[C#][JavaScript]WinForm與WebPage的JavaScript互通(二) - 動態加入並調用JavaScript

November 6, 2013

    private void button1_Click(object sender, EventArgs e)
    {
        MessageBox.Show(webBrowser1.Document.InvokeScript("GetVar", new object[] { "executeCount" }).ToString());
    }

    public void OnWebPageReady()
    {
        HtmlElement head = webBrowser1.Document.GetElementsByTagName("head")[0];
        HtmlElement script = webBrowser1.Document.CreateElement("script");
        IHTMLScriptElement element = (IHTMLScriptElement)script.DomElement;
        element.text = "function GetVar(varName) { return eval('(' + varName + ')'); }";
        head.AppendChild(script);
    }
}</pre></div>

    public void OnWebPageReady()
    {
        webBrowser1.Document.InvokeScript("ShowAlert", new object[] { "WebPage Ready..." });
        
        HtmlElement head = webBrowser1.Document.GetElementsByTagName("head")[0];
        HtmlElement script = webBrowser1.Document.CreateElement("script");
        IHTMLScriptElement element = (IHTMLScriptElement)script.DomElement;
        element.text = "function GetJsonValue(json, member) { return eval('(' + json + '.' + member+ ')'); }";
        head.AppendChild(script);

        MessageBox.Show(webBrowser1.Document.InvokeScript("GetJsonValue", new object[] { "{'version': '1.0'}", "version" }).ToString());
    }
}</pre></div>

namespace WindowsFormsApplication3 { [PermissionSet(SecurityAction.Demand, Name = “FullTrust”)] [ComVisible(true)] public partial class Form1 : Form { public Form1() { InitializeComponent(); }

    private void Form1_Load(object sender, EventArgs e)
    {
        webBrowser1.ObjectForScripting = this;
        webBrowser1.DocumentText = @"&lt;head&gt;&lt;script&gt;
        var executeCount = 0;
        function ShowAlert(alertMessage) {
            ++executeCount;
            alert (alertMessage);
        }
        window.external.OnWebPageReady();&lt;/script&gt;&lt;/head&gt;"; 
    }

    private void button1_Click(object sender, EventArgs e)
    {
        webBrowser1.Document.InvokeScript("ShowAlert", new object[] { "alert message..." });
        MessageBox.Show(webBrowser1.Document.InvokeScript("GetVar", new object[] { "executeCount" }).ToString());
    }

    public void OnWebPageReady()
    {
        webBrowser1.Document.InvokeScript("ShowAlert", new object[] { "WebPage Ready..." });
        
        HtmlElement head = webBrowser1.Document.GetElementsByTagName("head")[0];
        HtmlElement script = webBrowser1.Document.CreateElement("script");
        IHTMLScriptElement element = (IHTMLScriptElement)script.DomElement;
        element.text = "function GetVar(varName) { return eval('(' + varName + ')'); }";
        head.AppendChild(script);

        script = webBrowser1.Document.CreateElement("script");
        element = (IHTMLScriptElement)script.DomElement;
        element.text = "function GetJsonValue(json, member) { return eval('(' + json + '.' + member+ ')'); }";
        head.AppendChild(script);

        MessageBox.Show(webBrowser1.Document.InvokeScript("GetJsonValue", new object[] { "{'version': '1.0'}", "version" }).ToString());
    }
}

}

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