当我启动页面进行调试时,我收到以下异常。objectDataSource 是为查询 oracle 数据库的 ADO TableAdapter 配置的。然后将 ods 绑定到 ASP.NET Gridview。我正在针对 .NET 4.0 进行编码。
如果我不绑定gridview,启动时没有问题。我可以完全配置 ods,为 gridview 定义列和行行为等,没有任何问题。我正在使用(据我所知)我过去成功使用过多次的相同方法来访问和显示数据。我已经尽可能地仔细阅读了代码,但无法找出问题所在。
异常信息:
Capabilities:Type=IE7,Name=IE,Version=7.0,MajorVersion=7,MinorVersion=0,Platform=WinNT,IsBeta=False,IsCrawler=False,IsAOL=False,IsWin16=False,IsWin32=True,SupportsFrames=True,SupportsTables=True,SupportsCookies=True,Ecmascriptversion=3.0,SupportsVBScript=True,SupportsJavaApplets=True,SupportsActiveXControls=True,CDF= False
Inner Exception Type: System.Reflection.TargetInvocationException Inner Exception: Exception has been thrown by the target of an invocation.
Inner Source: mscorlib
Inner Stack Trace: at System.RuntimeMethodHandle._InvokeMethodFast(IRuntimeMethodInfo method, Object target, Object[] arguments, SignatureStruct& sig, MethodAttributes methodAttributes, RuntimeType typeOwner)
at System.RuntimeMethodHandle.InvokeMethodFast(IRuntimeMethodInfo method, Object target, Object[] arguments, Signature sig, MethodAttributes methodAttributes, RuntimeType typeOwner)
at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture, Boolean skipVisibilityChecks)
at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
at System.Web.UI.WebControls.ObjectDataSourceView.InvokeMethod(ObjectDataSourceMethod method, Boolean disposeInstance, Object& instance)
at System.Web.UI.WebControls.ObjectDataSourceView.ExecuteSelect(DataSourceSelectArguments arguments)
at System.Web.UI.DataSourceView.Select(DataSourceSelectArguments arguments, DataSourceViewSelectCallback callback)
at System.Web.UI.WebControls.DataBoundControl.PerformSelect()
at System.Web.UI.WebControls.BaseDataBoundControl.DataBind()
at System.Web.UI.WebControls.GridView.DataBind()
at System.Web.UI.WebControls.BaseDataBoundControl.EnsureDataBound()
at System.Web.UI.WebControls.CompositeDataBoundControl.CreateChildControls()
标记:
<asp:GridView ID="gvGradename" runat="server" AutoGenerateColumns="False"
DataKeyNames="GRADENAME_ID" DataSourceID="odsGradename">
<Columns>
//Which columns are displayed are irrelevant. The error occurs with any columns, including none.
</Columns>
</asp:GridView>
<asp:ObjectDataSource ID="odsGradename" runat="server"
OldValuesParameterFormatString="original_{0}"
SelectMethod="GetDataByActiveName"
TypeName="pts.PTSTableAdapters.PTS_GRADENAMETableAdapter">
</asp:ObjectDataSource>
查询:
select gn.gradename_id
, gn.mill_id
, case when gn.gradename_id = 0 then upper(gn.name) else initcap(gn.name) end name
, m.name millname
, gn.audit_id
, gn.audit_dtm
, gn.audit_insert_dtm
, gn.audit_process_code
, gn.description
, gn.roll_width_threshold
from pts_gradename gn
, pts_mill m
where gn.is_generic = 1
and gn.is_active = 1
and gn.mill_id = m.mill_id
order by case when gn.gradename_id = 0 then null else initcap(gn.name) end nulls first
目前,我没有在代码隐藏中对它做任何事情。
编辑:在查询中包含表名,它们以前被编辑过。
此外,我可以预览表适配器中的数据,并接收预期的信息,因此查询本身似乎没有问题。