FederatedAuthentication.WSFederationAuthenticationModule在运行时为null

Question

我正在尝试订阅 Application_Start（）中的 RedirectingToIdentityProvider 事件，但FederatedAuthentication.WSFederationAuthenticationModule为空

代码

protected void Application_Start()
{
 FederatedAuthentication.WSFederationAuthenticationModule.RedirectingToIdentityProvider += WSFederationAuthenticationModule_RedirectingToIdentityProvider;
}

Answer 1

尝试这样做 - 适合我。

void Application_Start()
{
    FederatedAuthentication.ServiceConfigurationCreated += OnServiceConfigurationCreated;
}


void OnServiceConfigurationCreated(object sender, ServiceConfigurationCreatedEventArgs e)
{
    FederatedAuthentication.WSFederationAuthenticationModule.RedirectingToIdentityProvider += WSFederationAuthenticationModule_RedirectingToIdentityProvider;
} 

Answer 2

听起来您可能错过了配置中的WSFederationAuthenticationModule。确保在system.webServer\modules：

中有此内容

<add name="WSFederationAuthenticationModule" type="Microsoft.IdentityModel.Web.WSFederationAuthenticationModule, Microsoft.IdentityModel, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" preCondition="managedHandler" />

这是system.web\httpModules：

<add name="WSFederationAuthenticationModule" type="Microsoft.IdentityModel.Web.WSFederationAuthenticationModule, Microsoft.IdentityModel, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />

阅读here了解详情。

Answer 3

这是.net 4.0的精度

<system.web>
    <httpModules>
          <add name="WSFederationAuthenticationModule" type="System.IdentityModel.Services.WSFederationAuthenticationModule, System.IdentityModel.Services, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" />
    </httpModules>
</system.web>
....
<system.webServer>    
    <modules>      
      <add name="WSFederationAuthenticationModule" type="System.IdentityModel.Services.WSFederationAuthenticationModule, System.IdentityModel.Services, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" preCondition="managedHandler" />      
    </modules>
</system.webServer>

Answer 4

请确保在您的Global.asax中引用

System.IdentityModel.Services.WSFederationAuthenticationModule

而不是：

Microsoft.IdentityModel.Web.FederatedAuthentication.WSFederationAuthenticationModule

错误（web.config和global.asax之间的不一致）引用将导致WSFederationAuthenticationModule为null。