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我对c＃和sharepoint都相当陌生，并且有非常基本的意外行为。我显然缺乏一些基本的故障排除技巧，希望有人能够指引我朝着正确的方向发展。Sharepoint 2010应用程序页面问题
我有一个按钮和一个标签的应用程序页面。我在页面加载事件中有一些代码来从外部列表中检索一些工作正常的信息。我有一个在返回错误的按钮中的代码的确切副本。我想知道为什么按钮在页面加载事件中的相同代码看起来很好并且很花哨时返回一个错误。
的C＃代码：
using System;
using Microsoft.SharePoint;
using Microsoft.SharePoint.WebControls;
using System.Text;
namespace farmBDCProj2.Layouts.farmBDCProj2
{
public partial class TestGetInfo : LayoutsPageBase
{
protected void Page_Load(object sender, EventArgs e)
{
StringBuilder output = new StringBuilder();
output.Append("<h2>Generated by PageLoad event</h2>");
SPContext context = SPContext.Current;
using(SPSite site = context.Site)
using (SPWeb web = site.AllWebs["BDC_SQL"])
{
SPList list = web.Lists["BDC_SQL"];
foreach (SPListItem item in list.Items)
{
output.AppendFormat("<br>item: {0}", item["ADName"]);
}
}
Label1.Text = output.ToString();
}
public void btn_click(object sender, EventArgs e)
{
StringBuilder output = new StringBuilder();
output.Append("<h2>Generated by button click event</h2>");
SPContext context = SPContext.Current;
using (SPSite site = context.Site)
using (SPWeb web = site.AllWebs["BDC_SQL"])
{
SPList list = web.Lists["BDC_SQL"];
foreach (SPListItem item in list.Items)
{
output.AppendFormat("<br>item: {0}", item["ADName"]);
}
}
Label1.Text = output.ToString();
}
}
}
aspx页面：
<%@ Assembly Name="$SharePoint.Project.AssemblyFullName$" %>
<%@ Import Namespace="Microsoft.SharePoint.ApplicationPages" %>
<%@ Register Tagprefix="SharePoint" Namespace="Microsoft.SharePoint.WebControls" Assembly="Microsoft.SharePoint, Version=14.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c" %>
<%@ Register Tagprefix="Utilities" Namespace="Microsoft.SharePoint.Utilities" Assembly="Microsoft.SharePoint, Version=14.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c" %>
<%@ Register Tagprefix="asp" Namespace="System.Web.UI" Assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" %>
<%@ Import Namespace="Microsoft.SharePoint" %>
<%@ Assembly Name="Microsoft.Web.CommandUI, Version=14.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c" %>
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="TestGetInfo.aspx.cs" Inherits="farmBDCProj2.Layouts.farmBDCProj2.TestGetInfo" DynamicMasterPageFile="~masterurl/default.master" %>
<asp:Content ID="PageHead" ContentPlaceHolderID="PlaceHolderAdditionalPageHead" runat="server">
</asp:Content>
<asp:Content ID="Main" ContentPlaceHolderID="PlaceHolderMain" runat="server">
<asp:Button ID="Button1" runat="server" Text="Click Here" OnClick="btn_click" />
<br />
<asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>
</asp:Content>
<asp:Content ID="PageTitle" ContentPlaceHolderID="PlaceHolderPageTitle" runat="server">
Application Page
</asp:Content>
<asp:Content ID="PageTitleInTitleArea" ContentPlaceHolderID="PlaceHolderPageTitleInTitleArea" runat="server" >
My Application Page
</asp:Content>
我得到的错误是在btn_click事件 '的foreach' 阶段和错误文本如下：
Microsoft.SharePoint.SPException was unhandled by user code
Message=Access denied by Business Data Connectivity.
Source=Microsoft.SharePoint
ErrorCode=-2146232832
StackTrace:
at Microsoft.SharePoint.SPListDataSource.GetEntityInstanceEnumerator(XmlNode xnMethodAndFilters)
at Microsoft.SharePoint.SPListDataSource.GetFilteredEntityInstancesInternal(XmlDocument xdQueryView, Boolean fFormatDates, Boolean fUTCToLocal, String firstRowId, Boolean fBackwardsPaging, String& bdcidFirstRow, String& bdcidNextPageRow, List`1& lstColumnNames, Dictionary`2& dictColumnsUsed, List`1& mapRowOrdering, List`1& lstEntityData)
at Microsoft.SharePoint.SPListDataSource.GetFilteredEntityInstances(XmlDocument xdQueryView, Boolean fFormatDates, Boolean fUTCToLocal, String firstRowId, Boolean fBackwardsPaging, String& bdcidFirstRow, String& bdcidNextPageRow, List`1& lstColumnNames, Dictionary`2& dictColumnsUsed, List`1& mapRowOrdering, List`1& lstEntityData)
at Microsoft.SharePoint.SPListItemCollection.EnsureEntityDataViewAndOrdering(String& bdcidFirstRow, String& bdcidNextPageFirstRow)
at Microsoft.SharePoint.SPListItemCollection.EnsureListItemsData()
at Microsoft.SharePoint.SPListItemCollection.get_Count()
at Microsoft.SharePoint.SPEntityInstanceEnumerator.System.Collections.IEnumerator.MoveNext()
at farmBDCProj2.Layouts.farmBDCProj2.TestGetInfo.btn_click(Object sender, EventArgs e)
at System.Web.UI.WebControls.Button.OnClick(EventArgs e)
at System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument)
at System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument)
at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
InnerException: Microsoft.BusinessData.Infrastructure.AccessDeniedException
Message=Access denied by Business Data Connectivity.
Source=Microsoft.SharePoint
StackTrace:
at Microsoft.SharePoint.BusinessData.Runtime.DataClassRuntime.ExecuteInternal(IDataClass thisDataClass, ILobSystemInstance lobSystemInstance, ILobSystem lobSystem, IMethodInstance methodInstanceToExecute, IMethod methodToExecute, IParameterCollection nonReturnParameters, Object[]& overrideArgs)
at Microsoft.SharePoint.BusinessData.Runtime.EntityRuntime.ExecuteInternal(IDataClass thisDataClass, ILobSystemInstance lobSystemInstance, ILobSystem lobSystem, IMethodInstance methodInstanceToExecute, IMethod methodToExecute, IParameterCollection nonReturnParameters, Object[]& overrideArgs, IFilterCollection filters)
at Microsoft.SharePoint.BusinessData.Runtime.EntityRuntime.ExecuteFiltered(IEntity this, IFilterCollection filterCollection, IMethodInstance methodInstanceToExecute, ILobSystemInstance lobSystemInstance)
at Microsoft.SharePoint.BusinessData.Runtime.EntityRuntime.<FindFiltered>b__3(IEntity e, IMethodInstance mi, IFilterCollection fc, ILobSystemInstance lsi)
at Microsoft.SharePoint.BusinessData.Runtime.EntityInstanceEnumeratorFactory.CreateEntityInstanceEnumerator(IEntity entity, IMethodInstance methodInstance, IFilterCollection filters, ILobSystemInstance lobSystemInstance, ExecutionCallBack executionCallBack)
at Microsoft.SharePoint.BusinessData.MetadataModel.Static.Entity.FindFiltered(IFilterCollection filterCollection, String finderName, ILobSystemInstance lobSystemInstance)
at Microsoft.SharePoint.SPListDataSource.GetEntityInstanceEnumerator(XmlNode xnMethodAndFilters)
InnerException:
任何和所有的帮助将不胜感激。
谢谢，马特。
这可能什么都没有做，但如果你当前的网站和网页，然后处理你应该处置这些对象。仅当这些对象不在当前范围内时才处置。这可能会导致奇怪的问题。 using构造自动调用dispose方法。这是一个分歧点。 – ScottE 2011-03-22 12:47:45