DoubleClick中代码

Dim cmd As New SQLCommand
Dim exp As String  = "(编辑者 Is Null Or 编辑者 = \'" & _UserName & "\') And [_Identify] = " & e.Row("_Identify")
cmd.CommandText = "Update {打办登记表} Set 编辑者 = \'" & _UserName & "\' Where " & exp
If cmd.ExecuteNonQuery = 1 Then
    Forms("窗口一").Open()
Else
    cmd.CommandText = "Select 编辑者 From {打办登记表} Where [_Identify] = " & e.Row("_Identify")
    Dim nm As String = cmd.ExecuteScalar
    If nm > "" Then
        MessageBox.show(nm & "正在编辑此行!","提示",MessageBoxButtons.OK,MessageBoxIcon.Information)
    Else
        cmd.CommandText = "Select Count(*) From {打办登记表} Where [_Identify] = " & e.Row("_Identify")
        If cmd.ExecuteScalar =0 Then
            MessageBox.show("此行已被他人删除!","提示",MessageBoxButtons.OK,MessageBoxIcon.Information)
        End If
    End If
End If

表名是打办登记表没错，但怎么说数据库找不到这个表呢？

如果确定你的表名和代码没错，那么看看：

http://www.foxtable.com/help/topics/2344.htm