动态添加到表单的按钮不会出现

时间:2013-02-28 16:55:04

标签: c# winforms button

当我点击button1时,我正在尝试在表单上创建4个按钮,但按钮不会显示。为什么不呢?

private void button1_Click(object sender, EventArgs e)
{
   Button[] b = new Button[4];
   for (int i=0; i < 4; i++)
   {
      b[i] = new Button();
      b[i].Name = "button" + i;
      b[i].Location = new Point(43, 39 + 10 * i);
      b[i].Size = new Size(158, 48);
   }
}

4 个答案:

答案 0 :(得分:5)

您只创建了它们,但您还需要将它们添加到表单中:this.Controls.Add(b[i]);

private void button1_Click(object sender, EventArgs e)
{
   Button[] b = new Button[4];
   for (int i=0; i < 4; i++)
   {
       b[i] = new Button();
       b[i].Name = "button" + i;
       b[i].Location = new Point(43, 39 + 10 * i);
       b[i].Size = new Size(158, 48);

       this.Controls.Add(b[i]);
   }
}

答案 1 :(得分:1)

您所做的只是创建一个按钮数组,并在索引处指定按钮。你的表单对这些按钮一无所知,它们可以是一个整数数组,也可以是所有重要事项。您需要将它们放在表单的容器中:

Controls.Add(b[i]);

现在,您的表单将取得它们的所有权,在处理容器时管理处理。

答案 2 :(得分:1)

试试这个:

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

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

        private void button1_Click(object sender, EventArgs e)
        {
            Button[] b = new Button[4];
            for (int i = 0; i < 4; i++)
            {
                b[i] = new Button();
                b[i].Name = "button" + i;
                b[i].Location = new Point(43, 39 + 10 * i);
                b[i].Size = new Size(158, 48);    
                b[i].Click += new EventHandler(OnClick);
                this.Controls.Add(b[i]);
            }
        }

        public void OnClick(object sender, EventArgs e)
        {    
            MessageBox.Show("Hello Handler:" + ((Button)sender).Name);    
        }
    }
}

答案 3 :(得分:0)

在表单上创建Panel。并在您的代码中添加此行

panel1.Controls.Add(b[i])