c# - 如何控制我的网络浏览器应用程序中打开的选项卡？

Question

嗨，我是 C# 新手，我用标签制作了一些简单的 Web 浏览器。

我的问题是我不知道如何控制选定的选项卡。我介意如果我单击返回它会返回到选定的选项卡。

对不起，我的英语不好。这是我的代码：

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 HardRam
{
    public partial class Form1 : Form
    {
        int i = 1;
        public Form1()
        {
            InitializeComponent();
        }           
        private void toolStripButton1_Click(object sender, EventArgs e)
        {          
          webBrowser1.GoBack();
        }

        private void toolStripButton2_Click(object sender, EventArgs e)
        {
           webBrowser1.GoForward();
        }
        private void toolStripButton3_Click(object sender, EventArgs e)
        {            
            webBrowser1.Navigate("http://www.google.com");
        }
        private void toolStripButton4_Click(object sender, EventArgs e)
        {            
            webBrowser1.Refresh();
        }
        private void toolStripButton5_Click(object sender, EventArgs e)
        {           
            webBrowser1.Stop();
        }
        private void button1_Click(object sender, EventArgs e)
        {           
            webBrowser1.Navigate(textBox1.Text);
        }

        private void button3_Click(object sender, EventArgs e)
        {
            webBrowser1.Navigate("http://www.google.com/search?&q=" + textBox2.Text);
        }

        private void label2_Click(object sender, EventArgs e) { }

        private void toolStripLabel1_Click(object sender, EventArgs e) { }

        private void toolStripButton7_Click(object sender, EventArgs e)
        {
            TabPage newTp = new TabPage();
            WebBrowser newWB = new WebBrowser();
            newWB.Name = "Page" + tabControl1.TabPages.Count + 1;
            newWB.Dock = DockStyle.Fill;
            newWB.Url = new Uri(@"http://www.google.com");
            newTp.Controls.Add(newWB);
            tabControl1.TabPages.Add(newTp);    
        }

        private void toolStripButton8_Click(object sender, EventArgs e)
        {
            webBrowser1.Navigate("http://www.google.com/search?&q=" + textBox2.Text );
        }
    }
}

Answer 1

您为每个选项卡创建一个实例web-browser，因此您必须获取当前选项卡及其web-browser控件，因此请参阅以下示例：

private void btnaddtab_Click(object sender, EventArgs e)
        {
            TabPage newTp = new TabPage();
            WebBrowser newWB = new WebBrowser();
            newWB.Name = "Page" + tabControl1.TabPages.Count + 1;
            newWB.Dock = DockStyle.Fill;
            newWB.Url = new Uri(@"http://www.bing.com");
            newTp.Controls.Add(newWB);
            tabControl1.TabPages.Add(newTp);   
        }

        private void btnback_Click(object sender, EventArgs e)
        {
            (tabControl1.TabPages[tabControl1.SelectedIndex].Controls[0] as WebBrowser).GoBack();
        }

        private void btnforward_Click(object sender, EventArgs e)
        {
            (tabControl1.TabPages[tabControl1.SelectedIndex].Controls[0] as WebBrowser).GoForward();
        }