asp.net的ScriptManager和UpdatePanel控件失踪

问题描述：

我创建了一个新的ASP.NET Web应用程序，但对于ScriptManager的UpdatePanel的和对照失踪。谷歌搜索，并在web.config搞乱公平位后，我无法让他们正确安装。

I have created a new ASP.NET Web Application, but the controls for ScriptManager and UpdatePanel are missing. After a fair bit of googling, and messing with the web.config, I am unable to get them installed properly.

我在他们所安装并运行另一个项目，我已经穿过复制的所有从web.config中的code，但仍然没有运气。

I have another project in which they are installed and working, and I have copied all of the code from web.config across, but still no luck.

也许Visual Studio中有很多自动安装它的工具？或者是一厢情愿的想法？！

Maybe Visual Studio has a tool for installing it automatically?! Or is that wishful thinking?!

答

我通过添加以下到我的web.config文件中解决了这个问题...

I solved this issue by adding the following to my web.config file ...

  <system.web>    
    <pages>
      <controls>
        <add tagPrefix="asp" namespace="System.Web.UI" assembly="System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
      </controls>
    </pages>
  </system.web>

asp.net的ScriptManager和UpdatePanel控件失踪

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