WF4.0 Combat (19): an example of a silverlight+wcf+wf+linq combination

Overview:

This demo is intended primarily to illustrate how WCF services are used in WF4, and how to invoke WCF services in Silverlight. Because the Silverlight rendering UI is used, and LINQ is used to access the database. So the name of this article is: "An example of silverlight+wcf+wf+linq combination." If you have a little knowledge of WCF like me, you know that WCF can put a lot of methods in a URI for everyone to call. So how do you put multiple WF processes in a URI for you to call? The answer is to use a pick activity, pick activities can have multiple branches, for each branch of pick, you can design a process, this way is very useful. OK, first look at this demo implementation of what function, in said how to achieve, the final summary, with code download.

Effect:

is a Silverlight data display interface that uses the Northwnd database. The left shows all the customers. On the right is your order to select the customer. Below the right is the details of this order. The effect is somewhat similar to a level three cascade.

Realize:

This demo has a total of four projects, as shown below: