Workflow Foundation 编译错误 - 帮助！
我正在开发 WCF 工作流服务应用程序，我只有一个接收活动，该活动从客户端应用程序获取输入，然后将输入传递到远程 Web 服务，计算结果，并将结果返回到客户端站点。
我正在尝试设置远程 Web 服务的结果，但出现以下错误：
处理表达式时遇到编译错误：Option Strict On 不允许 从 Object 到 Double 的隐式转换。
我理解这是什么意思，并且我尝试了一些解决方法。例如，我已将对象设置为字符串，并尝试将其解析为双精度，但得到了相同的结果。
这是我正在寻找的，以提供更好的想法。您可以看到屏幕底部的变量是我尝试将结果设置为的变量。
你可以看到红色错误圈在哪里，就是我的编译错误所在。
I am working on a WCF Workflow Service Application, and I simply have a Receive activity that is taking input from a client application, then passing the input to a remote web service,calculating a result, and returning the result to the client site.
I am attempting to setup the result for the remote web service, but it is giving me the following error:
Compilation error(s) encountered while processing expression:Option Strict On disallows
implicit conversion from Object to Double.
I understand what this is saying, and I have tried a couple work arounds. For example, I have set the Object to string, and attempted to parse it to double, but got the same result.
Here is what I am looking at to give a better idea. You can see the variables on the bottom of the screen are what I am attempting to set the result to.
You can see where the red error circle is, is where my compilation error is.
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要解决此问题，variable1 需要是 Double，或者您需要在CalculateMonthlyPaymentResult 赋值中进行显式转换。我投票支持前者，因为它更正确。如果您需要返回双精度值，那么这就是工作流应该使用的数据类型，而不是变量当前定义的对象。
To fix this, variable1 needs to be a Double, or you need to put an explicit cast in the CalculateMonthlyPaymentResult assignment. I vote for the former as it is more correct. If you need to return a double, then that is the data type that the workflow should be working with rather than Object which the variable is current defined as.