主题：求助优化一段代码

If bname = "产品报价"
    Dim ids As String
    Dim dt As DataTable
    Dim cmd As New SQLCommand
    cmd.C
    cmd.CommandText ="select * from {产品报价主表}"
    dt = cmd.ExecuteReader
    For Each dr As DataRow In dt.DataRows
        ids = ids & ",'" & dr("OPN") &"'"
    Next
    ids= ids.Trim(",")
    Tables("产品报价选择_产品列表").DataTable.fill("Select * From {未报价物料查询} where 料号 not In (" & ids & ")","ERP",True)
    Dim i As Integer =Tables("产品报价选择_产品列表").DataTable.DataRows.Count
    With Tables("产品报价选择_产品列表").DataTable
        .LoadFilter = "料号 not In (" & ids & ")"
        .LoadTop = 15
        .LoadPage = 0
        .Load()
        e.Form.Controls("页码信息").Text= "共[" & .TotalPages & "] 页 ,当前为第[" & .LoadPage + 1 & "]页,共[" & i & "]行数据"
    End With
    With Tables("产品报价选择_产品列表")
        .MergeMode = MergeModeEnum.Free
        .MergeCols.Clear()
        .MergeCols.Add("品牌")
        .MergeCols.Add("供应商")
        .MergeCols.Add("品名")
        .MergeCols.Add("规格")
        .MergeCols.Add("料号")
        .MergeCols.Add("均价")
        .MergeSort = "品牌,供应商,品名"
        .AllowMerge = True
        .Cols("品牌").TextAlign = TextAlignEnum.Center
        .Cols("MOQ").TextAlign = TextAlignEnum.Center
        .Cols("供应商").TextAlign = TextAlignEnum.Center
        .Cols("单价").TextAlign = TextAlignEnum.Center
        .Cols("未税单价").TextAlign = TextAlignEnum.Center
        .Cols("均价").TextAlign = TextAlignEnum.Center
        .Cols("税率").TextAlign = TextAlignEnum.Center
        .DataTable.SysStyles("EmptyArea").BackColor = color.white
        .DataTable.DataCols("单价").SetFormat("##0.#####")
        .DataTable.DataCols("均价").SetFormat("##0.#####")
        .DataTable.DataCols("未税单价").SetFormat("##0.#####")
        .DataTable.DataCols("MOQ").SetFormat("#,####,###")
        .SetColVisibleWidth("品牌|80|供应商|90|未税单价|60|单价|60|均价|60|品名|120|规格|200|料号|190|MOQ|60|含税|40|税率|40")
    End With
End If
卡得疯掉了，窗口的afterload事件，大概会卡3秒左右，求高手帮忙看看能不能优化的？

SQL2000和2005的数据库测试都有这个问题，PING 服务器无丢包现象，PING值少于1MS