public VolunteerResult EditVolunteer(Volunteer a, Volunteer b)
{
if (a == null || a.StudentNum == 0)
{
return(VolunteerResult.Error(VolunteerResult.EditVolunteerErrorEnum.NonExistingVolunteer));
}
var v = database.Volunteers.SingleOrDefault(o => o.StudentNum == a.StudentNum);
v.StudentNum = b.StudentNum;
v.Name = b.Name;
v.Class = b.Class;
v.Mobile = b.Mobile;
v.Room = b.Room;
v.Email = b.Email;
Save();
v = database.Volunteers.SingleOrDefault(o => o.StudentNum == a.StudentNum);
Volunteer target = v;
Volunteer edited = v;
//Volunteer edited = FindVolunteer(b.StudentNum);
if (edited.Mobile != target.Mobile || edited.Email != target.Email || edited.Room != target.Room)//日志字符串改成“修改联系方式”，现在联系方式：手机 电子邮件 寝室
{
bool logresult = VolunteerOperationSucceeded(string.Format("修改原学号:{0},姓名:{1}的志愿者基本信息.现学号:{2},姓名:{3}", target.StudentNum, target.Name, edited.StudentNum, edited.Name), target, LogType.EditContact, true);
}
else
{
bool logresult = VolunteerOperationSucceeded(string.Format("修改原学号:{0},姓名:{1}的志愿者基本信息.现学号:{2},姓名:{3}", target.StudentNum, target.Name, edited.StudentNum, edited.Name), target, LogType.EditVolunteer, true);
}
return(VolunteerResult.Success());
}