Question

我想在运行时向我的选项卡控件添加一个有值的按钮。很多教程都展示了在创建与数据库的连接时如何完成。有没有办法可以在不连接数据库的情况下完成？

将数据输入文本框并单击保存后，新按钮应显示在另一个表单的选项卡控件上。

Answer 1

在你保存按钮放置：

 private void btnSave_Click(object sender, EventArgs e)
            {
                x = 4;
                 y = panel1 .Controls.Count * 70;
                Button newButton = new Button ();
                newButton.Height = 150;
                newButton.Width = 60;
                newButton.Location = new Point(x, y);
                newButton.Text= "your text";
                 newButton.Click += new       
              System.EventHandler(Button_Click);             
              tabControl1.TabPages [0].Controls.Add(newButton);

        }

您还可以点击创建的新按钮：

public void Button_Click(object sender, EventArgs e)
    {
        Button button = (Button)sender ;
        MessageBox.Show("Button is pressed "+button .Text );

    }

Answer 2

我提出这样的决定

主要形式：

namespace stackoverflow
{
    public partial class MainForm : Form
    {
        private static Form2 new_form = new Form2();

        public MainForm()
        {    
            InitializeComponent();
            new_form.Show();
        }


        void Button1Click(object sender, EventArgs e)
        {
            new_form.CreateBtn( richTextBox1.Text );
        }
    }
}

第二种形式：

namespace stackoverflow
{
    public partial class Form2 : Form
    {
        private Button btn = null;

        public Form2()
        {
            InitializeComponent();
        }

        public void CreateBtn( string text ) {
            if ( btn == null ) {
                btn= new Button();
                btn.Parent = this.tabPage1;
            }
            btn.Text = text;
            this.Refresh();
        }
    }
}

Answer 3

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 Buttons
{
    public partial class Form1 : Form
    {
        const int ROWS = 5;
        const int COLS = 10;
        public Form1()
        {
            InitializeComponent();
            this.Load += new System.EventHandler(this.Form1_Load);
        }
        public void Form1_Load(object sender, EventArgs e)
        {
            new MyButton(ROWS, COLS, this);
        }


    }
    public class MyButton : Button
    {
        const int WIDTH = 50;
        const int HEIGHT = 50;
        const int SPACE = 5;
        const int BORDER = 20;

        public static List<List<MyButton>> buttons { get; set; }
        public static List<MyButton> buttonList { get; set; }
        public Form1 form1;
        public int row { get; set; }
        public int col { get; set; }
        public MyButton()
        {
        }
        public MyButton(int rows, int cols, Form1 form1)
        {
            buttons = new List<List<MyButton>>();
            buttonList = new List<MyButton>();

            this.form1 = form1;
            for(int row = 0; row < rows; row++)
            {
                List<MyButton> newRow = new List<MyButton>();
                buttons.Add(newRow);
                for (int col = 0; col < cols; col++)
                {
                    MyButton newButton = new MyButton();
                    newButton.Height = HEIGHT;
                    newButton.Width = WIDTH;
                    newButton.Top = row * (HEIGHT + SPACE) + BORDER;
                    newButton.Left = col * (WIDTH + SPACE) + BORDER;
                    newButton.row = row;
                    newButton.col = col;
                    newRow.Add(newButton);
                    buttonList.Add(newButton);
                    newButton.Click += new System.EventHandler(Button_Click);
                    form1.Controls.Add(newButton);
                }
            }
        }
        public void Button_Click(object sender, EventArgs e)
        {
            MyButton button = sender as MyButton;
            MessageBox.Show(string.Format("Pressed Button Row {0} Column {1}", button.row, button.col));

        }

    }
}

C＃在运行时添加带值的按钮

3 个答案: