C# Unrecognized configuration section system.serviceModel

公司的项目，由于老项目里面使用的是.net framework 2.0环境，而我们开发使用的却是VS2008，所以在创建新的应用的时候，把环境设置为.net frameword2.0。

这是一个客户端界面程序，应用到web服务。

但在运行的时候出现以下错误：

)
   at System.Configuration.ConfigurationSchemaErrors.ThrowIfErrors(Boolean ignoreLocal)
   at System.Configuration.BaseConfigurationRecord.ThrowIfParseErrors(ConfigurationSchemaErrors schemaErrors)
   at System.Configuration.BaseConfigurationRecord.ThrowIfInitErrors()
   at System.Configuration.ClientConfigurationSystem.EnsureInit(String configKey)
   --- End of inner exception stack trace ---
   at System.Configuration.ConfigurationManager.GetSection(String sectionName)
   at System.Xml.Serialization.XmlSerializerCompilerParameters.Create(String location)
   at System.Xml.Serialization.TempAssembly..ctor(XmlMapping[] xmlMappings, Type[] types, String defaultNamespace, String location, Evidence evidence)
   at System.Xml.Serialization.XmlSerializer.FromMappings(XmlMapping[] mappings, Type type)
   at System.Web.Services.Protocols.SoapClientType..ctor(Type type)
   at System.Web.Services.Protocols.SoapHttpClientProtocol..ctor()
   at ***.CMIService.CMIClientService..ctor() in D:\CMI\TMSEXE\Web References\CMIService\Reference.cs:line 97
   at ***.MainForm.Login() in D:\CMI\TMSEXE\form\MainForm.cs:line 67

上网找了下，只要把配置文件中的一段注释掉就行了，见下面代码

配置文件如下：

<configSections>
        <sectionGroup name="applicationSettings" type="System.Configuration.ApplicationSettingsGroup, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" >
            <section name="***.Properties.Settings" type="System.Configuration.ClientSettingsSection, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
        </sectionGroup>
    </configSections>
    
    <applicationSettings>
        <***.Properties.Settings>
            <setting name="****"
                serializeAs="String">
                <value>http://www.****.com/***Service.asmx</value>
            </setting>
        </***.Properties.Settings>
    </applicationSettings>
</configuration>