不能使用Linq访问特定的XML文件块

I am trying to get a specific block of a XML, I am using function load to take all my XML file and it works fine. When I am debugging i can see all the file. The problem is about when I am trying to get a specific value of xml.

我正在尝试获得一个特定的XML块，我正在使用函数load来获取我所有的XML文件，它工作得很好。当我调试时，我可以看到所有的文件。问题是当我试图获取xml的特定值时。

I am using XElement of LINQ library. So, here is an example of my xml file:

我正在使用LINQ库的XElement。下面是我的xml文件示例:

-<Mission xmlns:z="http:..." xmlns:i="http:..." xmlns="http:..." z:Id="1">
    +<ActiveBullsEye z:Id="2" i:type="BullsEye">
    -<ActiveFlightPlan z:Id="7" i:type="FlightPlan">
        <AIRTAC z:Id="8"/>
        <Active>false</Active>
       -<Aircraft z:Id="9" i:type="a:Tanker" xmlns:a="http:...">
       -<ACColor xmlns:b="http:...">
             <b:A>255</b:A>
             <b:B>169</b:B>
             <b:G>169</b:G>
             <b:R>169</b:R>
             <b:ScA>1</b:ScA>
             <b:ScB>0.396755248</b:ScB>
             <b:ScG>0.396755248</b:ScG>
             <b:ScR>0.396755248</b:ScR>

I need to access block (ACColor) and then do a for statement to get all of these values. But I am trying something like this and not function for me:

我需要访问block (ACColor)，然后执行一个for语句来获取所有这些值。但我正在尝试这样的东西，而不是为我自己:

XElement xdocument = XElement.load(filepath) //This works
XElement missionBlock = xdocument.Element("Mission") //(ERROR) This not get Mission tag

foreach( XElement acColor in missionBlock.Elements("ACColor") ) { // (ERROR) Not found ACColor
    ...
}

Could you help me to access to all values of ACColor node?

你能帮我访问ACColor节点的所有值吗?

3 个解决方案

#1

XElement xDocument = XElement.load(filepath);  // This works
var ns = xDocument.GetDefaultNamespace();

      in missionBlock
            .Elements(ns + "ActiveBullsEye")

and to get at for instance the value of z:Id :

比如得到z:Id的值:

var z = xml.GetNamespaceOfPrefix("z");
var id = (string)xElement.Attribute(z + "Id");

Do not use var when you create a namespace from a string:

当您从字符串创建名称空间时，不要使用var:

var ns1 = "http://something";         // ns1 is a string
XNamespace ns2 = "http://something";  // ns2 is a namespace

And you really need a namespace z for z + "Id" to work.

你真的需要一个命名空间z来表示z +“Id”的工作。

#2

Try this:

试试这个:

class Program
{
    static void Main(string[] args)
    {
        var xdocument = XDocument.Load(@"c:\temp\sta01\test.xml");
        var xmlns = "http:...";
        var missionBlock = xdocument.Root;
        foreach (
            var acColor 
            in missionBlock
                .Elements(XName.Get("ActiveBullsEye", xmlns))
                .Elements(XName.Get("ActiveFlightPlan", xmlns))
                .Elements(XName.Get("Aircraft", xmlns))
                .Elements(XName.Get("ACColor", xmlns)))
        {
            var channel = acColor.Element(XName.Get("A", xmlns));
            Console.WriteLine($"A: {channel.Value}");
        }
        Console.ReadLine();
    }
}

It works with this doc:

它与这个医生合作:

<Mission xmlns:z="http:..." xmlns:i="http:..." xmlns="http:..." z:Id="1">
    <ActiveBullsEye z:Id="2" i:type="BullsEye">
        <ActiveFlightPlan z:Id="7" i:type="FlightPlan">
            <AIRTAC z:Id="8"/>
            <Active>false</Active>
            <Aircraft z:Id="9" i:type="a:Tanker" xmlns:a="http:...">
                <ACColor xmlns:b="http:...">
                    <b:A>255</b:A>
                    <b:B>169</b:B>
                    <b:G>169</b:G>
                    <b:R>169</b:R>
                    <b:ScA>1</b:ScA>
                    <b:ScB>0.396755248</b:ScB>
                    <b:ScG>0.396755248</b:ScG>
                    <b:ScR>0.396755248</b:ScR>
                </ACColor>
            </Aircraft>
        </ActiveFlightPlan>
    </ActiveBullsEye>
</Mission>

#3

Use a dictionary like code below :

使用字典类似代码如下:

            XDocument doc = XDocument.Load(FILENAME);
            XElement color = doc.Descendants().Where(x => x.Name.LocalName == "ACColor").FirstOrDefault();

            Dictionary<string, string> dict = color.Elements().GroupBy(x => x.Name.LocalName, y => (string)y)
                .ToDictionary(x => x.Key, y => y.FirstOrDefault());

#1

XElement xDocument = XElement.load(filepath);  // This works
var ns = xDocument.GetDefaultNamespace();

      in missionBlock
            .Elements(ns + "ActiveBullsEye")