Visual Studio 2022开发环境新建WinForm应用项目

WinForm代码结构

• Program.cs
  程序入口
  Application.Run(new Form1()); // 设置哪个窗体文件首先被执行

  using System;
  using System.Collections.Generic;
  using System.Linq;
  using System.Threading.Tasks;
  using System.Windows.Forms;
  
  namespace WindowsFormsApp1
  {
      internal static class Program
      {
          /// <summary>
          /// 应用程序的主入口点。
          /// </summary>
          [STAThread]
          static void Main()
          {
              Application.EnableVisualStyles();
              Application.SetCompatibleTextRenderingDefault(false);
              Application.Run(new Form1());
          }
      }
  }
  
  

• Form1.cs 窗体文件，可以添加多个窗体文件。
  在窗体设计界面可以拖动控件到窗体文件，编辑窗体文件。

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 WindowsFormsApp1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent(); // Form1.Designer.cs里面定义初始化组件
        }

        private void button1_Click(object sender, EventArgs e)
        {

        }
    }
}

• Form1.Designer.cs

namespace WindowsFormsApp1
{
    partial class Form1
    {
        /// <summary>
        /// 必需的设计器变量。
        /// </summary>
        private System.ComponentModel.IContainer components = null;

        /// <summary>
        /// 清理所有正在使用的资源。
        /// </summary>
        /// <param name="disposing">如果应释放托管资源，为 true；否则为 false。</param>
        protected override void Dispose(bool disposing)
        {
            if (disposing && (components != null))
            {
                components.Dispose();
            }
            base.Dispose(disposing);
        }

        #region Windows 窗体设计器生成的代码

        /// <summary>
        /// 设计器支持所需的方法 - 不要修改
        /// 使用代码编辑器修改此方法的内容。
        /// </summary>
        private void InitializeComponent()
        {
            this.saveFileDialog1 = new System.Windows.Forms.SaveFileDialog();
            this.button1 = new System.Windows.Forms.Button();
            this.SuspendLayout();
            // 
            // button1
            // 
            this.button1.Location = new System.Drawing.Point(79, 101);
            this.button1.Name = "button1";
            this.button1.Size = new System.Drawing.Size(75, 23);
            this.button1.TabIndex = 0;
            this.button1.Text = "button1";
            this.button1.UseVisualStyleBackColor = true;
            this.button1.Click += new System.EventHandler(this.button1_Click);
            // 
            // Form1
            // 
            this.AutoScaleDimensions = new System.Drawing.SizeF(8F, 15F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.ClientSize = new System.Drawing.Size(992, 526);
            this.Controls.Add(this.button1);
            this.Name = "Form1";
            this.Text = "Form1";
            this.ResumeLayout(false);

        }

        #endregion

        private System.Windows.Forms.SaveFileDialog saveFileDialog1;
        private System.Windows.Forms.Button button1;
    }
}

新键窗体文件

右键项目->添加->窗体(Windows窗体)

从Form1启动Form2

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 WindowsFormsApp1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

         private void button1_Click(object sender, EventArgs e)
		 {
		     Form2 form2 = new Form2();
		     form2.Show(); // 窗口方式显示，允许在后台运行,Form1和Form2的鼠标焦点可随意切换
		     
		 }
		
		 private void button2_Click(object sender, EventArgs e)
		 {
		     Form2 form2 = new Form2();
		     form2.ShowDialog(); // 对话框方式显示，不允许在后台运行，必须先关闭Form2焦点才能切换到Form1
		 }
    }
}

修改控件属性

退出程序和关闭窗口

• 退出程序
  Application.Exit();
• 关闭窗口
  form.Close();