LightSwitch v1 显示红色 X 并且无法加载数据

问题描述

我使用在 Visual Studio 2010 Professional 上运行的 Visual Studio LightSwitch 2011 (v1) 制作了一个应用程序.它是一个桌面应用程序，我使用 SQL Server 身份验证连接到数据库.(所有客户端使用相同的用户名/密码).

该应用程序适用于大多数用户，但对于 4-5 个用户，它显示红色 X 并表示无法加载数据.这是有史以来最模糊的错误消息，我不知道是什么原因造成的.用户都可以从他们的 PC 访问我们的数据库，因为其他一些非灯光开关应用程序运行良好.这排除了任何网络/连接问题.

经过几天的搜索并试图弄清楚这一点，我还没有找到一种简单的方法来确定 red-X 错误的原因是什么.此外，用户位于不同的国家/地区，因此我无法物理访问他们的机器.我唯一需要做的就是这些用户都在运行 Windows 7(没有安装防火墙).其中一个人终于完成了 Windows 7 的全新安装，在安装应用程序时，他收到了 red-X(无法加载数据)错误.

有什么简单的方法可以找出为什么 lightswitch 无法从我们的数据库加载数据?(数据库 = SQL Server 2005)

感谢您的帮助.

解决方案

查看 .同一篇文章中也对此进行了解释.

I have made an application using Visual Studio LightSwitch 2011 (v1) running on Visual Studio 2010 Professional. It is a desktop application, and I use SQL Server Authentication to connect to the database. (Same username/password for all clients).

The application works perfectly for most users, but for 4-5 users, it is showing a red X and says that it is unable to load data. This is the most vague error message ever, and I have no idea what could cause it. The users are all able to access our database from their PCs because some other non-lightswitch applications are working fine. This rules out any network/connectivity issues.

After days of searching and trying to figure this out, I haven't found an easy way to determine what the cause of the red-X error is. Also, the users are located in a different country so I don't have physical access to their machines. The only thing I have to go on is that these users are all running Windows 7 (no firewalls installed). One of them finally did a clean-install of Windows 7, and on installing the application, he got the red-X (unable to load data) error.

Is there any easy way to figure out why lightswitch is unable to load data from our database? (Database = SQL Server 2005)

Thanks for the help.

解决方案

Check out Eric Erhardt's article. Here's a quote:

So you can enable diagnostics then open the trace at: your-lightswitch-application-address/trace.axd. You can then check the error details (screenshot taken from the blog article):

Another alternative way is to use Fiddler. It is also explained in the same article.

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