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我對c＃和sharepoint都相當陌生，並且有非常基本的意外行爲。我顯然缺乏一些基本的故障排除技巧，希望有人能夠指引我朝着正確的方向發展。Sharepoint 2010應用程序頁面問題
我有一個按鈕和一個標籤的應用程序頁面。我在頁面加載事件中有一些代碼來從外部列表中檢索一些工作正常的信息。我有一個在返回錯誤的按鈕中的代碼的確切副本。我想知道爲什麼按鈕在頁面加載事件中的相同代碼看起來很好並且很花哨時返回一個錯誤。
的C＃代碼：
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頁面：
<%@ 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>
我得到的錯誤是在btn_click事件 '的foreach' 階段和錯誤文本如下：
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:
任何和所有的幫助將不勝感激。
謝謝，馬特。
這可能什麼都沒有做，但如果你當前的網站和網頁，然後處理你應該處置這些對象。僅當這些對象不在當前範圍內時才處置。這可能會導致奇怪的問題。 using構造自動調用dispose方法。這是一個分歧點。 – ScottE 2011-03-22 12:47:45