你好请遇到linq到实体的问题。我正在研究学校管理系统。我可以从数据库中生成每个学生的记录和学生的分数，并将其绑定到gridview控件。以下是我用于生成学生成绩的代码
Dim subjectSearch = From subSearch In DemoSchool.EssenceSubjectRegistrations Where subSearch.Session = drpSession.SelectedItem.Text _
AndAlso subSearch.Term = drpTerm.SelectedItem.Text AndAlso subSearch.RealClass.ClassSN = findClassSN.FirstOrDefault AndAlso _
subSearch.SubjectCode = drpSubject.SelectedValue _
Select New With {.SubjectRegSN = subSearch.SubjectRegSN,
.FirstName = subSearch.Student.FirstName,
.Surname = subSearch.Student.Surname,
.CA1 = subSearch.CA1,
.CA2 = subSearch.CA2,
.CA3 = subSearch.CA3,
.CA4 = subSearch.CA4,
.CA5 = subSearch.CA5,
.CA6 = subSearch.CA6,
.CA7 = subSearch.CA7,
.CA8 = subSearch.CA8,
.CA9 = subSearch.CA9,
.CA10 = subSearch.CA10,
.Exam = subSearch.Exam}
执行此操作后，我会对结果执行此查询，以通过执行此操作来计算某些虚拟列的结果
Dim secSubjectSearch = (From jamie In subjectSearch Select jamie).ToList() _
.Select(Function(jamie) New With {.SubjectRegSN = jamie.SubjectRegSN,
.FirstName = jamie.FirstName,
.Surname = jamie.Surname,
.CA1 = jamie.CA1,
.CA2 = jamie.CA2,
.CA3 = jamie.CA3,
.CA4 = jamie.CA4,
.CA5 = jamie.CA5,
.MidTerm = CDbl(jamie.CA1 + jamie.CA2 + jamie.CA3 + jamie.CA4 + jamie.CA5) / 5,
.CA6 = jamie.CA6,
.CA7 = jamie.CA7,
.CA8 = jamie.CA8,
.CA9 = jamie.CA9,
.CA10 = jamie.CA10,
.Total = CDbl(jamie.CA1 + jamie.CA2 + jamie.CA3 + jamie.CA4 + _
jamie.CA5 + jamie.CA6 + jamie.CA7 + jamie.CA8 + jamie.CA9 + jamie.CA10),
.Exam = jamie.Exam})
这个结果与正确显示的网格视图有关。我的问题是每个学生每个科目有三个记录（科目分数一年三次记录为第一学期第二学期和第三学期），这些记录显示为每个学生三个单独的行。我想要一种情况，我可以将每个学生记录只放在一行，这样每个学生在gridview中只有一行，而不是三行。 从过去的五天开始，我真的需要资深专业人士的帮助。一如既往地感谢您的帮助。