未能加载从程序集“APP_ code”型 [英] Could not load type from assembly 'App_Code'

问题描述

我要创建在asp.net中自定义HTTP模块。 本文展示了如何做到这一点我按照步骤，这里是我的课从 IHttpModule的

继承

 公共类LanguageModule：IHttpModule的
{    公共无效初始化（HttpApplication的情况下）
    {
        context.AcquireRequestState + =新的EventHandler（OnAcquireRequestState）;
    }    公共无效的Dispose（）
    {    }    公共无效OnAcquireRequestState（对象i_object，EventArgs的i_eventArgs）
    {
        HttpApplication的l_httpApplication = i_object作为HttpApplication的;        //检查语言切换参数是否已经传递
        VAR l_language =
            l_httpApplication.Request.Params [Constants.SESSION_LANGUAGE]
        VAR l_boolLanguageChanged = FALSE;
        如果（l_language == NULL）
        {
            //如果没有发送语言参数，然后采取从会话语言
            l_language =（字符串）l_httpApplication.Session [Constants.SESSION_LANGUAGE]
        }
        其他
        {
            //如果语言参数确实发送，则用户想要改变语言。
            //我会确保我为了重定向到这个标签。
            l_boolLanguageChanged = TRUE;
        }        //具有语言thand，让我们将它设置。
        VAR l_culture =新System.Globalization.CultureInfo（l_language）;        Thread.CurrentThread.CurrentCulture = l_culture;
        Thread.CurrentThread.CurrentUICulture = l_culture;        //保存语言会话
        l_httpApplication.Session [Constants.SESSION_LANGUAGE] = l_language;        //检查我是否重定向
        如果（l_boolLanguageChanged＆安培;＆安培;！l_httpApplication.Request.UrlReferrer = NULL）
        {
            l_httpApplication.Response.Redirect（
               l_httpApplication.Request.UrlReferrer.AbsolutePath）;
        }    } // OnAcquireRequestState
    // -------------------------} //类LanguageModule
 

然后我注册了这个模块中的web.config 文件，像这样

 ＆LT;＆的HttpModules GT;
       ＆LT;添加名称=LanguageSettingModuleTYPE =LanguageModule，APP_ code/＆GT;
＆LT; /＆的HttpModules GT;
 

我也试过在的System.Web 像这样的标签

进行注册

 ＆LT; system.webServer＆GT;
    ＆LT;模块runAllManagedModulesForAllRequests =真正的＆GT;
        ＆LT;添加名称=LanguageSettingModuleTYPE =LanguageModule，APP_ code/＆GT;
    ＆LT; /模块＆gt;
＆LT; /system.webServer>
 

文件 LanguageModule 被划归APP_ code文件夹

不过，我总是得到这个错误

  

未能加载从程序集APP_ code型。

解决方案

从你的配置设置中删除 APP_ code 。在你的的web.config 它应该看起来像下面。即使你链接的MSDN文档，显示注册的方式相同。

 ＆LT;＆的HttpModules GT;
       ＆LT;添加名称=LanguageSettingModuleTYPE =LanguageModule/＆GT;
＆LT; /＆的HttpModules GT;
 

I want to create a custom HTTP module in asp.net. This article shows how to do it I followed the steps and here is my class which inherits from IHttpModule

public class LanguageModule : IHttpModule
{

    public void Init(HttpApplication context)
    {
        context.AcquireRequestState += new EventHandler(OnAcquireRequestState);
    }

    public void Dispose()
    {

    }

    public void OnAcquireRequestState(Object i_object, EventArgs i_eventArgs)
    {
        HttpApplication l_httpApplication = i_object as HttpApplication;

        // check whether the language change parameter has been passed
        var l_language =
            l_httpApplication.Request.Params[Constants.SESSION_LANGUAGE];
        var l_boolLanguageChanged = false;
        if (l_language == null)
        {
            // if language parameter is not sent, then take language from session
            l_language = (string)l_httpApplication.Session[Constants.SESSION_LANGUAGE];
        }
        else
        {
            // If language parameter is indeed sent, then user wants to change language.
            // I will make sure I tag this in order to redirect to.
            l_boolLanguageChanged = true;
        }

        // having the language a thand, let us set it.
        var l_culture = new System.Globalization.CultureInfo(l_language);

        Thread.CurrentThread.CurrentCulture = l_culture;
        Thread.CurrentThread.CurrentUICulture = l_culture;

        // save language to session
        l_httpApplication.Session[Constants.SESSION_LANGUAGE] = l_language;

        // check whether I have redirect
        if (l_boolLanguageChanged && l_httpApplication.Request.UrlReferrer != null)
        {
            l_httpApplication.Response.Redirect(
               l_httpApplication.Request.UrlReferrer.AbsolutePath);
        }

    } // OnAcquireRequestState
    //-------------------------

} // class LanguageModule

Then I registered this module in web.config file like so

<httpModules>
       <add name="LanguageSettingModule" type="LanguageModule, App_Code" />
</httpModules>

I tried also to register it under system.web tag like so

<system.webServer>
    <modules runAllManagedModulesForAllRequests="true">
        <add name="LanguageSettingModule" type="LanguageModule, App_Code" />
    </modules>
</system.webServer>

file LanguageModule is placed under App_Code folder

But I'm always getting this error

Could not load type from assembly 'App_Code'.

解决方案

Remove the App_Code from your configuration setting. In your web.config it should look like below. Even the MSDN document you linked, shows the same way of registering.

<httpModules>
       <add name="LanguageSettingModule" type="LanguageModule" />
</httpModules>

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