web.config里面使用configSource

时间:2021-07-11 22:39:58

在asp.net中如果修改了配置文件web.config以后,会导致应用程序重启,所有回话(session)丢失掉,在 .NET Framework 2.0 以后的版本中,可以在一个单独文件中包括所有支持 configSource 属性的配置元素的配置。这样既不用重启应用程序,也方面管理,避免把所有的配置都放在web.config一个文件里使页面看起来比较乱。例如appSetting、connectionStrings节点。
例子如下:

注意,configSouce中的文件路径只能为相对物理路径,也就是只能为反斜杠(\),不能用斜杠(/)。

首先是web.config文件:

<configuration>
<!-- appSettings网站信息配置-->
<appSettings configSource="config\appSettings.config" />
<connectionStrings configSource="config\connectionStrings.config"/>
<system.web>
<compilation debug="true" targetFramework="4.0"/>
<httpHandlers configSource="config\httpHandlers.config" />
<authentication mode="Forms">
<forms loginUrl="~/Account/Login.aspx" timeout="2880" />
</authentication>
<pages configSource="config\pages.config" />
<membership>
<providers>
<clear/>
<add name="AspNetSqlMembershipProvider" type="System.Web.Security.SqlMembershipProvider" connectionStringName="ApplicationServices"
enablePasswordRetrieval="false" enablePasswordReset="true" requiresQuestionAndAnswer="false" requiresUniqueEmail="false"
maxInvalidPasswordAttempts="5" minRequiredPasswordLength="6" minRequiredNonalphanumericCharacters="0" passwordAttemptWindow="10"
applicationName="/" />
</providers>
</membership> <profile>
<providers>
<clear/>
<add name="AspNetSqlProfileProvider" type="System.Web.Profile.SqlProfileProvider" connectionStringName="ApplicationServices" applicationName="/"/>
</providers>
</profile> <roleManager enabled="false">
<providers>
<clear/>
<add name="AspNetSqlRoleProvider" type="System.Web.Security.SqlRoleProvider" connectionStringName="ApplicationServices" applicationName="/" />
<add name="AspNetWindowsTokenRoleProvider" type="System.Web.Security.WindowsTokenRoleProvider" applicationName="/" />
</providers>
</roleManager> </system.web> <system.webServer>
<modules runAllManagedModulesForAllRequests="true"/>
</system.webServer>
</configuration>

下面是两个单独的配置文件:

1、appSettings.config

 <?xml version="1.0" encoding="utf-8"?>

 <appSettings>
<!-- Base parameter -->
<add key="SiteResource" value="http://s.baidu.com"/>
<add key="SiteUrl" value="http://www.baidu.com" />
<add key="SiteName" value="www.baidu.com" />
<add key="SiteKeyword" value="baidu"/>
<add key="AllFreeShipping" value="false"/>
<add key="ReduceCashBegin" value="2013-9-10 16:00:00"/>
<add key="ReduceCashEnd" value="2013-9-16 16:00:00"/>
<add key="ReduceCashRule" value="500:30|400:25|300:20|200:15|100:10"/>
</appSettings>

2、connectionStrings.config

 <?xml version="1.0"?>
<connectionStrings>
<add name="connectionStrings"
connectionString="data source=.\SQLEXPRESS;Integrated Security=SSPI;AttachDBFilename=|DataDirectory|\aspnetdb.mdf;User Instance=true"
providerName="System.Data.SqlClient" />
</connectionStrings>

读取的时候的方式不变,跟以前一样,这里就写两个:

   /// <summary>
/// CSS、JS引用地址
/// </summary>
public static string SiteResource
{
get
{
return ConfigurationManager.AppSettings["SiteResource"] as string;
}
}
/// <summary>
/// 减现规则
/// </summary>
public static Dictionary<decimal, decimal> ReduceCashRule
{
get
{
string val = ConfigurationManager.AppSettings["ReduceCashRule"] as string;
string[] rule = val.Split(new char[] { '|' }, StringSplitOptions.RemoveEmptyEntries);
Dictionary<decimal, decimal> dic = new Dictionary<decimal, decimal>();
foreach (string item in rule)
{
string[] arr = item.Split(new char[] { ':' }, StringSplitOptions.RemoveEmptyEntries);
dic.Add(decimal.Parse(arr[]), decimal.Parse(arr[]));
}
return dic;
}
}

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