Winform窗体的基本控件

一、窗体的事件

每一个窗体都有一个事件，这个窗体加载完成之后执行哪一段代码

位置：（1)右键属性→事件→load 双击进入。（2)双击窗体任意一个位置进入

public partial class Form1 : Form//构造方法

{ 

public Form1() 
{ 
   InitializeComponent(); 
}

控件在工具箱里面找，找到之后双击即可添加进来，也可以点住拖进来

每个工具，控件，窗体都有一个name，相当于id，用来标识该对象的名称，name值不允许重复

六大常用控件

1、Label -- 文本显示工具

Text：需要显示的文字——属性

Label的取值赋值：

private void Form1_Load(object sender, EventArgs e)
{
       label1.Text = "请输入你需要购买的东西：";
      MessageBox.Show(label1.Text);
}

2、TextBox -- 文本框

TextBox的取值赋值：

private void Form1_Load(object sender, EventArgs e)
{
     textBox1.Text = "请输入配菜";
    MessageBox.Show(textBox1.Text);
}

3、radioButton -- 单选按钮

text:文字

Checked：是否选中

 // 
            // radioButton1
            // 
            this.radioButton1.AutoSize = true;
            this.radioButton1.BackColor = System.Drawing.Color.Transparent;
            this.radioButton1.Checked = true;//决定是否先选中其中一个
            this.radioButton1.Font = new System.Drawing.Font("微软雅黑", 9.75F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(134)));
            this.radioButton1.Location = new System.Drawing.Point(150, 130);
            this.radioButton1.Name = "radioButton1";
            this.radioButton1.Size = new System.Drawing.Size(53, 23);
            this.radioButton1.TabIndex = 4;
            this.radioButton1.TabStop = true;
            this.radioButton1.Text = "薯条";
            this.radioButton1.UseVisualStyleBackColor = false;

4 combobox--下拉列表

用于制作下拉菜单

  // 
            // comboBox1
            // 
            this.comboBox1.BackColor = System.Drawing.SystemColors.Info;
            //决定着默认无法输入文字，为灰色区域DropDownList
            this.comboBox1.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
            this.comboBox1.Font = new System.Drawing.Font("微软雅黑", 8F);
            this.comboBox1.FormattingEnabled = true;
            this.comboBox1.Items.AddRange(new object[] {
            "香辣鸡腿堡",
            "半鸡半虾堡",
            "BBQ手撕猪肉堡",
            "老北京鸡肉卷",
            "黑椒牛柳饭",
            "日式咖喱饭"});
            this.comboBox1.Location = new System.Drawing.Point(150, 81);
            this.comboBox1.Margin = new System.Windows.Forms.Padding(4);
            this.comboBox1.Name = "comboBox1";
            this.comboBox1.Size = new System.Drawing.Size(168, 24);
            this.comboBox1.TabIndex = 2;

5、checkbox -- 复选框组

Checked属性：是否选中

Tag属性：可以存储自定义数，用户自己定义

设置全选或者全都不选

private void checkBox3_CheckedChanged(object sender, EventArgs e)
        {
            foreach (Control ctr in panel2.Controls)
            {
                if (ctr is CheckBox)
                {
                    CheckBox ck = ctr as CheckBox;
                    ck.Checked = checkBox3.Checked;
                }
            }
        }

6、Button 按钮  

name：设置按钮名

Text：设置按钮显示的文字

双击进入设置按钮的事件（默认为点击事件）

练习：肯德基订餐

namespace WindowsFormsApplication1
{
    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
        /// 使用代码编辑器修改此方法的内容。
        /// </summary>
        private void InitializeComponent()
        {
            System.ComponentModel.ComponentResourceManager resources = new System.ComponentModel.ComponentResourceManager(typeof(Form1));
            this.label1 = new System.Windows.Forms.Label();
            this.label2 = new System.Windows.Forms.Label();
            this.comboBox1 = new System.Windows.Forms.ComboBox();
            this.label3 = new System.Windows.Forms.Label();
            this.radioButton1 = new System.Windows.Forms.RadioButton();
            this.radioButton2 = new System.Windows.Forms.RadioButton();
            this.radioButton3 = new System.Windows.Forms.RadioButton();
            this.label4 = new System.Windows.Forms.Label();
            this.checkBox1 = new System.Windows.Forms.CheckBox();
            this.checkBox2 = new System.Windows.Forms.CheckBox();
            this.checkBox3 = new System.Windows.Forms.CheckBox();
            this.checkBox4 = new System.Windows.Forms.CheckBox();
            this.checkBox5 = new System.Windows.Forms.CheckBox();
            this.checkBox6 = new System.Windows.Forms.CheckBox();
            this.label5 = new System.Windows.Forms.Label();
            this.label6 = new System.Windows.Forms.Label();
            this.textBox1 = new System.Windows.Forms.TextBox();
            this.textBox2 = new System.Windows.Forms.TextBox();
            this.button1 = new System.Windows.Forms.Button();
            this.SuspendLayout();
            // 
            // label1
            // 
            this.label1.AutoSize = true;
            this.label1.BackColor = System.Drawing.Color.Transparent;
            this.label1.Font = new System.Drawing.Font("微软雅黑", 20F);
            this.label1.ForeColor = System.Drawing.Color.Yellow;
            this.label1.Location = new System.Drawing.Point(164, 9);
            this.label1.Margin = new System.Windows.Forms.Padding(8, 0, 8, 0);
            this.label1.Name = "label1";
            this.label1.Size = new System.Drawing.Size(204, 35);
            this.label1.TabIndex = 0;
            this.label1.Text = "肯德基点餐系统";
            this.label1.Click += new System.EventHandler(this.label1_Click);
            // 
            // label2
            // 
            this.label2.AutoSize = true;
            this.label2.BackColor = System.Drawing.Color.Transparent;
            this.label2.Font = new System.Drawing.Font("微软雅黑", 10F);
            this.label2.ForeColor = System.Drawing.Color.White;
            this.label2.Location = new System.Drawing.Point(36, 81);
            this.label2.Margin = new System.Windows.Forms.Padding(4, 0, 4, 0);
            this.label2.Name = "label2";
            this.label2.Size = new System.Drawing.Size(93, 20);
            this.label2.TabIndex = 1;
            this.label2.Text = "请选择主食：";
            this.label2.Click += new System.EventHandler(this.label2_Click);
            // 
            // comboBox1
            // 
            this.comboBox1.BackColor = System.Drawing.SystemColors.Info;
            //决定着默认无法输入文字，为灰色区域DropDownList
            this.comboBox1.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
            this.comboBox1.Font = new System.Drawing.Font("微软雅黑", 8F);
            this.comboBox1.FormattingEnabled = true;
            this.comboBox1.Items.AddRange(new object[] {
            "香辣鸡腿堡",
            "半鸡半虾堡",
            "BBQ手撕猪肉堡",
            "老北京鸡肉卷",
            "黑椒牛柳饭",
            "日式咖喱饭"});
            this.comboBox1.Location = new System.Drawing.Point(150, 81);
            this.comboBox1.Margin = new System.Windows.Forms.Padding(4);
            this.comboBox1.Name = "comboBox1";
            this.comboBox1.Size = new System.Drawing.Size(168, 24);
            this.comboBox1.TabIndex = 2;
            // 
            // label3
            // 
            this.label3.AutoSize = true;
            this.label3.BackColor = System.Drawing.Color.Transparent;
            this.label3.Font = new System.Drawing.Font("微软雅黑", 10F);
            this.label3.ForeColor = System.Drawing.Color.White;
            this.label3.Location = new System.Drawing.Point(36, 132);
            this.label3.Name = "label3";
            this.label3.Size = new System.Drawing.Size(93, 20);
            this.label3.TabIndex = 3;
            this.label3.Text = "请选择配餐：";
            // 
            // radioButton1
            // 
            this.radioButton1.AutoSize = true;
            this.radioButton1.BackColor = System.Drawing.Color.Transparent;
            this.radioButton1.Checked = true;//决定是否先选中其中一个
            this.radioButton1.Font = new System.Drawing.Font("微软雅黑", 9.75F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(134)));
            this.radioButton1.Location = new System.Drawing.Point(150, 130);
            this.radioButton1.Name = "radioButton1";
            this.radioButton1.Size = new System.Drawing.Size(53, 23);
            this.radioButton1.TabIndex = 4;
            this.radioButton1.TabStop = true;
            this.radioButton1.Text = "薯条";
            this.radioButton1.UseVisualStyleBackColor = false;
            // 
            // radioButton2
            // 
            this.radioButton2.AutoSize = true;
            this.radioButton2.BackColor = System.Drawing.Color.Transparent;
            this.radioButton2.Font = new System.Drawing.Font("微软雅黑", 10F);
            this.radioButton2.Location = new System.Drawing.Point(237, 129);
            this.radioButton2.Name = "radioButton2";
            this.radioButton2.Size = new System.Drawing.Size(69, 24);
            this.radioButton2.TabIndex = 5;
            this.radioButton2.Text = "玉米棒";
            this.radioButton2.UseVisualStyleBackColor = false;
            this.radioButton2.CheckedChanged += new System.EventHandler(this.radioButton2_CheckedChanged);
            // 
            // radioButton3
            // 
            this.radioButton3.AutoSize = true;
            this.radioButton3.BackColor = System.Drawing.Color.Transparent;
            this.radioButton3.Font = new System.Drawing.Font("微软雅黑", 10F);
            this.radioButton3.Location = new System.Drawing.Point(344, 129);
            this.radioButton3.Name = "radioButton3";
            this.radioButton3.Size = new System.Drawing.Size(69, 24);
            this.radioButton3.TabIndex = 6;
            this.radioButton3.Text = "鸡米花";
            this.radioButton3.UseVisualStyleBackColor = false;
            this.radioButton3.CheckedChanged += new System.EventHandler(this.radioButton3_CheckedChanged);
            // 
            // label4
            // 
            this.label4.AutoSize = true;
            this.label4.BackColor = System.Drawing.Color.Transparent;
            this.label4.Font = new System.Drawing.Font("微软雅黑", 10F);
            this.label4.ForeColor = System.Drawing.Color.White;
            this.label4.Location = new System.Drawing.Point(36, 184);
            this.label4.Name = "label4";
            this.label4.Size = new System.Drawing.Size(93, 20);
            this.label4.TabIndex = 7;
            this.label4.Text = "请选择饮品：";
            this.label4.Click += new System.EventHandler(this.label4_Click);
            // 
            // checkBox1
            // 
            this.checkBox1.AutoSize = true;
            this.checkBox1.BackColor = System.Drawing.Color.Transparent;
            this.checkBox1.Font = new System.Drawing.Font("微软雅黑", 9.75F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(134)));
            this.checkBox1.ForeColor = System.Drawing.Color.Black;
            this.checkBox1.Location = new System.Drawing.Point(149, 183);
            this.checkBox1.Name = "checkBox1";
            this.checkBox1.Size = new System.Drawing.Size(54, 23);
            this.checkBox1.TabIndex = 8;
            this.checkBox1.Text = "奶茶";
            this.checkBox1.UseVisualStyleBackColor = false;
            // 
            // checkBox2
            // 
            this.checkBox2.AutoSize = true;
            this.checkBox2.BackColor = System.Drawing.Color.Transparent;
            this.checkBox2.Font = new System.Drawing.Font("微软雅黑", 10F);
            this.checkBox2.ForeColor = System.Drawing.Color.Black;
            this.checkBox2.Location = new System.Drawing.Point(237, 182);
            this.checkBox2.Name = "checkBox2";
            this.checkBox2.Size = new System.Drawing.Size(56, 24);
            this.checkBox2.TabIndex = 9;
            this.checkBox2.Text = "可乐";
            this.checkBox2.UseVisualStyleBackColor = false;
            // 
            // checkBox3
            // 
            this.checkBox3.AutoSize = true;
            this.checkBox3.BackColor = System.Drawing.Color.Transparent;
            this.checkBox3.Font = new System.Drawing.Font("微软雅黑", 10F);
            this.checkBox3.Location = new System.Drawing.Point(150, 212);
            this.checkBox3.Name = "checkBox3";
            this.checkBox3.Size = new System.Drawing.Size(56, 24);
            this.checkBox3.TabIndex = 10;
            this.checkBox3.Text = "豆浆";
            this.checkBox3.UseVisualStyleBackColor = false;
            // 
            // checkBox4
            // 
            this.checkBox4.AutoSize = true;
            this.checkBox4.BackColor = System.Drawing.Color.Transparent;
            this.checkBox4.Font = new System.Drawing.Font("微软雅黑", 10F);
            this.checkBox4.Location = new System.Drawing.Point(344, 212);
            this.checkBox4.Name = "checkBox4";
            this.checkBox4.Size = new System.Drawing.Size(56, 24);
            this.checkBox4.TabIndex = 11;
            this.checkBox4.Text = "圣代";
            this.checkBox4.UseVisualStyleBackColor = false;
            this.checkBox4.CheckedChanged += new System.EventHandler(this.checkBox4_CheckedChanged);
            // 
            // checkBox5
            // 
            this.checkBox5.AutoSize = true;
            this.checkBox5.BackColor = System.Drawing.Color.Transparent;
            this.checkBox5.Font = new System.Drawing.Font("微软雅黑", 10F);
            this.checkBox5.Location = new System.Drawing.Point(236, 212);
            this.checkBox5.Name = "checkBox5";
            this.checkBox5.Size = new System.Drawing.Size(70, 24);
            this.checkBox5.TabIndex = 12;
            this.checkBox5.Text = "蔬菜汤";
            this.checkBox5.UseVisualStyleBackColor = false;
            // 
            // checkBox6
            // 
            this.checkBox6.AutoSize = true;
            this.checkBox6.BackColor = System.Drawing.Color.Transparent;
            this.checkBox6.Font = new System.Drawing.Font("微软雅黑", 10F);
            this.checkBox6.Location = new System.Drawing.Point(344, 182);
            this.checkBox6.Name = "checkBox6";
            this.checkBox6.Size = new System.Drawing.Size(56, 24);
            this.checkBox6.TabIndex = 13;
            this.checkBox6.Text = "牛奶";
            this.checkBox6.UseVisualStyleBackColor = false;
            // 
            // label5
            // 
            this.label5.AutoSize = true;
            this.label5.BackColor = System.Drawing.Color.Transparent;
            this.label5.Font = new System.Drawing.Font("微软雅黑", 10F);
            this.label5.ForeColor = System.Drawing.Color.White;
            this.label5.Location = new System.Drawing.Point(36, 258);
            this.label5.Name = "label5";
            this.label5.Size = new System.Drawing.Size(93, 20);
            this.label5.TabIndex = 14;
            this.label5.Text = "请输入地址：";
            // 
            // label6
            // 
            this.label6.AutoSize = true;
            this.label6.BackColor = System.Drawing.Color.Transparent;
            this.label6.Font = new System.Drawing.Font("微软雅黑", 10F);
            this.label6.ForeColor = System.Drawing.Color.White;
            this.label6.Location = new System.Drawing.Point(36, 331);
            this.label6.Name = "label6";
            this.label6.Size = new System.Drawing.Size(93, 20);
            this.label6.TabIndex = 15;
            this.label6.Text = "请输入电话：";
            this.label6.Click += new System.EventHandler(this.label6_Click);
            // 
            // textBox1
            // 
            this.textBox1.Font = new System.Drawing.Font("微软雅黑", 10F);
            this.textBox1.Location = new System.Drawing.Point(149, 258);
            this.textBox1.Multiline = true;
            this.textBox1.Name = "textBox1";
            this.textBox1.Size = new System.Drawing.Size(264, 55);
            this.textBox1.TabIndex = 16;
            // 
            // textBox2
            // 
            this.textBox2.Font = new System.Drawing.Font("微软雅黑", 10F);
            this.textBox2.Location = new System.Drawing.Point(149, 331);
            this.textBox2.Multiline = true;
            this.textBox2.Name = "textBox2";
            this.textBox2.Size = new System.Drawing.Size(263, 24);
            this.textBox2.TabIndex = 17;
            // 
            // button1
            // 
            this.button1.BackColor = System.Drawing.Color.Transparent;
            this.button1.Font = new System.Drawing.Font("微软雅黑", 15F);
            this.button1.Location = new System.Drawing.Point(179, 367);
            this.button1.Name = "button1";
            this.button1.Size = new System.Drawing.Size(126, 37);
            this.button1.TabIndex = 18;
            this.button1.Text = "提交";
            this.button1.UseVisualStyleBackColor = false;
            this.button1.Click += new System.EventHandler(this.button1_Click);
            // 
            // Form1
            // 
            this.AutoScaleDimensions = new System.Drawing.SizeF(16F, 35F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.BackgroundImage = global::WindowsFormsApplication1.Properties.Resources._81093c0c839ca9eff9a92b5c38ad3686;
            this.BackgroundImageLayout = System.Windows.Forms.ImageLayout.Stretch;
            this.ClientSize = new System.Drawing.Size(517, 418);
            this.Controls.Add(this.button1);
            this.Controls.Add(this.textBox2);
            this.Controls.Add(this.textBox1);
            this.Controls.Add(this.label6);
            this.Controls.Add(this.label5);
            this.Controls.Add(this.checkBox6);
            this.Controls.Add(this.checkBox5);
            this.Controls.Add(this.checkBox4);
            this.Controls.Add(this.checkBox3);
            this.Controls.Add(this.checkBox2);
            this.Controls.Add(this.checkBox1);
            this.Controls.Add(this.label4);
            this.Controls.Add(this.radioButton3);
            this.Controls.Add(this.radioButton2);
            this.Controls.Add(this.radioButton1);
            this.Controls.Add(this.label3);
            this.Controls.Add(this.comboBox1);
            this.Controls.Add(this.label2);
            this.Controls.Add(this.label1);
            this.Font = new System.Drawing.Font("微软雅黑", 20F);
            this.Icon = ((System.Drawing.Icon)(resources.GetObject("$this.Icon")));
            this.Margin = new System.Windows.Forms.Padding(8, 7, 8, 7);
            this.Name = "Form1";
            this.Text = "KFC";
            this.ResumeLayout(false);
            this.PerformLayout();

        }

        #endregion

        private System.Windows.Forms.Label label1;
        private System.Windows.Forms.Label label2;
        private System.Windows.Forms.ComboBox comboBox1;
        private System.Windows.Forms.Label label3;
        private System.Windows.Forms.RadioButton radioButton1;
        private System.Windows.Forms.RadioButton radioButton2;
        private System.Windows.Forms.RadioButton radioButton3;
        private System.Windows.Forms.Label label4;
        private System.Windows.Forms.CheckBox checkBox1;
        private System.Windows.Forms.CheckBox checkBox2;
        private System.Windows.Forms.CheckBox checkBox3;
        private System.Windows.Forms.CheckBox checkBox4;
        private System.Windows.Forms.CheckBox checkBox5;
        private System.Windows.Forms.CheckBox checkBox6;
        private System.Windows.Forms.Label label5;
        private System.Windows.Forms.Label label6;
        private System.Windows.Forms.TextBox textBox1;
        private System.Windows.Forms.TextBox textBox2;
        private System.Windows.Forms.Button button1;
    }
}

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 WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
            comboBox1.SelectedIndex = 0;//设置下拉框的默认值为第一行数据而不是为空;
        }

        private void label1_Click(object sender, EventArgs e)
        {

        }

        private void radioButton3_CheckedChanged(object sender, EventArgs e)
        {

        }

        private void radioButton2_CheckedChanged(object sender, EventArgs e)
        {

        }

        private void label4_Click(object sender, EventArgs e)
        {

        }

        private void checkBox4_CheckedChanged(object sender, EventArgs e)
        {

        }

        private void label6_Click(object sender, EventArgs e)
        {

        }

        private void button1_Click(object sender, EventArgs e)
        {
            //主食
            string zs = comboBox1.SelectedItem.ToString();
            //配餐
            string pc = "";
            if (radioButton1.Checked)//判断是否选中
                pc = radioButton1.Text;
            else if (radioButton2.Checked)
                pc = radioButton2.Text;
            else
                pc = radioButton3.Text;
            //饮品
            string yp = "";
            if (checkBox1.Checked)//判断饮品1是否选中
                yp += checkBox1.Text;
            if (checkBox2.Checked)
            {
                if (yp != "")//如果前面已经有选择过的饮品就加逗号
                {
                    yp += "，";
                }
                yp += checkBox2.Text;
            }
            if (checkBox3.Checked)
            {
                if (yp != "")
                {
                    yp += "，";
                }
                yp += checkBox3.Text;
            }
            if (checkBox4.Checked)
            {
                if (yp != "")
                {
                    yp += "，";
                }
                yp += checkBox4.Text;
            }
            if (checkBox5.Checked)
            {
                if (yp != "")
                {
                    yp += "，";
                }
                yp += checkBox5.Text;
                if (checkBox6.Checked)
                {
                    if (yp != "")
                    {
                        yp += "，";
                    }
                    yp += checkBox6.Text;
                }
            }
            //地址
            string dz = textBox1.Text;
            //电话
            string tel = textBox2.Text;
            MessageBox.Show("您选的的主食是：" + zs + "
您选择的配餐是：" + pc + "
您选择的饮品是：" + yp + "
配送地址：" + dz + "
联系电话：" + tel);
        }

        private void label2_Click(object sender, EventArgs e)
        {

        }
    }
}