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  • Ajax中“Sys未定义”错误的解决方法汇总

    错误:在Ajax应用中自定义脚本时出现"Sys未定义"的错误。
    解决方法1:把取得PageRequestManager实例的语句(如:var prm = Sys.WebForms.PageRequestManager.getInstance();
    )放在函数里面。
    解决方法2:把js代码放在ScriptManager控件定义之后。
    原因分析:ScriptManager控件放在body中
    而javascript代码放在了ScriptManager控件之前的位置
    因为html是逐行加载的
    由于var prm = Sys.PageRequestManager.getInstance();
    在加载ScriptManager控件的js代码之前就被调用了,
    所以就出现了Sys未定义的情况

    解决方法3:

    在配置文件的  <system.web>节点下加入

    <httpHandlers>
          <remove verb="*" path="*.asmx"/>
          <add verb="*" path="*.asmx" validate="false" type="Microsoft.Web.Script.Services.ScriptHandlerFactory, Microsoft.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
          <add verb="*" path="*_AppService.axd" validate="false" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
          <add verb="GET,HEAD" path="ScriptResource.axd" type="System.Web.Handlers.ScriptResourceHandler, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" validate="false"/>
     </httpHandlers>

    解决方法4:

    引用了"System.Web.Extensions.dll"就ok了。

    web.config配置如下:

    <?xml version="1.0"?>
    <!--
        注意: 除了手动编辑此文件以外,您还可以使用
        Web 管理工具来配置应用程序的设置。可以使用 Visual Studio 中的
         “网站”->“Asp.Net 配置”选项。
        设置和注释的完整列表在
        machine.config.comments 中,该文件通常位于
        \Windows\Microsoft.Net\Framework\v2.x\Config 中
    -->
    <configuration xmlns="http://schemas.microsoft.com/.NetConfiguration/v2.0">
     <appSettings>
      <add key="CrystalImageCleaner-AutoStart" value="true"/>
      <add key="CrystalImageCleaner-Sleep" value="60000"/>
      <add key="CrystalImageCleaner-Age" value="120000"/>
     </appSettings>
     <connectionStrings>
      <add name="dynetdata" connectionString="Data Source=192.168.7.10;Initial Catalog=DyNet;Persist Security Info=True;User ID=dynetuser;Password=nmamtf" providerName="System.Data.SqlClient"/>
     </connectionStrings>
     <system.web>
      <!--
                设置 compilation debug="true" 可将调试符号插入
                已编译的页面中。但由于这会
                影响性能,因此只应在开发过程中设置
                此值。

                Visual Basic 选项:
                设置 strict="true" 将禁止所有会导致
                数据丢失的类型转换。
                设置 explicit="true" 将强制声明所有变量。
            -->
      <authorization>
       <allow users="?"/>
      </authorization>
      <httpRuntime executionTimeout="160"/>
      <sessionState timeout="120"/>
      <compilation debug="true" strict="false" explicit="true">
       <assemblies>
        <add assembly="System.Design, Version=2.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/>
        <add assembly="System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
        <add assembly="System.Data.OracleClient, Version=2.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
        <add assembly="System.Management, Version=2.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/>
        <add assembly="CrystalDecisions.Web, Version=10.2.3600.0, Culture=neutral, PublicKeyToken=692FBEA5521E1304"/>
        <add assembly="CrystalDecisions.Shared, Version=10.2.3600.0, Culture=neutral, PublicKeyToken=692FBEA5521E1304"/>
        <add assembly="CrystalDecisions.ReportSource, Version=10.2.3600.0, Culture=neutral, PublicKeyToken=692FBEA5521E1304"/>
        <add assembly="CrystalDecisions.Enterprise.Framework, Version=10.2.3600.0, Culture=neutral, PublicKeyToken=692FBEA5521E1304"/>
        <add assembly="CrystalDecisions.Enterprise.Desktop.Report, Version=10.2.3600.0, Culture=neutral, PublicKeyToken=692FBEA5521E1304"/>
        <add assembly="CrystalDecisions.CrystalReports.Engine, Version=10.2.3600.0, Culture=neutral, PublicKeyToken=692FBEA5521E1304"/>
        <add assembly="CrystalDecisions.Enterprise.InfoStore, Version=10.2.3600.0, Culture=neutral, PublicKeyToken=692FBEA5521E1304"/>
        <add assembly="CrystalDecisions.ReportAppServer.ClientDoc, Version=10.2.3600.0, Culture=neutral, PublicKeyToken=692fbea5521e1304"/>
        <add assembly="System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
        <add assembly="System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
        <add assembly="System.Web, Version=2.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/>
        <add assembly="System.Configuration, Version=2.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/>
        <add assembly="System.Xml, Version=2.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
        <add assembly="System.Drawing, Version=2.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/>
        <add assembly="System.Data, Version=2.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
        <add assembly="System.Drawing.Design, Version=2.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/></assemblies>
       <buildProviders>
        <add extension=".rdlc" type="Microsoft.Reporting.RdlBuildProvider, Microsoft.ReportViewer.Common, Version=8.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"/>
       </buildProviders>
      </compilation>
      <pages>
       <namespaces>
        <clear/>
        <add namespace="System"/>
        <add namespace="System.Collections"/>
        <add namespace="System.Collections.Specialized"/>
        <add namespace="System.Configuration"/>
        <add namespace="System.Text"/>
        <add namespace="System.Text.RegularExpressions"/>
        <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>
      </pages>
      <!--
                通过 <authentication> 节可以配置 ASP.NET 使用的
                安全身份验证模式,
                以标识传入的用户。
            -->
      <authentication mode="None"/>
      <!--
                如果在执行请求的过程中出现未处理的错误,
                则通过 <customErrors> 节可以配置相应的处理步骤。具体说来,
                开发人员通过该节可以配置
                要显示的 html 错误页
                以代替错误堆栈跟踪。

            <customErrors mode="RemoteOnly" defaultRedirect="GenericErrorPage.htm">
                <error statusCode="403" redirect="NoAccess.htm" />
                <error statusCode="404" redirect="FileNotFound.htm" />
            </customErrors>
            -->
      <httpHandlers>
       <add path="CrystalImageHandler.aspx" verb="GET" type="CrystalDecisions.Web.CrystalImageHandler, CrystalDecisions.Web, Version=10.2.3600.0, Culture=neutral, PublicKeyToken=692fbea5521e1304"/>
       <add path="Reserved.ReportViewerWebControl.axd" verb="*" type="Microsoft.Reporting.WebForms.HttpHandler, Microsoft.ReportViewer.WebForms, Version=8.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" validate="false"/>
       <remove verb="*" path="*.asmx"/>
       <add verb="*" path="*.asmx" validate="false" type="Microsoft.Web.Script.Services.ScriptHandlerFactory, Microsoft.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
       <add verb="GET" path="ScriptResource.axd" type="Microsoft.Web.Handlers.ScriptResourceHandler" validate="false"/>
      </httpHandlers>
     </system.web>
    </configuration>

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  • 原文地址:https://www.cnblogs.com/lavenderzh/p/1030186.html
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