是最好处理SQL异常，还是在Global.asax中使用customError页面和Application_Error方法？

I am using ASP.Net 2.0. I found myself in an awkward situtation because I could not find the cause of an error. Up until now I have been using this idiom when it comes to accessing data.I am using ASP.Net 2.0. I found myself in an aw