Question

我正在使用Windows Workflow Foundation 4.5。

我想将一个参数传递给WriteLine活动。代码如下：

class Program
{
    static void Main(string[] args)
    {
        WriteLine wf1 = new WriteLine();
        wf1.Text = "arg1";

        Dictionary<String, Object> arg = new Dictionary<String, Object>();
        arg.Add("arg1", "Hello,world!");

        WorkflowInvoker.Invoke(wf1, arg);
    }
}

但是我在运行时遇到以下错误：

Unhandled Exception: System.ArgumentException: The values provided for the root activity's arguments
 did not satisfy the root activity's requirements:
'WriteLine': The following keys from the input dictionary do not map to arguments and must be remove
d: arg1.  Please note that argument names are case sensitive.

那么正确的方法是什么？

Answer 1

参数的名称是“Text”。这将有效：

class Program
{
    static void Main(string[] args)
    {
        WriteLine wf1 = new WriteLine();

        Dictionary<String, Object> arg = new Dictionary<String, Object>();
        arg.Add("Text", "Hello,world!");

        WorkflowInvoker.Invoke(wf1, arg);
    }
}

如何将参数传递给代码中的工作流活动？

1 个答案: