Hi I have just started to work with WF 4.0 and following things are really irritating :- a.) No State Machine workflow :( . I have already developed and deployed a WF 3.0 based application using State Machine workflow model.It was so easy to represent any business process with State Machine model.But with WF 4.0 its missing and what we have in turn in Flow Chart model.Well that might help if we have to draw a Library book lending application but certainly not a very good choice if you have some real big business process. b.) VB expression ................ I have always programmed in C# and its the default language for VS 2010 Beta 2.I have never programmed in VB.I find it really difficult and even more irritating to write those VB expressions in WF.Writing VB expression in C# development environment.Whats the point ? I struggled so much to get expressions write even for simple statments like Console.WriteLine() , using KeyValuePair syntax with dictionary etc. And above all , the editor just throws a generic error "Expression doesnt produce a value". I know WF 4.0 is a complete revamp from previous version but I was not prepared for such kind of surprises.Lets see how many more surprises are still waiting for me in WF 4.0.
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