一、配置ext.net有两种方法，一是通过自动配置，即：工具--->Nuget包管理器--->管理解决方案的Nuget程序包--->搜索EXT.NET--->安装，安装完后，环境就这样搭建好了，然后要在使用的页面添加一行代码：

　　<%@ Register Assembly="Ext.Net" Namespace="Ext.Net" TagPrefix="ext" %>

二、通过手动去配置：

　　1、在Webconfig配置，代码如下：　　　

<?xml version="1.0" encoding="utf-8"?>
<!--
有关如何配置 ASP.NET 应用程序的详细信息，请访问
http://go.microsoft.com/fwlink/?LinkId=169433
-->
<configuration>
<!--ext.net_1-->
<configSections>
<section name="extnet" type="Ext.Net.GlobalConfig" requirePermission="false" />
</configSections>
<!--ext.net_1-->
<system.web>
<compilation debug="true" targetFramework="4.5.2"/>
<httpRuntime targetFramework="4.5.2"/>
<httpModules>
<add name="ApplicationInsightsWebTracking" type="Microsoft.ApplicationInsights.Web.ApplicationInsightsHttpModule, Microsoft.AI.Web"/>
</httpModules>
<!--ext.net_2-->
<!-- This httpHandlers config only required if using IIS6 (or lower) -->
<!--
<httpHandlers>
<add path="*/ext.axd" verb="*" type="Ext.Net.ResourceHandler" validate="false" />
</httpHandlers>
-->
<!-- This httpModules config only required if using IIS6 (or lower) -->
<!--
<httpModules>
<add name="DirectRequestModule" type="Ext.Net.DirectRequestModule, Ext.Net" />
</httpModules>
-->
<pages>
<controls>
<add assembly="Ext.Net" namespace="Ext.Net" tagPrefix="ext" />
</controls>
<namespaces>
<add namespace="Ext.Net" />
</namespaces>
</pages>
<!--ext.net_2-->

</system.web>
<system.codedom>
<compilers>
<compiler language="c#;cs;csharp" extension=".cs"
type="Microsoft.CodeDom.Providers.DotNetCompilerPlatform.CSharpCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"
warningLevel="4" compilerOptions="/langversion:6 /nowarn:1659;1699;1701"/>
<compiler language="vb;vbs;visualbasic;vbscript" extension=".vb"
type="Microsoft.CodeDom.Providers.DotNetCompilerPlatform.VBCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"
warningLevel="4" compilerOptions="/langversion:14 /nowarn:41008 /define:_MYTYPE=\&quot;Web\&quot; /optionInfer+"/>
</compilers>
</system.codedom>
<system.webServer>
<validation validateIntegratedModeConfiguration="false"/>
<modules>
<remove name="ApplicationInsightsWebTracking"/>
<add name="ApplicationInsightsWebTracking" type="Microsoft.ApplicationInsights.Web.ApplicationInsightsHttpModule, Microsoft.AI.Web"
preCondition="managedHandler"/>
<!--ext.net_3-->
<add name="DirectRequestModule" preCondition="managedHandler" type="Ext.Net.DirectRequestModule, Ext.Net" />
<!--ext.net_3-->
</modules>
<!--ext.net_4-->
<handlers>
<add name="DirectRequestHandler" verb="*" path="*/ext.axd" preCondition="integratedMode" type="Ext.Net.ResourceHandler" />
</handlers>
<!--ext.net_4-->
</system.webServer>
<!--ext.net_5,theme枚举值必须是以下各值中的一个: Default, Gray, Access, Slate, NoTheme。-->
<extnet theme="Gray" licenseKey="** Ext.NET LICENSE KEY HERE **" initScriptMode="Linked" />
<!--ext.net_5-->
</configuration>

　　2、添加dll引用：