我正在尝试为 SharePoint 2010 构建一个自定义活动以在工作流中使用。在设计器中，我可以在“自定义活动”下的功能区上的“操作”下拉菜单中看到该活动。但是，该元素从未在设计器中实现，我不知道如何调试此问题。
我尝试将 Debugger.Break() 放入事件处理程序中，但这会导致应用程序事件日志中的条目显示An unhandled exception ('Launch for user') occurred in w3wp.exe [xxxx]. Just-In-Time debugging this exception failed with the following error: Not enough storage is available to complete this operation.此外，将调试器附加到w3wp.exe进程不会在任何断点处停止。
我已经在 SharePoint 2010 内部打开了详细日志记录（并且日志记录非常详细！），但它似乎不包含有关组件的任何信息或设计器未加载组件的原因。
这是这个非常基本的活动的相关代码片段。我在这里做错了什么？
using System;
using System.ComponentModel;
using System.Diagnostics;
using System.IO;
using System.Workflow.ComponentModel;
using System.Workflow.Activities;
using Microsoft.SharePoint;
using Microsoft.SharePoint.WorkflowActions;
namespace SharePoint.Activities.IO
{
public partial class CopyFile : SequenceActivity
{
public CopyFile()
{
InitializeComponent();
}
public static DependencyProperty SourceDirectoryProperty = DependencyProperty.Register("SourceDirectory", typeof(string), typeof(CopyFile));
public static DependencyProperty TargetDirectoryProperty = DependencyProperty.Register("TargetDirectory", typeof(string), typeof(CopyFile));
public static DependencyProperty ResultProperty = DependencyProperty.Register("Result", typeof(string), typeof(CopyFile));
public static DependencyProperty CreateDateProperty = DependencyProperty.Register("CreateDate", typeof(DateTime), typeof(CopyFile));
public static DependencyProperty CompletionDateProperty = DependencyProperty.Register("CompletionDate", typeof(DateTime), typeof(CopyFile));
public static DependencyProperty WFContextProperty = DependencyProperty.Register("WFContext", typeof(WorkflowContext), typeof(CopyFile));
[Description("Path the files to perform the operation on")]
[Browsable(true)]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Visible)]
public string SourceDirectory
{
get { return (string)GetValue(SourceDirectoryProperty); }
set { SetValue(SourceDirectoryProperty, value); }
}
[Description("Path the files are copied to")]
[Browsable(true)]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Visible)]
public string TargetDirectory
{
get { return (string)GetValue(TargetDirectoryProperty); }
set { SetValue(TargetDirectoryProperty, value); }
}
[Description("Once the the operation completes, this is set to OK or the exception information")]
[Browsable(true)]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Visible)]
public string Result
{
get { return (string)GetValue(ResultProperty); }
set { SetValue(ResultProperty, value); }
}
[Description("When the request was created")]
[Browsable(true)]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Visible)]
public DateTime CreateDate
{
get { return (DateTime)GetValue(CreateDateProperty); }
set { SetValue(CreateDateProperty, value); }
}
[Description("When execution stoped")]
[Browsable(true)]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Visible)]
public DateTime CompletionDateDate
{
get { return (DateTime)GetValue(CompletionDateProperty); }
set { SetValue(CompletionDateProperty, value); }
}
[Browsable(true)]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Visible)]
public WorkflowContext WFContext { get { return (WorkflowContext)GetValue(WFContextProperty); } set { SetValue(WFContextProperty, value); } }
protected override void Initialize(IServiceProvider provider)
{
TraceIn();
base.Initialize(provider);
TraceOut();
}
protected override void Uninitialize(IServiceProvider provider)
{
TraceIn();
base.Uninitialize(provider);
TraceOut();
}
public override string ToString()
{
TraceIn();
var result = base.ToString();
TraceOut();
return result;
}
public override int GetHashCode()
{
TraceIn();
// ReSharper disable BaseObjectGetHashCodeCallInGetHashCode
var result = base.GetHashCode();
// ReSharper restore BaseObjectGetHashCodeCallInGetHashCode
TraceOut();
return result;
}
public override bool Equals(object obj)
{
TraceIn();
// ReSharper disable BaseObjectEqualsIsObjectEquals
var result = base.Equals(obj);
// ReSharper restore BaseObjectEqualsIsObjectEquals
TraceOut();
return result;
}
//This code causes the compiler to blow up! :)
//protected override void Dispose(bool disposing)
//{
// TraceIn();
// base.Dispose(disposing);
//}
protected override void SetBoundValue(ActivityBind bind, object value)
{
TraceIn();
base.SetBoundValue(bind, value);
TraceOut();
}
protected override void OnWorkflowChangesCompleted(ActivityExecutionContext executionContext)
{
TraceIn();
base.OnWorkflowChangesCompleted(executionContext);
TraceOut();
}
protected override void OnSequenceComplete(ActivityExecutionContext executionContext)
{
TraceIn();
base.OnSequenceComplete(executionContext);
TraceOut();
}
protected override void OnListChanging(ActivityCollectionChangeEventArgs e)
{
TraceIn();
base.OnListChanging(e);
TraceOut();
}
protected override void OnListChanged(ActivityCollectionChangeEventArgs e)
{
TraceIn();
base.OnListChanged(e);
TraceOut();
}
protected override void OnClosed(IServiceProvider provider)
{
TraceIn();
base.OnClosed(provider);
TraceOut();
}
protected override void OnActivityExecutionContextUnload(IServiceProvider provider)
{
TraceIn();
base.OnActivityExecutionContextUnload(provider);
TraceOut();
}
protected override void OnActivityExecutionContextLoad(IServiceProvider provider)
{
TraceIn();
base.OnActivityExecutionContextLoad(provider);
TraceOut();
}
protected override void OnActivityChangeRemove(ActivityExecutionContext executionContext, Activity removedActivity)
{
TraceIn();
base.OnActivityChangeRemove(executionContext, removedActivity);
TraceOut();
}
protected override void OnActivityChangeAdd(ActivityExecutionContext executionContext, Activity addedActivity)
{
TraceIn();
base.OnActivityChangeAdd(executionContext, addedActivity);
TraceOut();
}
protected override ActivityExecutionStatus HandleFault(ActivityExecutionContext executionContext, Exception exception)
{
TraceIn();
var result = base.HandleFault(executionContext, exception);
TraceOut();
return result;
}
protected override object GetBoundValue(ActivityBind bind, Type targetType)
{
TraceIn();
var result = base.GetBoundValue(bind, targetType);
TraceOut();
return result;
}
protected override ActivityExecutionStatus Cancel(ActivityExecutionContext executionContext)
{
TraceIn();
var result = base.Cancel(executionContext);
TraceOut();
return result;
}
protected override void InitializeProperties()
{
TraceIn();
base.InitializeProperties();
TraceOut();
}
protected override ActivityExecutionStatus Execute(ActivityExecutionContext executionContext)
{
TraceIn();
var isSiteAdmin = false;
CreateDate = DateTime.Now;
try
{
// Needs administrative credentials to get the web application properties ino
SPSecurity.RunWithElevatedPrivileges(delegate
{
using (var site = new SPSite(WFContext.Site.ID))
{
using (var web = site.AllWebs[WFContext.Web.ID])
{
isSiteAdmin = web.CurrentUser.IsSiteAdmin;
if (string.IsNullOrEmpty(SourceDirectory)) throw new ArgumentException("SourceDirectory cannot be null or empty");
if (!Directory.Exists(SourceDirectory)) throw new DirectoryNotFoundException("Could not find source directory: \"" + SourceDirectory + "\"");
if (string.IsNullOrEmpty(TargetDirectory)) throw new ArgumentException("TargetDirectory cannot be null or empty");
if (!Directory.Exists(TargetDirectory)) throw new DirectoryNotFoundException("Could not find target directory: \"" + TargetDirectory + "\"");
// Do something
}
}
});
Result = "OK";
}
catch (Exception ex)
{
Result = isSiteAdmin ? ex.ToString() : ex.Message;
}
CompletionDateDate = DateTime.Now;
var result = base.Execute(executionContext);
TraceOut();
return result;
}
private static void TraceIn()
{
Trace("Entering");
}
private static void TraceOut()
{
Trace("Exiting");
}
private static void Trace(string direction)
{
Debugger.Launch();
var stackTrace = new StackTrace(2, false);
var frame = stackTrace.GetFrame(0);
Debug.WriteLine(direction + " " + frame.GetMethod().Name);
}
}
}
借助内置的跟踪，每当我尝试将活动添加到设计器中的工作流时，我都会看到对 GetHashCode() 和 Equals() 的调用，而没有其他任何内容。
这是它的 .actions 文件。
<?xml version="1.0" encoding="utf-8" ?>
<WorkflowInfo>
<Actions
Sequential="then"
Parallel="and">
<Action
Name="IO Activities"
ClassName="SharePoint.Activities.IO"
Assembly="SharePoint.Activities.IO, Version=1.0.0.0, Culture=neutral, PublicKeyToken=abfb622251cf6982"
Category="Custom Actions"
AppliesTo="all">
<RuleDesigner
Sentence="CopyFile %1">
<FieldBind
Field="SourceDirectory,TargetDirectory,Result,CreateDate,CompletionDate"
Text="Copy the files"
DesignerType="CopyFile"
Id="1"/>
</RuleDesigner>
<Parameters>
<Parameter
Name="SourceDirectory"
Type="System.String, mscorlib"
Direction="In"
DesignerType="StringBuilder"
Description="Directory where the source files are to move" />
<Parameter
Name="TargetDirectory"
Type="System.String, mscorlib"
Direction="In"
DesignerType="StringBuilder"
Description="Directory where the files will be placed" />
<Parameter
Name="Result"
Type="System.String, mscorlib"
Direction="Out" />
<Parameter
Name="CreateDate"
Type="System.DateTime, mscorlib"
Direction="Out" />
<Parameter
Name="CompletionDate"
Type="System.DateTime, mscorlib"
Direction="Out" />
<Parameter
Name="WFContext"
Type="Microsoft.SharePoint.WorkflowActions.WorkflowContext, Microsoft.SharePoint.WorkflowActions"
Direction="In"
DesignerType="Hide" />
</Parameters>
</Action>
</Actions>
</WorkflowInfo>