vb循环语句问题??请各位高手进来看看这段代码那里错了??
当“字段1”有数据(数字)且“字段2”为空时,则执行循环。
“字段1”中上一条记录减下一条记录,一直到最后一条记录,
得出的结果输出到“字段2”中。
'循环那里好像错了,vb陷入了死循环!
另外结果也不能输出到“字段2”中!
请各位高手把正确代码写出来,万分感谢!
Private Sub Command1_Click()
Dim cn As ADODB.Connection
Dim rs As ADODB.Recordset
Dim sql As String
Set cn = New ADODB.Connection
cn.Open "provider=microsoft.jet.oledb.4.0;data source=E:\成绩\分数.mdb;"
sql = "select * from 分数表"
Set rs = New ADODB.Recordset
rs.Open sql, cn, adOpenForwardOnly, adLockOptimistic
Dim i As Integer
While Not rs.EOF
If not rs.Fields("1") = "" And rs.Fields("2") = "" Then
i = rs.Fields("1") - i
rs.Fields("2") = i
End If
i = rs.Fields("1")
Wend
rs.Update
rs.Close
cn.Close
Set rs = Nothing
Set cn = Nothing
End Sub