以编程方式更新asp.net web.config文件的授权部分 [英] Update authorization section of asp.net web.config file programatically

问题描述

您正在尝试在运行时修改web.config文件。我的应用使用Windows身份验证。我写的代码在我的本地系统上工作正常。但是当我在服务器上的IIS中托管应用程序时，当我尝试在运行时修改web.config文件时，应用程序会抛出错误。

下面是用于修改web的代码.config文件。

Hi am trying to modify the web.config file on run time. My application uses windows authentication. The code which I have written is working fine on my local system. But when i host the application in the IIS on the server, application is throwing an error, when I try to modify web.config file on run time.
below is the code used to modify the the web.config file.

protected void btnAdd_Click(object sender, EventArgs e)
   {
       AuthorizationSection section;
       System.Configuration.Configuration config = WebConfigurationManager.OpenWebConfiguration(System.Web.Hosting.HostingEnvironment.ApplicationVirtualPath);

       section = (AuthorizationSection)config.GetSection("system.web/authorization");

       AuthorizationRule arule = new AuthorizationRule(AuthorizationRuleAction.Allow);

       string[] strAllowedUsers = GetUsers();


       section.Rules.Clear();

       foreach (string element in strAllowedUsers)
       {
           arule.Users.Add(element);
       }
       arule.Users.Add(txtAddUser.Text.ToString());
       section.Rules.Add(arule);



       config.Save();

   }

private string[] GetUsers()
   {
       string[] strUser = null;
       try
       {
           AuthorizationSection section;
           System.Configuration.Configuration config = WebConfigurationManager.OpenWebConfiguration(System.Web.Hosting.HostingEnvironment.ApplicationVirtualPath);
           section = (AuthorizationSection)config.GetSection("system.web/authorization");

           var rules = section.Rules;
           var allowedUsers = rules
             .OfType<authorizationrule>()
             .Where(r => r.Action == AuthorizationRuleAction.Allow)
             .Select(r => r.Users).First();
           if (allowedUsers.ToString() != null)
               strUser = allowedUsers.ToString().Split(',');
       }
       catch { }
       return strUser;
   }

它会抛出错误 - >

It throws an error -->

Unable to save config to file 'c:\inetpub\wwwroot\myapplication\web.config

注意：我在IIS 5.1上托管应用程序

Note: I am hosting the application on IIS 5.1

推荐答案

您不应该在运行时修改web.config文件。如果必须执行类似的操作，请将另一个xml文件添加到项目中并对其进行修改并从该文件中读取值。它会正常工作。

you should not be modifying web.config file at runtime. If you have to do something like that, add another xml file to your project and modify that and read values from that file. It will work fine.

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