主题：文本分割

现有一刷新代码为:

Dim sd As WinForm.DateTimePicker
Dim ed As WinForm.DateTimePicker
sd = e.Form.Controls("DateTimePicker1")
ed = e.Form.Controls("DateTimePicker2")
Dim cpbh As String = e.Form.Controls("项目").Value

Dim filter As String = "1=1"
If sd.Value <> Nothing Then
    filter &= " And 出车日期 >= '" & sd.value & "'"
End If
If ed.Value <> Nothing Then
    filter &= " And 出车日期 <= '" & ed.value & "'"
End If
If cpbh <> "" Then
    filter &= " And [项目] Like '%" & cpbh & "%' "
End If
If ed.value = Nothing AndAlso sd.value = Nothing Then
    filter &= " And 出车日期 = '" & Date.today & "'"
End If
DataTables("配载订单").LoadFilter=filter
DataTables("配载订单").Load
Dim trv As WinForm.TreeView = e.Form.Controls("TreeView1")
trv.BuildTree("配载订单", "车牌|司机|项目")
trv.Nodes.Insert("所有订单",0)

在"项目"文本框中 输入项目(默认一个项目)怎样才能输入多个项目 并且刷新时能识别 类似 包道/麦德龙/三星   能识别是三个项目