在页面上注册/引用嵌入资源之前以编程方式修改它

我通过创建一个HTTP处理程序解决了我的小问题。在本例中,它被称为DynamicClientScript.axd。

我已经从我的代码中删减了一些内容来给你一个想法。下面的代码获取标准的嵌入式资源URL,并从中获取查询字符串以添加到我的处理程序的路径中。

    /// <summary>
    /// Gets the dynamic web resource URL to reference on the page.
    /// </summary>
    /// <param name="type">The type of the resource.</param>
    /// <param name="resourceName">Name of the resource.</param>
    /// <returns>Path to the web resource.</returns>
    public string GetScriptResourceUrl(Type type, string resourceName)
    {
        this.scriptResourceUrl = this.currentPage.ClientScript.GetWebResourceUrl(type, resourceName);

        string resourceQueryString = this.scriptResourceUrl.Substring(this.scriptResourceUrl.IndexOf("d="));

        DynamicScriptSessionManager sessMngr = new DynamicScriptSessionManager();
        Guid paramGuid = sessMngr.StoreScriptParameters(this.Parameters);

        return string.Format("/DynamicScriptResource.axd?{0}&paramGuid={1}", resourceQueryString, paramGuid.ToString());
    }

    /// <summary>
    /// Registers the client script include.
    /// </summary>
    /// <param name="key">The key of the client script include to register.</param>
    /// <param name="type">The type of the resource.</param>
    /// <param name="resourceName">Name of the resource.</param>
    public void RegisterClientScriptInclude(string key, Type type, string resourceName)
    {
        this.currentPage.ClientScript.RegisterClientScriptInclude(key, this.GetScriptResourceUrl(type, resourceName));
    }

然后处理程序使用其查询字符串来构建标准资源的URL。读取资源并用字典集合(DynamicClientScriptParameters)中的值替换每个键。

处理程序所做的。。。

        public void ProcessRequest(HttpContext context)
    {
        string d = HttpContext.Current.Request.QueryString["d"]; 
        string t = HttpContext.Current.Request.QueryString["t"];
        string paramGuid = HttpContext.Current.Request.QueryString["paramGuid"];

        string urlFormatter = "http://" + HttpContext.Current.Request.Url.Host + "/WebResource.axd?d={0}&t={1)";

        // URL to resource.
        string url = string.Format(urlFormatter, d, t);

        string strResult = string.Empty;

        WebResponse objResponse;
        WebRequest objRequest = System.Net.HttpWebRequest.Create(url);

        objResponse = objRequest.GetResponse();

        using (StreamReader sr = new StreamReader(objResponse.GetResponseStream()))
        {
            strResult = sr.ReadToEnd();

            // Close and clean up the StreamReader
            sr.Close();
        }

        DynamicScriptSessionManager sessionManager = (DynamicScriptSessionManager)HttpContext.Current.Application["DynamicScriptSessionManager"];

        DynamicClientScriptParameters parameters = null;

        foreach (var item in sessionManager)
        {
            Guid guid = new Guid(paramGuid);

            if (item.SessionID == guid)
            {
                parameters = item.DynamicScriptParameters;
            }
        }

        foreach (var item in parameters)
        {
            strResult = strResult.Replace("$" + item.Key + "$", item.Value);
        }

        // Display results to a webpage
        context.Response.Write(strResult);
    }

            DynamicClientScript dcs = new DynamicClientScript(this.GetType(), "MyNamespace.MyScriptResource.js");

        dcs.Parameters.Add("myParam", "myValue");

        dcs.RegisterClientScriptInclude("scriptKey");

alert('$myParam$');

它将输出为:

alert('myValue');

在codebhind中,可以读取嵌入资源的内容,切换出所需的任何内容,然后将新内容写入响应。像这样:

protected void Page_Load(object sender, EventArgs e)
{
    string contents = ReadEmbeddedResource("ClassLibrary1", "ClassLibrary1.TestJavaScript.js");
    //replace part of contents
    //write new contents to response
    Response.Write(String.Format("<script>{0}</script>", contents));
}

private string ReadEmbeddedResource(string assemblyName, string resouceName)
{
    var assembly = Assembly.Load(assemblyName);
    using (var stream = assembly.GetManifestResourceStream(resouceName))
    using(var reader = new StreamReader(stream))
    {
        return reader.ReadToEnd();
    }
}