任何人都可以解释此异常吗?在 '/ eims_web' 应用空引用异常堆栈
服务器错误:
Object reference not set to an instance of an object.
说明:
An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
异常详细信息:
System.NullReferenceException: Object reference not set to an instance of an object.
源错误:
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
堆栈跟踪:
[NullReferenceException: Object reference not set to an instance of an object.]
System.Xml.XmlLoader.Load(XmlDocument doc, XmlReader reader, Boolean preserveWhitespace) +24
System.Xml.XmlDocument.Load(XmlReader reader) +108
System.Web.UI.WebControls.XmlDataSource.PopulateXmlDocument(XmlDocument document, CacheDependency& dataCacheDependency, CacheDependency& transformCacheDependency) +342
System.Web.UI.WebControls.XmlDataSource.GetXmlDocument() +253
System.Web.UI.WebControls.XmlHierarchicalDataSourceView.Select() +51
System.Web.UI.WebControls.Menu.DataBindItem(MenuItem item) +326
System.Web.UI.WebControls.Menu.PerformDataBinding() +99
System.Web.UI.WebControls.HierarchicalDataBoundControl.PerformSelect() +126
System.Web.UI.WebControls.BaseDataBoundControl.DataBind() +125
System.Web.UI.WebControls.Menu.DataBind() +29
System.Web.UI.WebControls.BaseDataBoundControl.EnsureDataBound() +104
System.Web.UI.WebControls.Menu.EnsureDataBound() +70
System.Web.UI.WebControls.BaseDataBoundControl.OnPreRender(EventArgs e) +43
System.Web.UI.WebControls.Menu.OnPreRender(EventArgs e, Boolean registerScript) +89
System.Web.UI.WebControls.Menu.OnPreRender(EventArgs e) +63
System.Web.UI.Control.PreRenderRecursiveInternal() +200
System.Web.UI.Control.PreRenderRecursiveInternal() +322
System.Web.UI.Control.PreRenderRecursiveInternal() +322
System.Web.UI.Control.PreRenderRecursiveInternal() +322
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +4837
它看起来像你的XmlDocument未能加载。确保你的xml声明是正确的,并且xml结构中没有错误。 – 2011-02-01 05:54:37