C#获取EF实体对象或自定义属性类的字段名称和值

 1             //判断字段是否修改(原值、旧值做比较)，student为前台传入的数据对象
 2             var oldModel = this.db.Students.Where(p => p.ID == student.ID).FirstOrDefault();
 3             if (oldModel == null)
 4             {
 5                 return "返回数据为空！";
 6             }
 7 
 8             //获取当前对象的属性数组
 9             PropertyInfo[] currentPro = student.GetType().GetProperties();
10             //获取原始对象的属性数组
11             PropertyInfo[] oldPro = oldModel.GetType().GetProperties();
12             foreach (PropertyInfo old in oldPro)
13             {
14                 foreach (PropertyInfo curtrent in currentPro.
15                     Where(p => !string.IsNullOrEmpty(p.Name))
16                 {
17                     //获取当前数据
18                     object currentColumnValue = curtrent.GetValue(student, null);
19                     //获取原始数据
20                     object oldColumnValue = old.GetValue(oldModel, null);
21 
22                     //判断值是否相等
23                     if (currentColumnValue.ToString() != oldColumnValue.ToString())
24                     {
25                         //保存新值/旧值到数据库
26                         SaveStudentLog(oldModel.ID, oldColumnValue.ToString(), currentColumnValue.ToString(), old.Name);
27                         break;
28                     }
29                 }
30             }

 1  private void SaveStudentLog(int id, string oldValue, string currentValue, string column)
 2         {
 3             StudentLog studentLog = new StudentLog();
 4             var student = this.db.Students.Where(p => p.ID == id).FirstOrDefault();
 5             if (student == null)
 6             {
 7                 return;
 8             }
 9 
10             studentLog.Student = student;
11             studentLog.ValueOfOld = oldValue.Trim();
12             studentLog.ValueOfNew = currentValue.Trim();
13             studentLog.FieldName = column;
14             studentLog.FieldDesc = "1223";
15             studentLog.UserAccount = "123";
16             studentLog.UserRoleName = "34";
17             studentLog.UserTrueName = "123";
18             studentLog.UpdateDesc = "123";
19             studentLog.UpdateTime = DateTime.Now;
20             studentLog.UpdateTimeTag = DateTime.Now.Hour.ToString() +
21                                        DateTime.Now.Minute.ToString() +
22                                        DateTime.Now.Second.ToString() +
23                                        DateTime.Now.Millisecond.ToString();
24             this.db.StudentLogs.AddObject(studentLog);
25             this.db.SaveChanges();
26         }