如何使用VB.NET从数据库中计算记录？

I have the code below:

我有以下代码:

 Dim ds As New DataSet
 Dim sda As System.Data.SqlClient.SqlDataAdapter
 Dim sSQL As String
 Dim strCon As String

 sSQL = " .... MY QUERY HERE .... "

 strCon = appBase.dbConnString

 sda = New System.Data.SqlClient.SqlDataAdapter(sSQL, strCon)
 sda.Fill(ds, "MY TABLE FROM DB")


 dgRecordsContent.DataSource = ds.Tables("MY TABLE FROM DB")
 dgRecordsContent.DataBind()

 dgRecordsContent.Visible = True

 dbConn.Close()
 Dim ds As