Question

我在C＃应用程序中有一个嵌入式浏览器，我正在显示静态网页。我可以通过javascript按下嵌入式浏览器内部网页中的按钮来调用应用程序的功能吗？

Answer 1

查看WebBrowser.ObjectForScripting property。将类设置为ObjectForScripting属性，其公共属性和方法将通过window.external提供给JavaScript。

示例（来自MSDN）

using System;
using System.Windows.Forms;
using System.Security.Permissions;

[PermissionSet(SecurityAction.Demand, Name="FullTrust")]
[System.Runtime.InteropServices.ComVisibleAttribute(true)]
public class Form1 : Form
{
    private WebBrowser webBrowser1 = new WebBrowser();
    private Button button1 = new Button();

    [STAThread]
    public static void Main()
    {
        Application.EnableVisualStyles();
        Application.Run(new Form1());
    }

    public Form1()
    {
        button1.Text = "call script code from client code";
        button1.Dock = DockStyle.Top;
        button1.Click += new EventHandler(button1_Click);
        webBrowser1.Dock = DockStyle.Fill;
        Controls.Add(webBrowser1);
        Controls.Add(button1);
        Load += new EventHandler(Form1_Load);
    }

    private void Form1_Load(object sender, EventArgs e)
    {
        webBrowser1.AllowWebBrowserDrop = false;
        webBrowser1.IsWebBrowserContextMenuEnabled = false;
        webBrowser1.WebBrowserShortcutsEnabled = false;
        webBrowser1.ObjectForScripting = this;
        // Uncomment the following line when you are finished debugging.
        //webBrowser1.ScriptErrorsSuppressed = true;

        webBrowser1.DocumentText =
            "<html><head><script>" +
            "function test(message) { alert(message); }" +
            "</script></head><body><button " +
            "onclick=\"window.external.Test('called from script code')\">" +
            "call client code from script code</button>" +
            "</body></html>";
    }

    public void Test(String message)
    {
        MessageBox.Show(message, "client code");
    }

    private void button1_Click(object sender, EventArgs e)
    {
        webBrowser1.Document.InvokeScript("test",
            new String[] { "called from client code" });
    }

}

通过嵌入式浏览器的javascript调用应用程序的功能？

1 个答案: