主题：这是怎么回事啊？

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我只是在TextChanged里写了以下代码：

Dim txt As String = e.Form.Controls("fa piao查询").Text
Dim tbl As Table = Tables("fa piao明细")
If txt = "" Then
    tbl.Filter = ""
Else
    txt = "'%" & txt & "%'"
    tbl.Filter = "fa piao号码 Like " & txt & " Or 开piao日期 Like " & txt & " Or 价税合计 Like "& txt & " Or 销方税号 Like " & txt & "  Or 认证时间 Like " & txt & " Or 销方名称 Like " & txt
End If