Unable to access all child elements from XML after parsing

Question

1.00/5 (1 vote)

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Hi,

I'm able to parse xml using xDocument but it returns only the first element of multiple child elements.
My xml looks like below. so I'm getting only first physical and exposure value for a particular strategy even though it has five values.

XML

<stratergies>
    <strtergy>
        <name>...</name>
        <physicals>..
        	<physical>...</physical>
        	<exposure>...</exposure>
		<physical>...</physical>
        	<exposure>...</exposure>
		<physical>...</physical>
        	<exposure>...</exposure>
        </physicals>
    </strtergy>
<strtergy>
        <name>...</name>
        <physicals>..
        	<physical>...</physical>
        	<exposure>...</exposure>
		<physical>...</physical>
        	<exposure>...</exposure>
        </physicals>
    </strtergy>
<strtergy>
        <name>...</name>
        <physicals>..
        	<physical>...</physical>
        	<exposure>...</exposure>
        </physicals>
    </strtergy>
</stratergies>

What I have tried:

solution 1>
XDocument xDoc = XDocument.Parse(strxml);
var strategylist = (from i in xDoc.Root.Elements(sch + "strategy")
let r = i.Element(sch + "physicals")
select new
{
StrategyName = (string)i.Element(sch + "name"),
Physical = r.Descendants(sch + "physical"),
Exposure = r.Descendants(sch + "exposure")
}).ToList();

2>

var strategylist = from i in xDoc.Descendants(sch + "strategy")
select new
{
StrategyName = i.Element(sch + "name") != null ? i.Element(sch + "name").Value : "",
Physical = i.Element(sch + "physicals") != null ? (i.Element(sch + "physicals").Element(sch + "physical") != null ? i.Element(sch + "physicals").Element(sch + "physical").Value : "") : "",
Exposure = i.Element(sch + "physicals") != null ? (i.Element(sch + "physicals").Element(sch + "exposure") != null ? Double.Parse(i.Element(sch + "physicals").Element(sch + "exposure").Value) : 0) : 0,
};

Posted 2-Jun-16 22:45pm

shwetakeshri

Updated 3-Jun-16 17:17pm

v2

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2 solutions

Solution 2

var strategylist = (from i in xDoc.Root.Elements("strategy")
let r = i.Elements("physicals")
select new
{
StrategyName = i.Element("name") != null ? i.Element(sch + "name").Value:"",
Physical = r.Elements("physicals").Elements("physical").Elements("physical").ToList(),
Exposure = r.Elements("physicals").Elements( "exposure").ToList()
}).ToList();

dgStrategy.DataSource = strategylist;
dgStrategy.DataBind();
proxy.Close();

Posted 3-Jun-16 17:17pm

shwetakeshri

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George Jonsson · Accepted Answer · 2016-06-03T01:18:00

Try this code. It is a slight modification of your posted code.
Corrections:
1. You didn't use the misspelled element in your query. strategy should be strtergy
(This is why it is a bad idea to let misspelled variables and names slip through)
2. The code

C#

r.Descendants(sch + "exposure")

will give you the whole node, not the content of the node.
Use
C#

r.Element("physical").Value
instead.
3. I have no idea what sch is supposed to mean, so I removed it. Works much better.

[UPDATE] Changed to use let r = i.Elements("physicals") instead of Element.

C#

XDocument xDoc = XDocument.Parse(strxml);
var strategylist = (from i in xDoc.Root.Elements("strtergy")
                    let r = i.Elements("physicals")
                    select new
                    {
                        StrategyName = i.Element("name").Value,
                        Physical = r.Elements("physical").ToList(),
                        Exposure = r.Elements("exposure").ToList()
                    }).ToList();

[UPDATE2] Get multiple results as a comma separated list

C#

XDocument xDoc = XDocument.Parse(strxml);
var strategylist = 
    (from i in xDoc.Root.Elements("strtergy")
    let r = i.Elements("physicals")
    select new
    {
        StrategyName = i.Element("name").Value,
        Physical = string.Join(",", r.Elements("physical").Select(x => x.Value)),
        Exposure = string.Join(",", r.Elements("exposure").Select(x => x.Value))
    }).ToList();

var physical1 = strategylist[0].Physical;
Will contain: "...,...,..."