我想让HttpModule从一些简单的配置数据中注入javascripts,css链接到HEAD元素.我不确定应该挂哪个事件？
我可以使用@H_301_3@ – context.PreRequestHandlerExecute用于动态更改母版页@H_301_3@ – 用于SEO优化的Context.BeginRequest
在HTTPModule Event Execution Order?有一些帮助
谢谢你的提示.干杯,X.
解决方法
这是我在没有HttpModule的情况下实现你正在做的事情的方法.我不喜欢httpmodule的想法,因为如果我忘记注册它并且它没有运行,我的应用程序将无法工作,这将是一个非常明显的错误.该页面绝对需要包含JS,因此我决定将其放在项目的基本Page类中.
我在几年前实现了,并希望能够包含更多脚本,它支持css,元标记等….我忘了为什么我使用Page.Header.Controls.Add而不仅仅是Page.ClientScript.RegisterClientScriptInclude但是有一个原因.
using System;
using System.Collections.Generic;
using System.Web;
using System.Web.UI;
namespace YourNamespace
{
public class HeaderIncludesManager
{
private List<string> m_IncludedFiles = new List<string>();
public void IncludeScript(string s)
{
IncludeScript(s,null);
}
public bool IsIncluded(string file)
{
return (m_IncludedFiles.Find(s => s.Equals(file,StringComparison.InvariantCultureIgnoreCase)) != null);
}
public void IncludeScript(string script,string condition)
{
Page page = HttpContext.Current.CurrentHandler as Page;
if (!IsIncluded(script) || page == null)
return;
string scriptFile = string.Format("/{0}/{1}?v={2}",MyConfig.JSDir,script,MyConfig.BuildNumber);
if (page.Header != null)
{
string scriptTag = String.Format("<script language=\"javascript\" type=\"text/javascript\" src=\"{0}\"></script>\n",scriptFile);
if (!String.IsNullOrEmpty(condition))
scriptTag = String.Format("<!--[{0}]><script language=\"javascript\" type=\"text/javascript\" src=\"{1}\"></script><![endif]-->\n",condition,scriptFile);
page.Header.Controls.Add(new LiteralControl(scriptTag));
m_IncludedFiles.Add(script);
}
else if (!page.ClientScript.IsClientScriptIncludeRegistered(GetType(),scriptFile))
{
page.ClientScript.RegisterClientScriptInclude(GetType(),scriptFile,scriptFile);
m_IncludedFiles.Add(script);
}
}
public void IncludeCss(string css)
{
Page page = HttpContext.Current.CurrentHandler as Page;
if (!IsIncluded(css) || page == null)
return;
string cssfile = string.Format("/{0}/{1}?v={2}",MyConfig.CssDir,css,MyConfig.BuildNumber);
if (page.Header != null)
{
((Page)HttpContext.Current.CurrentHandler).Header.Controls.Add(new LiteralControl(String.Format("<link href=\"{0}\" rel=\"stylesheet\" type=\"text/css\" />\n",cssfile)));
m_IncludedFiles.Add(css);
}
}
public void IncludeJQuery()
{
IncludeScript("jquery-1.2.3.min.js");
}
public void IncludeJQueryUI()
{
IncludeJQuery();
IncludeScript("jquery.ui.1.0.min.js");
IncludeCss("jquery-theme.css");
}
public void IncludeFlotScripts()
{
IncludeJQuery();
IncludeScript("flot/jquery.flot.js");
IncludeScript("flot/excanvas.pack.js","if IE");
}
}
public class MyPage : Page
{
public HeaderIncludesManager HeaderIncludes = new HeaderIncludesManager();
}
public class MyControl : UserControl
{
public new MyPage Page
{
get
{
return (MyPage)base.Page;
}
}
}
public class SomeControlThatNeedsScripts : MyControl
{
protected override void OnLoad(EventArgs e)
{
Page.HeaderIncludes.IncludeJQueryUI();
base.OnLoad(e);
}
}
}
