专家坐堂-高手帮忙排下错，谢谢Foxtable(狐表) - 新一代数据库软件，完美融合Access、Foxpro、Excel、vb.net之优势，人人都能掌握的快速软件开发工具!

以文本方式查看主题

-  Foxtable(狐表)  (http://foxtable.net/bbs/index.asp)
--  专家坐堂  (http://foxtable.net/bbs/list.asp?boardid=2)
----  高手帮忙排下错，谢谢  (http://foxtable.net/bbs/dispbbs.asp?boardid=2&id=19272)

--  作者：cxqxjyzg
--  发布时间：2012/5/4 10:59:00
--  高手帮忙排下错，谢谢

下面的代码，我的目的是：从一个文本文件读入我需要的数据加载到WeatherData表里面，在加数据的时候先判断某日数据是否存在，如果存在，则替换相应数据，如果不存在，说明这个日期（这个日期不允许重复）没有数据，新增一行，再加载数据。

现在能加数据了，问题是如果多次加入数据会多出空行来，这个空行是那里产生的，请帮忙排查下，我看了N遍也找不到原因，谢谢！！

Dim dlg As New OpenFileDialog \'定义一个新的OpenFileDialog
dlg.InitialDirectory ="E:\\A0File\\"
dlg.Filter= "所有文件|*.*" \'设置筛选器
If dlg.ShowDialog = DialogResult.Ok Then
Dim S As String = FileSys.ReadAllText(dlg.FileName)
Dim mmID As String =s.SubString(0,5)
output.show (mmID)
Dim mmDate As Date
Dim dr As DataRow
Dim mmYM As String =s.SubString(28,4) & "-" & s.SubString(33,2) & "-"
Dim ss As String
ss=s.Remove(0,s.LastIndexOf("T0")+3)
ss=ss.Remove(ss.IndexOf("="))
Dim s2() As String =ss.Split(chr(13))
OutPut.show(s2.Length)
For i As Integer =0 To s2.Length-1
    \'OutPut.show(i & "=" &s2(i))
    Dim s3() As String =s2(i).Split(" ")
    mmDate =Cdate(mmYM & (i+1))
    \'output.show(mmDate)
    Dim rr As String = "mID = \'" & mmID & "\' And mDate = " & "#" & mmDate & "#"
    \'output.show(rr)
    dr = DataTables("WeatherData").Find(rr)
    If dr IsNot Nothing Then
        Dim r As Integer
        r = Tables("WeatherData").FindRow(rr, 0, True )
        If r >= 0 Then \'如果找到的话
            Tables("WeatherData").Position = r \'定位到找到的行.
        End If

        \'output.show("找到:" & Tables("WeatherData").Position)
        Tables("WeatherData").Current("mT02")=s3(0)
        Tables("WeatherData").Current("mT08")=s3(1)
        Tables("WeatherData").Current("mT14")=s3(2)
        Tables("WeatherData").Current("mT20")=s3(3)
        Tables("WeatherData").Current("mGt")=s3(4)
        Tables("WeatherData").Current("mDt")=s3(5)

    Else
        DataTables("WeatherData").AddNew()
        Tables("WeatherData").Position=Tables("WeatherData").Position+1
        Tables("WeatherData").Current("mID")=mmID
        Tables("WeatherData").Current("mDate")=mmDate
        Tables("WeatherData").Current("mT02")=s3(0)
        Tables("WeatherData").Current("mT08")=s3(1)
        Tables("WeatherData").Current("mT14")=s3(2)
        Tables("WeatherData").Current("mT20")=s3(3)
        Tables("WeatherData").Current("mGt")=s3(4)
        Tables("WeatherData").Current("mDt")=s3(5)

    End If
Next
    Else
    MessageBox.Show("你未选择任何文件" ,"提示") \'提示用户选择的文件
End If

--  作者：狐狸爸爸
--  发布时间：2012/5/4 13:02:00
--
Dim dlg As New OpenFileDialog \'定义一个新的OpenFileDialog
dlg.InitialDirectory ="E:\\A0File\\"
dlg.Filter= "所有文件|*.*" \'设置筛选器
If dlg.ShowDialog = DialogResult.Ok Then
    Dim S As String = FileSys.ReadAllText(dlg.FileName)
    Dim mmID As String =s.SubString(0,5)
    output.show (mmID)
    Dim mmDate As Date
    Dim dr As DataRow
    Dim mmYM As String =s.SubString(28,4) & "-" & s.SubString(33,2) & "-"
    Dim ss As String
    ss=s.Remove(0,s.LastIndexOf("T0")+3)
    ss=ss.Remove(ss.IndexOf("="))
    Dim s2() As String =ss.Split(chr(13))
    OutPut.show(s2.Length)
    For i As Integer =0 To s2.Length-1
        Dim s3() As String =s2(i).Split(" ")
        If s3(0) > "" AndAlso s3(1) > "" AndAlso s3(2) > "" Then
            mmDate =Cdate(mmYM & (i+1))
            Dim rr As String = "mID = \'" & mmID & "\' And mDate = " & "#" & mmDate & "#"
            dr = DataTables("WeatherData").Find(rr)
            If dr IsNot Nothing Then
                Dim r As Integer
                r = Tables("WeatherData").FindRow(rr, 0, True )
                If r >= 0 Then \'如果找到的话
                    Tables("WeatherData").Position = r \'定位到找到的行.
                End If
                Tables("WeatherData").Current("mT02")=s3(0)
                Tables("WeatherData").Current("mT08")=s3(1)
                Tables("WeatherData").Current("mT14")=s3(2)
                Tables("WeatherData").Current("mT20")=s3(3)
                Tables("WeatherData").Current("mGt")=s3(4)
                Tables("WeatherData").Current("mDt")=s3(5)
            Else
                DataTables("WeatherData").AddNew()
                Tables("WeatherData").Position=Tables("WeatherData").Position+1
                Tables("WeatherData").Current("mID")=mmID
                Tables("WeatherData").Current("mDate")=mmDate
                Tables("WeatherData").Current("mT02")=s3(0)
                Tables("WeatherData").Current("mT08")=s3(1)
                Tables("WeatherData").Current("mT14")=s3(2)
                Tables("WeatherData").Current("mT20")=s3(3)
                Tables("WeatherData").Current("mGt")=s3(4)
                Tables("WeatherData").Current("mDt")=s3(5)
            End If
        End If
    Next
Else
    MessageBox.Show("你未选择任何文件" ,"提示") \'提示用户选择的文件
End If