.net之工作流工程展示及代码分享（二）工作流引擎

在介绍完表单类的时候，接下来介绍工作流引擎，主要由四个类组成，分别是流程、流程步骤、流程实例、流程步骤实例类。

流程类：

 1     [Serializable]
 2     public class Flow
 3     {
 4         [XmlAttribute]
 5         public Guid FlowId { get; set; }
 6         [XmlAttribute]
 7         public string FlowName { get; set; }
 8         public List<FlowStep> FlowSteps { get; set; }
 9         [XmlAttribute]
10         public string FlowCategory { get; set; }
11         [XmlAttribute]
12         public bool Enabled { get; set; }
13         [XmlAttribute]
14         public DateTime CreateDate { get; set; }
15         public Person Creator { get; set; }
16         
17         public DateTime? CanRequestDateStart { get; set; }
18         
19         public DateTime? CanRequestDateEnd { get; set; }
20 
21         public string CreaterName
22         {
23             get
24             {
25                 if(Creator!=null)
26                 return Creator.PersonName;
27                 return string.Empty;
28             }
29         }
30         [XmlAttribute]
31         public Guid FormId { get; set; }
32         [XmlAttribute]
33         public string FormName { get; set; }
34         public WorkflowConstant.AccessMode AccessMode { get; set; }
35         [XmlAttribute]
36         public short PeriodTime { get; set; }
37         [XmlAttribute]
38         public string RequestRights { get; set; }
39         [XmlAttribute]
40         public string RequestGroup { get; set; }
41         public string AccessModeDesc
42         {
43             get
44             {
45                 switch (RequestRights)
46                 {
47                     case "-不限-":
48                         return "所有人";
49                     default:
50                         return RequestRights+": ";
51                 }
52             }
53         }
54 
55         [XmlAttribute]
56         public string RoleGroups {
57             get
58             {
59                 if (!string.IsNullOrEmpty(RequestGroup))
60                 {
61                     return string.Join("、", RequestGroup.Split(',').Select(g => g.Split('|')[0]));
62                 }
63                 else
64                 {
65                     return string.Empty;
66                 }
67             } 
68         }
69     }

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