[英]C# populate combobox with XML data based on another combobox
Total noob when it comes to XML here, I've got an XML file with the structure as follows: 在这里涉及XML的时候,我已经有了一个XML文件,其结构如下:
<Error_Codes>
<Test_1>
<Code>ABC</Code>
<Description>Item #1</Description>
</Test_1>
<Test_1>
<Code>DEF</Code>
<Description>Item #2</Description>
</Test_1>
<Test_2>
<Code>UVW</Code>
<Description>Item #3</Description>
</Test_2>
<Test_2>
<Code>XYZ</Code>
<Description>Item #4</Description>
</Test_2>
What I want to do is have the user select either Test 1 or Test 2 from a previous ComboBox, then populate the 2nd ComboBox (let's call it codeCBO) with the values in the <Test 1>
portion of the XML file, ideally with each item in codeCBO structured like Code-Description
. 我想要做的是让用户从先前的ComboBox中选择Test 1或Test 2,然后使用XML文件的
<Test 1>
部分中的值填充第二个ComboBox(我们称其为codeCBO),最好是每个类似于Code-Description
codeCBO中的项目。 I looked online and see there are a lot of XML tutorials, but I don't see anything like what I'm trying to do. 我在网上看了看,看到有很多XML教程,但是看不到我要尝试的东西。 Any help/advice would be much appreciated.
任何帮助/建议将不胜感激。
For some reason the Error_codes end tag does not show up here, but it is in the XML file I'm working with 由于某种原因,Error_codes结束标记未在此处显示,但在我正在使用的XML文件中
After messing with this for 3 days, I finally found the solution that worked for me. 经过三天的摸索,我终于找到了适合我的解决方案。 XML file now looks like this:
XML文件现在看起来像这样:
<Error_Codes>
<Test1 code="0001" description="test ABC"/>
<Test1 code="0002" description="test DEF"/>
<Test2 code="9999" description="test UVW"/>
<Test2 code="8888" description="test XYZ"/>
</Error_Codes>
Then, my C# code looks like this: 然后,我的C#代码如下所示:
private void stationCBO_SelectedIndexChanged(object sender, EventArgs e)
{
codeCBO.Items.Clear();
LoadXML(stationCBO.Text);
}
private void LoadXML(string station)
{
XmlReader reader = XmlReader.Create("Failure_Modes.xml");
while (reader.Read())
{
if ((reader.NodeType == XmlNodeType.Element) && (reader.Name == station))
{
if (reader.HasAttributes)
{
string text = reader.GetAttribute("code") + "-" + reader.GetAttribute("description");
codeCBO.Items.Add(text);
}
}
}
}
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