一图胜千言，利用图表控件进行数据展示已成为一种趋势，所以为推荐本篇文章给大家，希望能够有所帮助。
示例截图，运行结果：.
疫情实时地图源码
疫情实时地图源码如下所示：
using System;using System.Drawing;using System.Text;using NSoup;using NSoup.Nodes;using System.IO;using System.Net;using System.Text.RegularExpressions;using System.Windows.Forms;namespace Pneumonia{public partial class MainForm : DevComponents.DotNetBar.OfficeForm{static string confirmedCount, suspectedCount, deadCount, curedCount, updateTime, dataUpdateTime;static string url = "https://3g.dxy.cn/newh5/view/pneumonia";static int count = 0;static Document doc;public MainForm(){this.EnableGlass = false;InitializeComponent();this.SizeChanged += new Resize(this).Form1_Resize; //窗口自适应代码}private void MainForm_Load(object sender, EventArgs e){timer1.Enabled = true;timer1.Interval = 1;timer1.Start();WebClient wc = new WebClient();byte[] htmlData = wc.DownloadData(url);string html = Encoding.UTF8.GetString(htmlData);logWrite(html);//将网页内容写入txt文件，以方便查看toolStripStatusLabel1.Text = DateTime.Now.ToString();}private void timer1_Tick(object sender, EventArgs e){dataUpdateTime = DateTime.Now.ToString();count++;timer1.Interval = 300000;GetData();lbl1.Text = "☛ 病毒: " + regularMatchStr("getStatisticsService", "virus\":\"(.+?)\",");lbl2.Text = "☛ 传染源: " + regularMatchStr("getStatisticsService", "infectSource\":\"(.+?)\",");lbl3.Text = "☛ 传播途径: " + regularMatchStr("getStatisticsService", "passWay\":\"(.+?)\",");lbl4.Text = "☛ " + regularMatchStr("getStatisticsService", "remark1\":\"(.+?)\",");lbl5.Text = "☛ " + regularMatchStr("getStatisticsService", "remark2\":\"(.+?)\",");Image map = UrlToImage("https://img1.dxycdn.com/2020/0201/450/3394153392393266839-135.png");pictureBox1.Image = map;Image chart = UrlToImage("https://img1.dxycdn.com/2020/0201/693/3394145745204021706-135.png");pictureBox2.Image = chart;updateTimeLbl.Text = "截至 " + updateTime + " 全国数据统计";confirmedLbl.Text = confirmedCount;suspectedLbl.Text = suspectedCount;deadLbl.Text = deadCount;curedLbl.Text = curedCount;}public static void GetData(){//直接通过url来获取Document对象doc = NSoupClient.Connect(url).Get();//先获取id为artContent的元素，再获取所有的p标签updateTime = ConvertStringToDateTime(regularMatchStr("getStatisticsService", "modifyTime\":(.+?),")).ToString();confirmedCount = regularMatchStr("getStatisticsService", "confirmedCount\":(.+?),");suspectedCount = regularMatchStr("getStatisticsService", "suspectedCount\":(.+?),");deadCount = regularMatchStr("getStatisticsService", "deadCount\":(.+?),");curedCount = regularMatchStr("getStatisticsService", "curedCount\":(.+?),");}#region 下载图片到Imagepublic static Image UrlToImage(string url){WebClient mywebclient = new WebClient();byte[] Bytes = mywebclient.DownloadData(url);using (MemoryStream ms = new MemoryStream(Bytes)){Image outputImg = Image.FromStream(ms);return outputImg;}}#endregionpublic static DateTime ConvertStringToDateTime(string timeStamp){DateTime dtStart = TimeZone.CurrentTimeZone.ToLocalTime(new DateTime(1970, 1, 1));long lTime = long.Parse(timeStamp + "0000");TimeSpan toNow = new TimeSpan(lTime);return dtStart.Add(toNow);}public static string regularMatchStr(string elementId, string regex){Element p = doc.GetElementById(elementId);Regex reg = new Regex(regex, RegexOptions.IgnoreCase);//例如我想提取line中的NAME值Match match = reg.Match(p.Html());string value = match.Groups[1].Value;return value;}public static void logWrite(string Message){if (!File.Exists(AppDomain.CurrentDomain.BaseDirectory + "\\log.txt"))File.Create(AppDomain.CurrentDomain.BaseDirectory + "\\log.txt").Close();string fileName = AppDomain.CurrentDomain.BaseDirectory + "\\log.txt";string content = DateTime.Now.ToLocalTime() + Message + "\r\n";StreamWriter sw = new StreamWriter(fileName, true);sw.Write(content);sw.Close(); sw.Dispose();}private void notifyIcon1_MouseDoubleClick(object sender, MouseEventArgs e){if (e.Button == MouseButtons.Left)//判断鼠标的按键{//点击时判断form是否显示,显示就隐藏,隐藏就显示if (this.WindowState == FormWindowState.Normal){this.WindowState = FormWindowState.Minimized;this.Hide();}else if (this.WindowState == FormWindowState.Minimized){this.Show();this.WindowState = FormWindowState.Normal;this.Activate();}}else if (e.Button == MouseButtons.Right){//右键退出事件if (MessageBox.Show("是否需要关闭程序？", "提示:", MessageBoxButtons.OKCancel, MessageBoxIcon.Exclamation) == DialogResult.OK)//出错提示{//关闭窗口DialogResult = DialogResult.No;Dispose();Close();}}}private void timer2_Tick(object sender, EventArgs e){toolStripStatusLabel1.Text = DateTime.Now.ToString() + " 刷新次数 : " + count + " 最新刷新时间 ：" + dataUpdateTime;}private void MainForm_FormClosing(object sender, FormClosingEventArgs e){if (MessageBox.Show("是否确认退出程序？", "退出", MessageBoxButtons.OKCancel, MessageBoxIcon.Question) == DialogResult.OK){// 关闭所有的线程this.Dispose();this.Close();}else{e.Cancel = true;}}private void MainForm_SizeChanged(object sender, EventArgs e){//判断是否选择的是最小化按钮if (WindowState == FormWindowState.Minimized){//隐藏任务栏区图标this.ShowInTaskbar = false;//图标显示在托盘区notifyIcon1.Visible = true;}}private void 退出ToolStripMenuItem_Click(object sender, EventArgs e){if (MessageBox.Show("是否确认退出程序？", "退出", MessageBoxButtons.OKCancel, MessageBoxIcon.Question) == DialogResult.OK){// 关闭所有的线程this.Dispose();this.Close();}}private void 显示ToolStripMenuItem_Click(object sender, EventArgs e){WindowState = FormWindowState.Normal;}}}
resize类
using System;using System.Collections.Generic;using System.Drawing;using System.Linq;using System.Text;using System.Threading.Tasks;using System.Windows.Forms;namespace Pneumonia{class Resize{private MainForm _form;public Resize(MainForm form){int count = form.Controls.Count * 2 + 2;float[] factor = new float[count];int i = 0;factor[i++] = form.Size.Width;factor[i++] = form.Size.Height;foreach (Control ctrl in form.Controls){factor[i++] = ctrl.Location.X / (float)form.Size.Width;factor[i++] = ctrl.Location.Y / (float)form.Size.Height;ctrl.Tag = ctrl.Size;}form.Tag = factor;this._form = form;}public void Form1_Resize(object sender, EventArgs e){float[] scale = (float[])this._form.Tag;int i = 2;foreach (Control ctrl in this._form.Controls) //panel的长宽增长到一个固定的值就不会再增长了，原因：Panel的宽和高上限是65535像素（https://blog.csdn.net/dufangfeilong/article/details/41805073?utm_source=blogxgwz5）{ctrl.Left = (int)(this._form.Size.Width * scale[i++]);ctrl.Top = (int)(this._form.Size.Height * scale[i++]);ctrl.Width = (int)(this._form.Size.Width / (float)scale[0] * ((Size)ctrl.Tag).Width);ctrl.Height = (int)(this._form.Size.Height / (float)scale[1] * ((Size)ctrl.Tag).Height);}}}}
C# Winform控件自适应窗体大小：方法1（推荐）
需求：当窗体尺寸动态改变时，窗体中的各种控件（包括Panel以及Panel中的子控件）可以动态调节自身大小，以适应窗体内容比例。
方法：
第一步，新建一个类，代码如下：
public class Resize{private Form _form;public Resize(Form form){int count = form.Controls.Count * 2 + 2;float[] factor = new float[count];int i = 0;factor[i++] = form.Size.Width;factor[i++] = form.Size.Height;foreach (Control ctrl in form.Controls){factor[i++] = ctrl.Location.X / (float)form.Size.Width;factor[i++] = ctrl.Location.Y / (float)form.Size.Height;ctrl.Tag = ctrl.Size;}form.Tag = factor;this._form = form;}public void Form1_Resize(object sender, EventArgs e){float[] scale = (float[])this._form.Tag;int i = 2;foreach (Control ctrl in this._form.Controls) //panel的长宽增长到一个固定的值就不会再增长了，原因：Panel的宽和高上限是65535像素（https://blog.csdn.net/dufangfeilong/article/details/41805073?utm_source=blogxgwz5）{ctrl.Left = (int)(this._form.Size.Width * scale[i++]);ctrl.Top = (int)(this._form.Size.Height * scale[i++]);ctrl.Width = (int)(this._form.Size.Width / (float)scale[0] * ((Size)ctrl.Tag).Width);ctrl.Height = (int)(this._form.Size.Height / (float)scale[1] * ((Size)ctrl.Tag).Height);}}}
第二步，在Form的初始化函数中使用这个类：
public Form_StockCount(){InitializeComponent();this.SizeChanged += new Resize(this).Form1_Resize; //窗口自适应代码}
C# Winform窗体和控件自适应大小：方法2
1，在项目中创建类AutoSizeForm
AutoSizeForm.cs文件代码：
using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;using System.Windows.Forms;namespace CSharpFormApplication{class AutoResizeForm{//(1).声明结构,只记录窗体和其控件的初始位置和大小。public struct controlRect{public int Left;public int Top;public int Width;public int Height;}//(2).声明 1个对象//注意这里不能使用控件列表记录 List nCtrl;，因为控件的关联性，记录的始终是当前的大小。// public List oldCtrl= new List();//这里将西文的大于小于号都过滤掉了，只能改为中文的，使用中要改回西文public List<controlRect> oldCtrl = new List<controlRect>();int ctrlNo = 0;//1;//(3). 创建两个函数//(3.1)记录窗体和其控件的初始位置和大小,public void controllInitializeSize(Control mForm){controlRect cR;cR.Left = mForm.Left; cR.Top = mForm.Top; cR.Width = mForm.Width; cR.Height = mForm.Height;oldCtrl.Add(cR);//第一个为"窗体本身",只加入一次即可AddControl(mForm);//窗体内其余控件还可能嵌套控件(比如panel),要单独抽出,因为要递归调用//this.WindowState = (System.Windows.Forms.FormWindowState)(2);//记录完控件的初始位置和大小后，再最大化//0 - Normalize , 1 - Minimize,2- Maximize}private void AddControl(Control ctl){foreach (Control c in ctl.Controls){ //**放在这里，是先记录控件的子控件，后记录控件本身//if (c.Controls.Count > 0)// AddControl(c);//窗体内其余控件还可能嵌套控件(比如panel),要单独抽出,因为要递归调用controlRect objCtrl;objCtrl.Left = c.Left; objCtrl.Top = c.Top; objCtrl.Width = c.Width; objCtrl.Height = c.Height;oldCtrl.Add(objCtrl);//**放在这里，是先记录控件本身，后记录控件的子控件if (c.Controls.Count > 0)AddControl(c);//窗体内其余控件还可能嵌套控件(比如panel),要单独抽出,因为要递归调用}}//(3.2)控件自适应大小,public void controlAutoSize(Control mForm){if (ctrlNo == 0){ //*如果在窗体的Form1_Load中，记录控件原始的大小和位置，正常没有问题，但要加入皮肤就会出现问题，因为有些控件如dataGridView的的子控件还没有完成，个数少//*要在窗体的Form1_SizeChanged中，第一次改变大小时，记录控件原始的大小和位置,这里所有控件的子控件都已经形成controlRect cR;// cR.Left = mForm.Left; cR.Top = mForm.Top; cR.Width = mForm.Width; cR.Height = mForm.Height;cR.Left = 0; cR.Top = 0; cR.Width = mForm.PreferredSize.Width; cR.Height = mForm.PreferredSize.Height;oldCtrl.Add(cR);//第一个为"窗体本身",只加入一次即可AddControl(mForm);//窗体内其余控件可能嵌套其它控件(比如panel),故单独抽出以便递归调用}float wScale = (float)mForm.Width / (float)oldCtrl[0].Width;//新旧窗体之间的比例，与最早的旧窗体float hScale = (float)mForm.Height / (float)oldCtrl[0].Height;//.Height;ctrlNo = 1;//进入=1，第0个为窗体本身,窗体内的控件,从序号1开始AutoScaleControl(mForm, wScale, hScale);//窗体内其余控件还可能嵌套控件(比如panel),要单独抽出,因为要递归调用}private void AutoScaleControl(Control ctl, float wScale, float hScale){int ctrLeft0, ctrTop0, ctrWidth0, ctrHeight0;//int ctrlNo = 1;//第1个是窗体自身的 Left,Top,Width,Height，所以窗体控件从ctrlNo=1开始foreach (Control c in ctl.Controls){ //**放在这里，是先缩放控件的子控件，后缩放控件本身//if (c.Controls.Count > 0)// AutoScaleControl(c, wScale, hScale);//窗体内其余控件还可能嵌套控件(比如panel),要单独抽出,因为要递归调用ctrLeft0 = oldCtrl[ctrlNo].Left;ctrTop0 = oldCtrl[ctrlNo].Top;ctrWidth0 = oldCtrl[ctrlNo].Width;ctrHeight0 = oldCtrl[ctrlNo].Height;//c.Left = (int)((ctrLeft0 - wLeft0) * wScale) + wLeft1;//新旧控件之间的线性比例//c.Top = (int)((ctrTop0 - wTop0) * h) + wTop1;c.Left = (int)((ctrLeft0) * wScale);//新旧控件之间的线性比例。控件位置只相对于窗体，所以不能加 + wLeft1c.Top = (int)((ctrTop0) * hScale);//c.Width = (int)(ctrWidth0 * wScale);//只与最初的大小相关，所以不能与现在的宽度相乘 (int)(c.Width * w);c.Height = (int)(ctrHeight0 * hScale);//ctrlNo++;//累加序号//**放在这里，是先缩放控件本身，后缩放控件的子控件if (c.Controls.Count > 0)AutoScaleControl(c, wScale, hScale);//窗体内其余控件还可能嵌套控件(比如panel),要单独抽出,因为要递归调用if (ctl is DataGridView){DataGridView dgv = ctl as DataGridView;Cursor.Current = Cursors.WaitCursor;int widths = 0;for (int i = 0; i < dgv.Columns.Count; i++){dgv.AutoResizeColumn(i, DataGridViewAutoSizeColumnMode.AllCells); // 自动调整列宽widths += dgv.Columns[i].Width; // 计算调整列后单元列的宽度和}if (widths >= ctl.Size.Width) // 如果调整列的宽度大于设定列宽dgv.AutoSizeColumnsMode = DataGridViewAutoSizeColumnsMode.DisplayedCells; // 调整列的模式 自动elsedgv.AutoSizeColumnsMode = DataGridViewAutoSizeColumnsMode.Fill; // 如果小于 则填充Cursor.Current = Cursors.Default;}}}}}
2，在要自适应大小的Form中自定义全局类对象
AutoResizeForm asc = new AutoResizeForm();
3，在要自适应大小的Form的load事件和SizeChange事件中执行对象方法
private void WidgetAutoResizeForm_Load(object sender, EventArgs e){asc.controllInitializeSize(this);}private void WidgetAutoResizeForm_SizeChanged(object sender, EventArgs e){asc.controlAutoSize(this);}
From窗体代码：WidgetAutoResizeForm源码如下所示：
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 CSharpFormApplication{public partial class WidgetAutoResizeForm : Form{AutoResizeForm asc = new AutoResizeForm();public WidgetAutoResizeForm(){InitializeComponent();}private void WidgetAutoResizeForm_Load(object sender, EventArgs e){asc.controllInitializeSize(this);}private void WidgetAutoResizeForm_SizeChanged(object sender, EventArgs e){asc.controlAutoSize(this);}}}
