Vb.net 如何获得数据库访问的总数或总和

我有一段代码，它将数据库过滤并显示到datagridview

前

得分|总分
25    | 30
20    | 40
25    | 25

现在，我怎样才能得到测验的总数和“scoretotal”的总数，或者我应该说，怎样才能得到只有datagridview显示的内容的总数

Private Sub datagrid()
    Dim conn As New OleDbConnection
    Dim cmd As New OleDbCommand
    Dim da As New OleDbDataAdapter
    Dim dt As New DataTable
    Dim sSQL As String = String.Empty
    Try
        conn = New OleDbConnection(Get_Constring)
        conn.Open()
        cmd.Connection = conn
        cmd.CommandType = CommandType.Text
        sSQL = "SELECT  score as score, total as total FROM prelimquiz"
        sSQL = sSQL & " where username like '%" & Administrator.lblusername.Text & "%' and studentid like '%" & Me.Label25.Text & "%'"
        cmd.CommandText = sSQL
        da.SelectCommand = cmd
        da.Fill(dt)
        Me.DataGridView1.DataSource = dt
        If dt.Rows.Count = 0 Then
        End If
    Catch ex As Exception
        MsgBox(ErrorToString)
    Finally
        conn.Close()
    End Try
End Sub

linq将非常感谢您的任何建议和建议

：

 Dim dtAsEnum = dt.AsEnumerable
 Dim ScoreResult = dtAsEnum.Sum(Function(row) row.Field(Of Integer)("score"))
 Dim TotalResult = dtAsEnum.Sum(Function(row) row.Field(Of Integer)("total"))

---

为什么将乘法分数作为分数，将总数作为总数？我将如何将其显示到textbox1和textbox2？textbox1.Text=分数结果和textbox2.Text=TotalResult@lomed我想你的意思是

textbox1.Text=scoresult.ToString（）

等等。