如何更改项目的.NET版本？ [英] how can I change the version of .NET for my project?
问题描述
我的LINQ表达式不起作用。最有可能是.NET版本。
当我运行程序时，网页显示此错误而不是错误：
My LINQ expression does not works. Most probably it was for the version of .NET.
Instead of error when I run the program the web page shows this error :
Source Error:
Line 161: List<string> globalTablesList = GetTableNames(dt);
Line 162:
Line 163: List<string> commonTableList = (from item in distinctItem
Line 164: where globalTablesList.Contains(item)
Line 165: select item).ToList();
Source File: d:\BIPORTAL-Dev\App_Code\Service.cs Line: 163
Show Detailed Compiler Output:
C：\Program Files（x86）\ Microsoft Visual Studio 9.0 \Common7 \IDE> C：\ Windows \ Microsoft.NET.NET \ Framework \v2.0.50727 \csc.exe/ t：library / utf8output / R：C：\ Windows \assembly \ GAC_MSIL \ System \\ \\ _2.0.0.0__b77a5c561934e089\System.dll/ R:\"C:\Windows\assembly\GAC_32\System.Web\2.0.0.0__b03f5f7f11d50a3a\System.Web.dll/ R：C ：\ Windows \assembly \ GAC_MSIL \ System.Web.Mobile \2.0.0.0__b03f5f7f11d50a3a \ System.Web.Mobile.dll/ R：C：\ Windows \assembly \ GAC_MSIL \ System.WorkflowServices\3.5.0.0__31bf3856ad364e35\System.WorkflowServices.dll/ R:\"C:\Windows\assembly\GAC_MSIL\System.Configuration\2.0.0.0__b03f5f7f11d50a3a\System.Configuration.dll / R:\"C:\Windows\assembly\GAC_MSIL \ System.Core\3.5.0.0__b77a5c561934e089\System.Core.dll/ R：C：\ Windows \assembly \ GAC_MSIL \System.Drawing\2.0.0.0__b03f5f7f11d50a3a\System.Drawing.dll/ R：C：\ Windows \\ assembly \ GAC_MSIL \ System.ServiceModel \\ 03.0.0__b77a5c561934e089 \ System.ServiceModel.dll/ R:\"C:\Windows\assembly\GAC_MSIL\System.Data.DataSetExtensions\3.5.0.0 __b77a5c561934e089\System.Data.DataSetExtensions.dll/ R:\"C:\Windows\assembly\GAC_MSIL\System.Runtime.Serialization\3.0.0.0__b77a5c561934e089\System.Runtime.Serialization.dll/ R：C：\ Windows \ Microsoft.NET\Framework\v2.0.50727\mscorlib.dll/ R:\"C:\Windows\assembly\GAC_MSIL \ System.Xml.Linq \\ \\ 3.5.0.0__b77a5c561934e089\System.Xml.Linq.dll/ R:\"C:\Windows\assembly\GAC_MSIL \ System.Web.Services \\\ 2.0.0.0__b03f5f7f11d50a3a \ System.Web.Services .dll/R:\"C:\Windows\assembly\GAC_MSIL\System.IdentityModel\3.0.0.0__b77a5c561934e089\System.IdentityModel.dll/ R：C：\ Windows \assembly \\ \\GAC_32\System.EnterpriseServices\2.0.0.0__b03f5f7f 11d50a3a \ System.EnterpriseServices.dll/ R:\"C:\Windows\assembly\GAC_MSIL\System.ServiceModel.Web\3.5.0.0__31bf3856ad364e35\System.ServiceModel.Web.dll/ R： C：\ Windows \assembly\GAC_MSIL \ System.Xml \\\ 2.0.0.0__b77a5c561934e089 \ System.Xml.dll/ R：C：\ Windows \assembly \ GAC_MSIL \ System。 Web.Extensions\\\\\\\\ .dll/out:\"C:\Users\suman.SSD-TECH\AppData\Local\Temp\Temporary ASP.NET Files\biportal-dev \\\\\\\\\\\\\\\\\ prcd4lbb.dll/ D：DEBUG / debug + / optimize- / w：4 / nowarn：1659; 1699; 1701C：\ Users\suman.SSD-TECH \ AppData \ Local \Temp\Temporary ASP.NET Files \biportal-dev \ 947cac42 \ 73de6232 \ App_Code.prcd4lbb.0.csC：\ Users \ suman.SSD-TECH \\ AppData \ Local \Temp \Temporary ASP.NET Files \biportal-dev \ 947cac42 \ 73de6232 \ App_Code.prcd4lbb.1.csC：\ Users\suman.SSD-TECH \\ \\ AppData \ Local \ Temp \Temporary ASP.NET Files \biportal-dev \ 947cac42 \73de6232 \ App_Code.prcd4lbb.2.csC：\ Users\suman.SSD-TECH \\ \\ AppData \本地\Temp \Temporary ASP.NET Files \biportal-dev \ 947cac42 \ 73de6232 \ App_Code.prcd4lbb.3.csC：\ Users\suman.SSD-TECH \\ \\ AppData \本地\Temp \Temporary ASP.NET Files \biportal-dev \ 947cac42 \ 73de6232 \ App_Code.prcd4lbb.4.csC：\ Users \ suman.SSD-TECH \\ \\ AppData \本地\Temp \Temporary ASP.NET Files \biportal-dev \ 947cac42 \ 73de6232 \ App_Code.prcd4lbb.5.cs
这是我的网络配置文件：
C:\Program Files (x86)\Microsoft Visual Studio 9.0\Common7\IDE> "C:\Windows\Microsoft.NET\Framework\v2.0.50727\csc.exe" /t:library /utf8output /R:"C:\Windows\assembly\GAC_MSIL\System\2.0.0.0__b77a5c561934e089\System.dll" /R:"C:\Windows\assembly\GAC_32\System.Web\2.0.0.0__b03f5f7f11d50a3a\System.Web.dll" /R:"C:\Windows\assembly\GAC_MSIL\System.Web.Mobile\2.0.0.0__b03f5f7f11d50a3a\System.Web.Mobile.dll" /R:"C:\Windows\assembly\GAC_MSIL\System.WorkflowServices\3.5.0.0__31bf3856ad364e35\System.WorkflowServices.dll" /R:"C:\Windows\assembly\GAC_MSIL\System.Configuration\2.0.0.0__b03f5f7f11d50a3a\System.Configuration.dll" /R:"C:\Windows\assembly\GAC_MSIL\System.Core\3.5.0.0__b77a5c561934e089\System.Core.dll" /R:"C:\Windows\assembly\GAC_MSIL\System.Drawing\2.0.0.0__b03f5f7f11d50a3a\System.Drawing.dll" /R:"C:\Windows\assembly\GAC_MSIL\System.ServiceModel\3.0.0.0__b77a5c561934e089\System.ServiceModel.dll" /R:"C:\Windows\assembly\GAC_MSIL\System.Data.DataSetExtensions\3.5.0.0__b77a5c561934e089\System.Data.DataSetExtensions.dll" /R:"C:\Windows\assembly\GAC_MSIL\System.Runtime.Serialization\3.0.0.0__b77a5c561934e089\System.Runtime.Serialization.dll" /R:"C:\Windows\Microsoft.NET\Framework\v2.0.50727\mscorlib.dll" /R:"C:\Windows\assembly\GAC_MSIL\System.Xml.Linq\3.5.0.0__b77a5c561934e089\System.Xml.Linq.dll" /R:"C:\Windows\assembly\GAC_MSIL\System.Web.Services\2.0.0.0__b03f5f7f11d50a3a\System.Web.Services.dll" /R:"C:\Windows\assembly\GAC_MSIL\System.IdentityModel\3.0.0.0__b77a5c561934e089\System.IdentityModel.dll" /R:"C:\Windows\assembly\GAC_32\System.EnterpriseServices\2.0.0.0__b03f5f7f11d50a3a\System.EnterpriseServices.dll" /R:"C:\Windows\assembly\GAC_MSIL\System.ServiceModel.Web\3.5.0.0__31bf3856ad364e35\System.ServiceModel.Web.dll" /R:"C:\Windows\assembly\GAC_MSIL\System.Xml\2.0.0.0__b77a5c561934e089\System.Xml.dll" /R:"C:\Windows\assembly\GAC_MSIL\System.Web.Extensions\3.5.0.0__31bf3856ad364e35\System.Web.Extensions.dll" /R:"C:\Windows\assembly\GAC_32\System.Data\2.0.0.0__b77a5c561934e089\System.Data.dll" /out:"C:\Users\suman.SSD-TECH\AppData\Local\Temp\Temporary ASP.NET Files\biportal-dev\947cac42\73de6232\App_Code.prcd4lbb.dll" /D:DEBUG /debug+ /optimize- /w:4 /nowarn:1659;1699;1701 "C:\Users\suman.SSD-TECH\AppData\Local\Temp\Temporary ASP.NET Files\biportal-dev\947cac42\73de6232\App_Code.prcd4lbb.0.cs" "C:\Users\suman.SSD-TECH\AppData\Local\Temp\Temporary ASP.NET Files\biportal-dev\947cac42\73de6232\App_Code.prcd4lbb.1.cs" "C:\Users\suman.SSD-TECH\AppData\Local\Temp\Temporary ASP.NET Files\biportal-dev\947cac42\73de6232\App_Code.prcd4lbb.2.cs" "C:\Users\suman.SSD-TECH\AppData\Local\Temp\Temporary ASP.NET Files\biportal-dev\947cac42\73de6232\App_Code.prcd4lbb.3.cs" "C:\Users\suman.SSD-TECH\AppData\Local\Temp\Temporary ASP.NET Files\biportal-dev\947cac42\73de6232\App_Code.prcd4lbb.4.cs" "C:\Users\suman.SSD-TECH\AppData\Local\Temp\Temporary ASP.NET Files\biportal-dev\947cac42\73de6232\App_Code.prcd4lbb.5.cs"
This is my web config file:
<?xml version="1.0"?>
<configuration>
<configSections>
<sectionGroup name="system.web.extensions" type="System.Web.Configuration.SystemWebExtensionsSectionGroup, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">
<sectionGroup name="scripting" type="System.Web.Configuration.ScriptingSectionGroup, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">
<section name="scriptResourceHandler" type="System.Web.Configuration.ScriptingScriptResourceHandlerSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication"/>
<sectionGroup name="webServices" type="System.Web.Configuration.ScriptingWebServicesSectionGroup, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">
<section name="jsonSerialization" type="System.Web.Configuration.ScriptingJsonSerializationSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="Everywhere"/>
<section name="profileService" type="System.Web.Configuration.ScriptingProfileServiceSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication"/>
<section name="authenticationService" type="System.Web.Configuration.ScriptingAuthenticationServiceSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication"/>
<section name="roleService" type="System.Web.Configuration.ScriptingRoleServiceSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication"/>
</sectionGroup>
</sectionGroup>
</sectionGroup>
</configSections>
<appSettings/>
<connectionStrings>
<!--<add name="cnStringMain" connectionString="Data Source=192.168.1.10;Initial Catalog=BIModel;User ID=sa;Password=Nopass123" />-->
<add name="cnStringMain" connectionString="Data Source=192.168.241.2;Initial Catalog=BIModel;User ID=sa;Password=Nopass123" />
<!--<add name="cnStringMain" connectionString="Data Source=JAMILAH\SQLEXPRESS;Initial Catalog=BIModel;Integrated Security=True;User ID=;Password=" providerName="System.Data.SqlClient"/>-->
</connectionStrings>
<system.web>
<!--
Set compilation debug="true" to insert debugging
symbols into the compiled page. Because this
affects performance, set this value to true only
during development.
Visual Basic options:
Set strict="true" to disallow all data type conversions
where data loss can occur.
Set explicit="true" to force declaration of all variables.
-->
<compilation debug="true" strict="false" explicit="true">
<assemblies>
<add assembly="System.Core, Version=3.5.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
<add assembly="System.Data.DataSetExtensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
<add assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
<add assembly="System.Xml.Linq, Version=3.5.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
</assemblies>
</compilation>
<pages>
<namespaces>
<clear/>
<add namespace="System"/>
<add namespace="System.Collections"/>
<add namespace="System.Collections.Generic"/>
<add namespace="System.Collections.Specialized"/>
<add namespace="System.Configuration"/>
<add namespace="System.Text"/>
<add namespace="System.Text.RegularExpressions"/>
<add namespace="System.Linq"/>
<add namespace="System.Xml.Linq"/>
<add namespace="System.Web"/>
<add namespace="System.Web.Caching"/>
<add namespace="System.Web.SessionState"/>
<add namespace="System.Web.Security"/>
<add namespace="System.Web.Profile"/>
<add namespace="System.Web.UI"/>
<add namespace="System.Web.UI.WebControls"/>
<add namespace="System.Web.UI.WebControls.WebParts"/>
<add namespace="System.Web.UI.HtmlControls"/>
</namespaces>
<controls>
<add tagPrefix="asp" namespace="System.Web.UI" assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
<add tagPrefix="asp" namespace="System.Web.UI.WebControls" assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
</controls>
</pages>
<!--
The <authentication> section enables configuration
of the security authentication mode used by
ASP.NET to identify an incoming user.
-->
<authentication mode="Windows"/>
<!--
The <customErrors> section enables configuration
of what to do if/when an unhandled error occurs
during the execution of a request. Specifically,
it enables developers to configure html error pages
to be displayed in place of a error stack trace.
-->
<customErrors mode="RemoteOnly" defaultRedirect="HTMLPage1.htm">
<error statusCode="403" redirect="NoAccess.htm" />
<error statusCode="404" redirect="FileNotFound.htm" />
</customErrors>
<httpHandlers>
<remove verb="*" path="*.asmx"/>
<add verb="*" path="*.asmx" validate="false" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
<add verb="*" path="*_AppService.axd" validate="false" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
<add verb="GET,HEAD" path="ScriptResource.axd" type="System.Web.Handlers.ScriptResourceHandler, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" validate="false"/>
</httpHandlers>
<httpModules>
<add name="ScriptModule" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
</httpModules>
</system.web>
<system.codedom>
<compilers>
<compiler language="vb;vbs;visualbasic;vbscript" extension=".vb" warningLevel="4" type="Microsoft.VisualBasic.VBCodeProvider, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
<providerOption name="CompilerVersion" value="v3.5"/>
<providerOption name="OptionInfer" value="true"/>
<providerOption name="WarnAsError" value="false"/>
</compiler>
</compilers>
</system.codedom>
<!--
The system.webServer section is required for running ASP.NET AJAX under Internet
Information Services 7.0. It is not necessary for previous version of IIS.
-->
<system.webServer>
<validation validateIntegratedModeConfiguration="false"/>
<modules>
<remove name="ScriptModule"/>
<add name="ScriptModule" preCondition="managedHandler" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
</modules>
<handlers>
<remove name="WebServiceHandlerFactory-Integrated"/>
<remove name="ScriptHandlerFactory"/>
<remove name="ScriptHandlerFactoryAppServices"/>
<remove name="ScriptResource"/>
<add name="ScriptHandlerFactory" verb="*" path="*.asmx" preCondition="integratedMode" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
<add name="ScriptHandlerFactoryAppServices" verb="*" path="*_AppService.axd" preCondition="integratedMode" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
<add name="ScriptResource" preCondition="integratedMode" verb="GET,HEAD" path="ScriptResource.axd" type="System.Web.Handlers.ScriptResourceHandler, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
</handlers>
<httpProtocol>
<customHeaders>
<add name="Access-Control-Allow-Origin" value="*"/>
<add name="Access-Control-Allow-Headers" value="Content-Type"/>
</customHeaders>
</httpProtocol>
</system.webServer>
<runtime>
<assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
<dependentAssembly>
<assemblyIdentity name="System.Web.Extensions" publicKeyToken="31bf3856ad364e35"/>
<bindingRedirect oldVersion="1.0.0.0-1.1.0.0" newVersion="3.5.0.0"/>
</dependentAssembly>
<dependentAssembly>
<assemblyIdentity name="System.Web.Extensions.Design" publicKeyToken="31bf3856ad364e35"/>
<bindingRedirect oldVersion="1.0.0.0-1.1.0.0" newVersion="3.5.0.0"/>
</dependentAssembly>
</assemblyBinding>
</runtime>
</configuration>
从这里我们可以看到没有任何部分选择低于3.5版本。但是错误显示它在版本2.0上运行我将如何解决问题？
From here we can see there is no portion select less than version 3.5. But error show it runs on version 2.0 how i will solve the problem?
推荐答案
右键单击您的项目 - >属性
从那里你可以改变项目的目标框架。
Right click on your project -> Properties
From there you will be able to change the target framework of your project.
右键单击你的项目名称可在解决方案资源管理器中找到，现在点击属性。
点击属性后，一个新窗口将打开，在应用程序中你会看到一个选项作为目标框架，它是一个下拉列表，从这里你可以选择框架。
Right Click on your project name which is available in the Solution Explorer, Now click on properties.
On clicking the Properties a new Window will get open, here in the "Application" you will see an option as "Target Framework", it's a dropdown, from here you can choose the Framework.
嘿兄弟，
你是点击解决方案'WebApplication1'（1项目）。你需要点击WebApplication1
这将出现在解决方案'WebApplication1'（1项目）下面。
Hey Bro,
You are clicking on "Solution 'WebApplication1'(1 Project)". You need to click on "WebApplication1"
This would be present just below the "Solution 'WebApplication1'(1 Project)".
这篇关于如何更改项目的.NET版本？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
