UCMA 通用 QuestionAnswer 活动
Posted
技术标签:
【中文标题】UCMA 通用 QuestionAnswer 活动【英文标题】:UCMA Generic QuestionAnswer activity 【发布时间】:2013-02-20 22:41:52 【问题描述】:我正在开发一个 UCMA 3.0 工作流应用程序,并试图在我们的客户管理系统中生成查询,从而允许最终用户通过语音或即时消息获取有关特定客户的数据。我想知道是否有人知道如何使用允许通用输入的 UCMA 创建通用问答活动。我知道我可以设置预期的输入和语法,但是使用双大写选项,以及最终用户知道确切的客户名称(或客户编号)的可能性,我更愿意允许用户输入姓名的一部分,然后在数据库中搜索可能符合条件的姓名列表。有谁知道一种方法,并且有示例代码可以让我这样做吗?
【问题讨论】:
【参考方案1】:我遇到了同样的问题,不得不编写一个自定义活动来捕获用户的通用输入。这需要一些工作才能使其生产就绪。注意 system.exception 在多个地方的经典捕获,以及如果在超时期限内未收到输入而不是重新提示用户则抛出异常。用户输入也没有正则表达式...
InstanceDependencyProperty 是另一个让 Workflow 感到沮丧的东西。如果不使用 InstanceDependencyProperties,您将无法在活动完成后检索任何结果。
希望这会有所帮助!
using System;
using System.ComponentModel;
using System.ComponentModel.Design;
using System.Collections;
using System.Collections.Generic;
using System.Drawing;
using System.Linq;
using System.Threading;
using System.Workflow.Activities;
using System.Workflow.Activities.Rules;
using System.Workflow.ComponentModel;
using System.Workflow.ComponentModel.Design;
using System.Workflow.ComponentModel.Compiler;
using System.Workflow.ComponentModel.Serialization;
using System.Workflow.Runtime;
using Microsoft.Rtc.Collaboration;
using Microsoft.Rtc.Workflow.Activities;
using Microsoft.Rtc.Workflow.Common;
namespace ActivityLibrary
public partial class CaptureIMInput : Activity, IInstanceDependencyContainer
#region Private member variables
private CallProvider _callProvider;
private Timer _maximumTimer;
private string _imText;
private bool messageReceived = false;
private bool _maximumTimerElapsed = false;
#endregion
public CaptureIMInput()
InitializeComponent();
_instanceDependencyProperties = new Dictionary<string, object>();
protected override ActivityExecutionStatus Execute(ActivityExecutionContext executionContext)
try
this._callProvider = Utilities.GetCallProviderFromParent<InstantMessagingCall>(this);
InstantMessagingCall call = (InstantMessagingCall)this._callProvider.Call;
try
if (call.State == CallState.Established)
call.Flow.EndSendInstantMessage(call.Flow.BeginSendInstantMessage(MainPrompt, null, null));
_maximumTimer = new Timer(new TimerCallback(OnMaximumTimerFired), null, MaximumPrompt, new TimeSpan(0, 0, 0, 0, -1));
call.Flow.MessageReceived += this.InstantMessagingFlow_MessageReceived;
while (!messageReceived)
if (_maximumTimerElapsed)
throw new TimeoutException("User input was not detected within alloted time");
if (!string.IsNullOrEmpty(_imText))
IMText = _imText;
this.Stop();
return ActivityExecutionStatus.Closed;
catch (Exception ex)
throw ex;
catch (Exception ex)
throw ex;
return ActivityExecutionStatus.Closed;
protected override ActivityExecutionStatus Cancel(ActivityExecutionContext executionContext)
this.Stop(); //Clean up timer
return ActivityExecutionStatus.Canceling;
private void Stop()
if (_maximumTimer != null)
_maximumTimer.Dispose();
_maximumTimer = null;
private void InstantMessagingFlow_MessageReceived(object sender, InstantMessageReceivedEventArgs e)
//Can't set dependencyproperties directly from sub-thread
_imText = e.TextBody;
//Mark bool so main while loop exits
messageReceived = true;
//Callback to
private void OnMaximumTimerFired(object state)
_maximumTimerElapsed = true;
#region InstanceDependency dictionary
private Dictionary<string, object> _instanceDependencyProperties;
[Browsable(false)]
public Dictionary<string, object> InstanceDependencyProperties
get return _instanceDependencyProperties;
#endregion
#region Maximum Prompt Timeout
[NonSerialized]
private static readonly InstanceDependencyProperty MaximumPromptProperty = InstanceDependencyProperty.Register("MaximumPrompt", typeof(TimeSpan), typeof(CaptureIMInput), new TimeSpan(0, 0, 30));
[TypeConverter(typeof(TimeSpanConverter))]
public TimeSpan MaximumPrompt
get
if (base.DesignMode)
return (TimeSpan)InstanceDependencyHelper.GetValue<CaptureIMInput>(this, MaximumPromptProperty);
else
return (TimeSpan)InstanceDependencyHelper.GetValue<CaptureIMInput>(this, this.WorkflowInstanceId, MaximumPromptProperty);
set
if (base.DesignMode)
InstanceDependencyHelper.SetValue<CaptureIMInput>(this, MaximumPromptProperty, value);
else
InstanceDependencyHelper.SetValue<CaptureIMInput>(this, this.WorkflowInstanceId, MaximumPromptProperty, value);
#endregion
#region MainPrompt
public static DependencyProperty MainPromptProperty =
DependencyProperty.Register("MainPrompt", typeof(string), typeof(CaptureIMInput));
[ValidationOption(ValidationOption.Required)]
public string MainPrompt
get
return (string)base.GetValue(MainPromptProperty);
set
base.SetValue(MainPromptProperty, value);
#endregion
#region Instant Message Text
public static InstanceDependencyProperty IMTextProperty =
InstanceDependencyProperty.Register("IMText",
typeof(string),
typeof(CaptureIMInput));
[Description("InstantMessaging Text from user")]
[Browsable(true)]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Visible)]
public string IMText
get
if (base.DesignMode) return ((string)InstanceDependencyHelper.GetValue<CaptureIMInput>(this, CaptureIMInput.IMTextProperty));
else return ((string)(InstanceDependencyHelper.GetValue<CaptureIMInput>(this, this.WorkflowInstanceId, CaptureIMInput.IMTextProperty)));
set
if (base.DesignMode) InstanceDependencyHelper.SetValue<CaptureIMInput>(this, CaptureIMInput.IMTextProperty, value);
else InstanceDependencyHelper.SetValue<CaptureIMInput>(this, this.WorkflowInstanceId, CaptureIMInput.IMTextProperty, value);
#endregion
【讨论】:
以上是关于UCMA 通用 QuestionAnswer 活动的主要内容,如果未能解决你的问题,请参考以下文章