我有一个XML文件，但两个组合框我想填充第二个取决于第一个

Question

我有两个组合框在我的应用程序。第一个组合框可以获得所有需要的数据（在这种情况下，它是工厂编号），但是取决于选择哪个工厂，我希望下一个组合框（在这种情况下是行号）自动填充该工厂的正确行。 这里是我的XML文件 - 或测试数据

<?xml version="1.0" encoding="utf-8"?> 
<Profiles> 
<Factories> 
    <Factory>F1</Factory> 

    <Factory>F2</Factory> 

    <Factory>F3</Factory> 

    <Factory>F4</Factory> 

    <Factory>F5</Factory> 
    <Factory>F6</Factory> 
    <Factory>F7</Factory> 
    <Factory>F8</Factory> 
</Factories> 

    <Lines> 
    <F1>G1</F1> 
    <F1>G2</F1> 
    <F1>G3</F1> 
    </Lines> 
</Profiles> 

这是我到目前为止有：

Private Sub populateComboBoxes() 
    Dim doc As New XmlDocument() 
    doc.Load("C:\TFS2010Source\ShopFloorApps\Main\Source\Components\000280LinePCBackup\000280LinePCBackup\Lines.XML") 

    Dim factoryList As XmlNodeList = doc.SelectNodes("/Profiles/Factories/Factory") 
    For Each Factory As XmlNode In factoryList 
     factoryComboBox.Items.Add(Factory.InnerText) 
    Next 



End Sub 

Private Sub factoryComboBox_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles factoryComboBox.SelectedIndexChanged 
    Dim doc As New XmlDocument() 
    doc.Load("C:\TFS2010Source\ShopFloorApps\Main\Source\Components\000280LinePCBackup\000280LinePCBackup\Lines.XML") 


    Dim lineList As XmlNodeList = doc.SelectNodes("/Profiles/Lines") 

    For Each line As XmlNode In lineList 


     If factoryComboBox.SelectedItem.ToString = line.FirstChild.Name Then 


      lineComboBox.Items.Add(line.FirstChild.InnerText) 


     End If 
     Next 
End Sub 

所以，我想要的是当我选择F1其他组合框与线G1填充，G2和G3。

感谢

Answer 1

你要清楚的lineComboBox的项目集合，改变它的SelecteNodes路径。

lineComboBox.Items.Clear() 
Dim lineList As XmlNodeList = doc.SelectNodes("/Profiles/Lines/" & factoryComboBox.SelectedItem.ToString) 
For Each line As XmlNode In lineList 
    lineComboBox.Items.Add(line.FirstChild.InnerText) 
Next