我有这个代码过滤并显示数据库到datagridview
前任。
score | scoretotal
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,如何得到只有 datagridview 显示的总数?
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
任何意见和建议将不胜感激