<font face="黑体"><font face="仿宋_GB2312"><font size="5"><font color="Red">有那位大虾，帮我看一下是怎么回事？本人在此谢谢了！</font></font></font></font><br/>“/ManagaSyatem”应用程序中的服务器错误。<br/>--------------------------------------------------------------------------------<br/><br/>未将对象引用设置到对象的实例。 <br/>说明: 执行当前 Web 请求期间，出现未处理的异常。请检查堆栈跟踪信息，以了解有关该错误以及代码中导致错误的出处的详细信息。 <br/><br/>异常详细信息: System.NullReferenceException: 未将对象引用设置到对象的实例。<br/><br/>源错误: <br/><br/><br/>行 15: public partial class Student : System.Web.UI.Page<br/>行 16: {<br/>行 17:&nbsp;&nbsp;&nbsp;&nbsp; string connectionString = ConfigurationManager.ConnectionStrings[&quot;DataBaseConnectionString&quot;].ConnectionString;<br/>行 18: <br/>行 19:&nbsp;&nbsp;&nbsp;&nbsp; protected void Page_Load(object sender, EventArgs e)<br/> <br/><br/>源文件: c:\TDDOWNLOAD\ManagaSyatem\Student.aspx.cs&nbsp;&nbsp;&nbsp;&nbsp;行: 17 <br/><br/>堆栈跟踪: <br/><br/><br/>[NullReferenceException: 未将对象引用设置到对象的实例。]<br/>&nbsp;&nbsp; Student..ctor() in c:\TDDOWNLOAD\ManagaSyatem\Student.aspx.cs:17<br/>&nbsp;&nbsp; ASP.student_aspx..ctor() in c:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files\managasyatem\4b74b285\5959a6d3\App_Web_vaq2bfy8.16.cs:0<br/>&nbsp;&nbsp; __ASP.FastObjectFactory_app_web_vaq2bfy8.Create_ASP_student_aspx() in c:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files\managasyatem\4b74b285\5959a6d3\App_Web_vaq2bfy8.20.cs:0<br/>&nbsp;&nbsp; System.Web.Compilation.BuildResultCompiledType.CreateInstance() +49<br/>&nbsp;&nbsp; System.Web.Compilation.BuildManager.CreateInstanceFromVirtualPath(VirtualPath virtualPath, Type requiredBaseType, HttpContext context, Boolean allowCrossApp, Boolean noAssert) +115<br/>&nbsp;&nbsp; System.Web.UI.PageHandlerFactory.GetHandlerHelper(HttpContext context, String requestType, VirtualPath virtualPath, String physicalPath) +31<br/>&nbsp;&nbsp; System.Web.UI.PageHandlerFactory.System.Web.IHttpHandlerFactory2.GetHandler(HttpContext context, String requestType, VirtualPath virtualPath, String physicalPath) +40<br/>&nbsp;&nbsp; System.Web.HttpApplication.MapHttpHandler(HttpContext context, String requestType, VirtualPath path, String pathTranslated, Boolean useAppConfig) +139<br/>&nbsp;&nbsp; System.Web.MapHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +120<br/>&nbsp;&nbsp; System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean&amp; completedSynchronously) +155<br/><br/> <br/><br/><br/>--------------------------------------------------------------------------------<br/>版本信息: Microsoft .NET Framework 版本:2.0.50727.42; ASP.NET 版本:2.0.50727.42