主题：[求助]狐哥的货运管理系统问题(已解决)

不知道狐哥货运管理系统
此主题相关图片如下：1.jpg

是如何切换的，望指导！

我所说的在狐哥作品中，怎么也找不到这个窗口界面，所有的窗口我到找过了，找不到，是否隐藏了，还是用其他方法做的。我在点击“建立新单”后，转入该窗口界面，我也仔细分析了此按钮的源程序，由于水平有限，还望大师继续指导！

下面是 “建立新单”按钮的执行程序：

Dim tm As WinForm.DateTimePicker = e.Form.Controls("DateTimePicker2")
Dim cm As WinForm.ComboBox = e.form.Controls("ComboBox8")
Dim tx As WinForm.TextBox = e.Form.Controls("TextBox7")
Dim yw As WinForm.TextBox = e.Form.Controls("TextBox8")

If tx.value Is Nothing Then
    MessageBox.Show("请选择委托公司!", "提示")
    tx.Select()
    Return
End If

If tm.value Is Nothing Then
    MessageBox.Show("请录入截关日期!", "提示")
    tm.Select()
    Return
End If

If cm.value Is Nothing Then
    MessageBox.Show("请录入运输方式!", "提示")
    cm.Select()
    Return
End If

Dim ym As String = format(tm.value,"yyMMdd")
Dim cmd1 As New SQLCommand
Dim cmd2 As New SQLCommand
Dim cmd3 As New SQLCommand
Dim Key As Integer
cmd1.C
cmd2.C
cmd3.C
cmd1.commandText = "Select [编号] From [编号] Where [日期] = #" & tm.value & "#"
Key = cmd1.ExecuteScalar()
cmd2.commandText = "Update [编号] Set [编号] = " & (Key + 1) & " Where [编号] = " & Key & " And [日期] = #" & tm.value & "#"
cmd3.commandText = "Select Count(*) From [编号] Where [日期] = #" & tm.value & "#"

If cmd3.ExecuteScalar = 0 Then
    cmd3.commandtext = "Insert Into 编号 (日期, 编号) Values(#" & tm.value & "#,1)"
    cmd3.ExecuteNonQuery
End If

Do
    If cmd2.ExecuteNonQuery() > 0 Then
        Exit Do
    Else
        Key = cmd1.ExecuteScalar()
        cmd2.commandText = "Update [编号] Set [编号] = " & (Key + 1) & " Where [编号] = " & Key & " And [日期] = #" & tm.value & "#"
    End If
Loop

Dim dr As Row = Tables("业务录入").AddNew()
Dim dv As DataRow = DataTables("员工管理").find("员工姓名 = '" & yw.value & "'")
If dr IsNot Nothing Then
    dr("客户") = tx.value
    dr("日期") = tm.value
    dr("运输方式") = cm.value
    dr("操作") = Vars("用户名")
    dr("业务员") = yw.value

    Dim dgs As DataRow = DataTables("登录").datarows(0)
    If dgs IsNot Nothing Then
        If Vars("运输方式") = "进口" Then
            dr("工作号") = dgs("进口") & ym & Format(Key,"00")
        ElseIf Vars("运输方式") = "空运" Then
            dr("工作号") = dgs("空运") & ym & Format(Key,"00")
        Else
            dr("工作号") = dgs("海运") & ym & Format(Key,"00")
        End If
    End If
End If

tm.value = Nothing
cm.value = Nothing
tx.value = Nothing
yw.value = Nothing

Forms("单证").Controls("TabControl1").SelectedIndex = 1
DataTables("业务录入").save()

谢谢狐哥和狐狸爸爸的指点，学习啦！