Asp.net应用程序的工作流出现错误.

本文介绍了Asp.net应用程序的工作流出现错误.的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

WorkflowInstance实例= workflowRuntime.CreateWorkflow(type);

遇到错误

堆栈跟踪

WorkflowInstance instance = workflowRuntime.CreateWorkflow(type);

getting an error

Stack trace

[ArgumentException: The input workflow type must be an Activity.
Parameter name: workflowType]
   System.Workflow.Runtime.WorkflowRuntime.CreateWorkflow(Type workflowType) +1327127
   WorkflowTest._Default.WFInvoke_Click(Object sender, EventArgs e) in F:\WCF\WFLibrary\GuessNumberGameInSequence\WorkflowTest\Default.aspx.cs:50
   System.Web.UI.WebControls.Button.OnClick(EventArgs e) +118
   System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument) +112
   System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +10
   System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +13
   System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +36
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +5563

推荐答案

WorkflowInstance instance = workflowRuntime.CreateWorkflow(OBJECT_HERE_OF_ACTIVITY_TYPE); //

我想您只是从这里复制了代码: MSDN:WorkflowInstance [ ^ ]，但您需要先定义类型".这里的示例是此处示例的一部分: MSDN:取消工作示例 [ ^ ]

I guess you simply copied code from here: MSDN: WorkflowInstance[^], but you need to first define ''type''. Example here was part of sample present here: MSDN: Cancelling Work sample[^]

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