayer.Ctlcontrols.stop();btnPlayorStop.Text = "播放";}private void Form1_Load(object sender, EventArgs e){musicPlayer.settings.autoStart = false;label1.Image = Image.FromFile(@"C:\Users\Administrator\Desktop\静音.png");}/// <summary>/// 添加音乐文件/// </summary>List<string> listPath = new List<string>();private void button5_Click(object sender, EventArgs e){OpenFileDialog ofd = new OpenFileDialog();ofd.Title = "请选择你要播放的文件";ofd.InitialDirectory = @"D:\KuGou\";ofd.Filter = "音乐文件|*.mp3|所有文件|*.*";ofd.Multiselect = true;ofd.ShowDialog();string[] path = ofd.FileNames;for (int i = 0; i < path.Length; i++){listPath.Add(path[i]);listBox1.Items.Add(Path.GetFileName(path[i]));}}/// <summary>/// 双击播放音乐/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void listBox1_DoubleClick(object sender, EventArgs e){//如果listbox中无文件if(listBox1.Items.Count==0){MessageBox.Show("请先选择文件");return;}try{musicPlayer.URL = listPath[listBox1.SelectedIndex];musicPlayer.Ctlcontrols.play();btnPlayorStop.Text = "暂停";IsExistLrc(listPath[listBox1.SelectedIndex]);}catch { }}/// <summary>/// 下一首/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void button4_Click(object sender, EventArgs e){label2.Text = "";int index = listBox1.SelectedIndex;listBox1.SelectedIndices.Clear();index++;if(index==listBox1.Items.Count){index = 0;}listBox1.SelectedIndex = index;IsExistLrc(listPath[listBox1.SelectedIndex]);musicPlayer.URL = listPath[index];musicPlayer.Ctlcontrols.play();}/// <summary>/// 上一首/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void button3_Click(object sender, EventArgs e){label2.Text = "";int index = listBox1.SelectedIndex;listBox1.SelectedIndices.Clear();index--;if(index<0){index = listBox1.Items.Count - 1;}listBox1.SelectedIndex = index;IsExistLrc(listPath[listBox1.SelectedIndex]);musicPlayer.URL = listPath[index];musicPlayer.Ctlcontrols.play();}private void 删除ToolStripMenuItem_Click(object sender, EventArgs e){int count = listBox1.SelectedItems.Count;for (int i = 0; i < count; i++){//先删集合listPath.RemoveAt(listBox1.SelectedIndex);//再删listboxlistBox1.Items.RemoveAt(listBox1.SelectedIndex);}}private void label1_Click(object sender, EventArgs e){if(label1.Tag.ToString()=="1"){musicPlayer.settings.mute = true;label1.Image = Image.FromFile(@"C:\Users\Administrator\Desktop\放音.png");label1.Tag = "2";}else if(label1.Tag.ToString()=="2"){musicPlayer.settings.mute = false;label1.Image = Image.FromFile(@"C:\Users\Administrator\Desktop\静音.png");label1.Tag = "1";}}private void button7_Click(object sender, EventArgs e){musicPlayer.settings.volume++;}private void button8_Click(object sender, EventArgs e){musicPlayer.settings.volume--;}private void timer1_Tick(object sender, EventArgs e){try{//如果播放器的状态等于正在播放中if (musicPlayer.playState == WMPLib.WMPPlayState.wmppsPlaying){lblInformation.Text = musicPlayer.currentMedia.duration.ToString() + "\r\n" + musicPlayer.currentMedia.durationString.ToString() + "\r\n" + musicPlayer.Ctlcontrols.currentPosition.ToString() + "\r\n" + musicPlayer.Ctlcontrols.currentPositionString.ToString();double d1 = musicPlayer.currentMedia.duration;double d2 = musicPlayer.Ctlcontrols.currentPosition + 1;//如果当前音乐的总时间小于等于当前播放的时间if (d1 <= d2){int index = listBox1.SelectedIndex;listBox1.SelectedIndices.Clear();index++;if (index == listBox1.Items.Count){index = 0;}listBox1.SelectedIndex = index;IsExistLrc(listPath[index]);musicPlayer.URL = listPath[index];musicPlayer.Ctlcontrols.play();}}}catch { }}void IsExistLrc(string songPath){try{label2.Text = "";string songLrcPath = Path.ChangeExtension(songPath, "lrc");if (File.Exists(songLrcPath)){//读取歌词文件string[] lrcText = File.ReadAllLines(songLrcPath, Encoding.Default);//格式化歌词FormatLrc(lrcText);}else{label2.Text = "-----------歌词未找到------------";}}catch { }}List<double> listTime = new List<double>();List<string> listSong = new List<string>();void FormatLrc(string[] lrcText){listTime.Clear();listSong.Clear();for (int i = 0; i < lrcText.Length; i++){if (lrcText[i] != ""){//[00:11.31]不用太刻意 来就是兄弟string[] lrcTemp = lrcText[i].Split(new char[] { '[', ']' }, StringSplitOptions.RemoveEmptyEntries);//00:11.31   lrcTemp[0]//不用太刻意 来就是兄弟  lrcTemp[1]string[] lrcNewTemp = lrcTemp[0].Split(new char[] { ':' }, StringSplitOptions.RemoveEmptyEntries);//00//11.31if (lrcTemp.Length>1){double time = double.Parse(lrcNewTemp[0]) * 60 + double.Parse(lrcNewTemp[1]);//把截取出的时间存储到泛型集合中listTime.Add(time);//把截取的歌词存储到泛型集合中listSong.Add(lrcTemp[1]);}}elsecontinue;}}/// <summary>/// 播放歌词/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void timer2_Tick(object sender, EventArgs e){try{for (int i = 0; i < listTime.Count; i++){if (musicPlayer.Ctlcontrols.currentPosition >= listTime[i] && musicPlayer.Ctlcontrols.currentPosition < listTime[i + 1]){label2.Text = listSong[i];}}}catch { }}}
}

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C#WinForm开发笔记——基本控件（二）

C#学习笔记——WinForm开发

一、控件

1、WebBrowser

1>属性

2、ComboBox

1>属性

2>事件

3、ListBox

1>属性

2>事件

4、Panel

5、DataGridView

二、对话框

1、打开文件对话框

2、保存文件对话框

3、字体和颜色对话框

三、案例代码

1、浏览器

2、日期选择器

3、双击显示图片

4、剪刀石头布

5、记事本应用程序

6、音乐播放器

7、酷狗播放器简易版

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