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/// <summary>
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/// 修改web.config文件appSettings配置节中的Add里的value属性
///作者:sp
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/// </summary>
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/// <remarks>
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/// 注意,调用该函数后,会使整个Web Application重启,导致当前所有的会话丢失
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/// </remarks>
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/// <param name="key">要修改的键key</param>
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/// <param name="strValue">修改后的value</param>
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/// <exception cref="">找不到相关的键</exception>
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/// <exception cref="">权限不够,无法保存到web.config文件中</exception>
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public static void Modify(string key,string strValue)
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{
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string XPath="/configuration/appSettings/add[@key='?']";
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XmlDocument domWebConfig=new XmlDocument();
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domWebConfig.Load( (HttpContext.Current.Server.MapPath("../web.config")) );
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XmlNode addKey=domWebConfig.SelectSingleNode( (XPath.Replace("?",key)) );
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if(addKey == null)
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{
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throw new ArgumentException("没有找到<add key='"+key+"' value=
/>的配置节");
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}
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addKey.Attributes["value"].InnerText=strValue;
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domWebConfig.Save( (HttpContext.Current.Server.MapPath("../web.config")) );
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}
/// <summary>2
/// 修改web.config文件appSettings配置节中的Add里的value属性///作者:sp
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/// </summary>4
/// <remarks>5
/// 注意,调用该函数后,会使整个Web Application重启,导致当前所有的会话丢失6
/// </remarks>7
/// <param name="key">要修改的键key</param>8
/// <param name="strValue">修改后的value</param>9
/// <exception cref="">找不到相关的键</exception>10
/// <exception cref="">权限不够,无法保存到web.config文件中</exception>11
public static void Modify(string key,string strValue)12
{13
string XPath="/configuration/appSettings/add[@key='?']";14
XmlDocument domWebConfig=new XmlDocument();15
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domWebConfig.Load( (HttpContext.Current.Server.MapPath("../web.config")) );17
XmlNode addKey=domWebConfig.SelectSingleNode( (XPath.Replace("?",key)) );18
if(addKey == null)19
{20
throw new ArgumentException("没有找到<add key='"+key+"' value=
/>的配置节");21
}22
addKey.Attributes["value"].InnerText=strValue;23
domWebConfig.Save( (HttpContext.Current.Server.MapPath("../web.config")) );24
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}

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