C#用代码向窗体中添加控件？

转载

wx6156f59b48086 2021-11-30 15:42:23

示例一：向窗体添加一个按钮：

using System;
using System.Drawing;
using System.Windows.Forms;

namespace WindowsFormsApp33
{
   public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
            //实例化一个命令按钮
            Button btn = new Button();
            //设置命令按钮的属性 
            btn.Location = new Point(50, 50);
            btn.Size = new Size(80, 25);
            btn.Text = "退出";
            btn.Click += btn_Click;
            //btn.Click += new System.EventHandler(this.btn_Click);
            //添加到窗口的Controls集合中
            this.Controls.Add(btn);
        }
        void btn_Click(object sender, EventArgs e)
        {
            this.Close();
        }

    }
}

btn.Click += new System.EventHandler(this.btn_Click);

和btn.Click += btn_Click;等价

示例二：态生成控件


using System;
using System.Drawing;
using System.Windows.Forms;

namespace WindowsFormsApp33
{
   public partial class Form1 : Form
    {
        public Form1()

        {
            InitializeComponent();
        }
        private void Form1_Load(object sender, EventArgs e)
        {
            int row = 0;
            for (int i = 0; i < 15; i++)
            {
                if (i % 5 == 0 && i != 0)
                {
                    row++;
                }
                Button btn = new Button();
                //控件名称
                btn.Name = "mybutton" + i.ToString();
                //控件显示文本
                btn.Text = string.Format("按钮{0}", i + 1);
                //控件大小
                btn.Size = new Size(50, 50);
                //控件位置【动态变化】
                btn.Location = new Point(50 + i % 5 * 100, 50 + row * 100);
                //添加到窗体
                this.Controls.Add(btn);
            }
        }
    }
}