I have some XML that looks similar to this:
<SolutionString>
<Solutions>
<Solution>
<ID>1</ID>
<Property>
<Name>DriverSheave</Name>
<Value>1VP34</Value>
</Property>
<Property>
<Name>DriverBushing</Name>
<Value>
</Value>
</Property>
<Property>
<Name>DrivenSheave</Name>
<Value>AK49</Value>
</Property>
<Property>
<Name>DrivenBushing</Name>
<Value>
</Value>
</Property>
</Solution>
<Solution>
<ID>2</ID>
For every ID number, the example above includes ID 1. I'd like to include all of its child elements into one line of a combobox.
To look similar to this
DriverSheave = 1vp34, Driver Bushing = (nothing)/0, DrivenSheave = AK49,
etc...
I have looked at Getting XML data into combobox, but it only shows how to get single items from XML into combo boxes.
So, for each entry, we have:
A Solution element containing:
An ID element
Some Property elements containing:
A Name element
A Value element (optional)
I would first transform the XML to that structure in memory, and then you can convert it to strings. A LINQ query should make that easy - you could either create classes, or just use anonymous types if this is all you need it for:
var doc = XDocument.Load(file);
var solutions = docs
.Descendants("Solution")
.Select(x => new {
ID = (string) x.Element("ID"),
Properties = x.Elements("Property").Select(p => new {
Name = (string) p.Element("Name"),
Value = (string) p.Element("Value")
}).ToList()
}).ToList();
Then you could use:
var items = solutions
.Select(s => new {
ID = s.ID,
Text = string.Format("{0}. {1}", s.ID,
string.Join(", ", s.Properties
.Select(p => string.Format("{0} = {1}",
p.Name,
p.Value ?? "(nothing/0)"))))
}).ToArray();
comboBox.DisplayMember = "Text";
comboBox.ValueMember = "ID";
comboBox.Items.AddRange(items);
(This is untested, and it may have some bracket mismatches, but should give you the basic idea.)
Related
I have an XML file that looks like this -
<SST_SignageCompConfig>
<Items>
<Item>
<Index>0</Index>
<Type>1</Type>
<Duration>7</Duration>
<Name>Branding-Colours-for-business.jpg</Name>
</Item>
<Item>
<Index>1</Index>
<Type>1</Type>
<Duration>7</Duration>
<Name>Flower of Life Meditation - Copy.png</Name>
</Item>
</Items>
</SST_SignageCompConfig>
I need to count how many Item Elements there are within the Items Element.
ie how many images there are.
I'm using XDocument, so my XML file is loaded like this -
string configurationPath = System.IO.Path.Combine("C:\\SST Software\\DSS\\Compilations\\" + compName + #"\\Comp.cfg");
XDocument filedoc = XDocument.Load(configurationPath);
I've tried numerous variations of the following, with all returning a null object reference exception
foreach (var item in filedoc.Element("SST_SignageCompConfig").Element("Items").Element("Item").Nodes())
{
string name = filedoc.Element("SST_SignageCompConfig").Element("Items").Element("Item").Attribute("Name").ToString();
files.Append(name + "|");
}
I've found countless examples of how to count how many different child elements are within an element, but I need to know how many instances of the same element exist.
Can anyone point me in the right direction?
You can select all names like so:
var names = from item in filedoc.Descendants("Item")
select (string)item.Element("Name");
Or without the query syntax:
var names = filedoc.Descendants("Item").Elements("Name").Select(e => e.Value);
You can get only unique names by:
var uniqueNames = names.Distinct();
You're on the right track. Try finding out exactly which invocation is giving you the NullReferenceException. My guess is that it's the attempt to find:
.Element("SST_SignageCompConfig")
Which is your root. Try the following instead:
// note the difference between .Element and .Elements
var count = filedoc.Root.Element("Items").Elements("Item").Count();
You could also use XPath to help you nail down the navigation within your XDocument:
// returns the current top level element
var element = filedoc.Root.XPathSelectElement(".");
// If the returned element is "SST_SignageCompConfig", then:
var nextElement = filedoc.Root.XPathSelectElement("./Items")
// If the "." element is *not* "SST_SignageCompConfig", then try and locate where in your XML document that node is.
// You can navigate up with .Parent and down with .Element(s)
And so on.
How about:
var nav = fileDoc.CreateNavigator();
XPathNodeIterator navShape = nav.Select("/SST_SignageCompConfig/Items");
navShape.MoveNext()
var count = navShape.Count;
If your xml has only one Items element, this should do the trick:
filedoc.Descendants("Item")
.GroupBy(e => e.Element("Name")!=null? e.Element("Name").Value:String.Empty)
.Select(g => new
{
Name = g.Key,
Count = g.Count()
});
Because "Name" is an element and not an attribute of your xml structure.
can you try replacing this?
string name = filedoc.Element("SST_SignageCompConfig").Element("Items").Element("Item").Element("Name").ToString();
I have an xml file similar to the following:
<doc>
<file>
<header>
<source>
RNG
</source>
</header>
<body>
<item name="items.names.id1">
<property>propertyvalue1</property>
</item>
<!-- etc -->
<item name="items.names.id100">
<property>propertyvalue100</property>
</item>
<!-- etc -->
<item name="otheritems.names.id100">
<property>propertyvalue100</property>
</item>
</body>
</file>
</doc>
And the following class:
private class Item
{
public string Id;
public string Property;
}
The file has, for example, 100 item entries (labeled 1 to 100 in the name attribute). How can I use Linq Xml to get hold of these nodes and place them a in list of item?
Using Selman22's example, I'm doing the following:
var myList = xDoc.Descendants("item")
.Where(x => x.Attributes("name").ToString().StartsWith("items.names.id"))
.Select(item => new Item
{
Id = (string)item.Attribute("name"),
Name = (string)item.Element("property")
}).ToList();
However, the list is empty. What am I missing here?
Using LINQ to XML:
XDocument xDoc = XDocument.Load(filepath);
var myList = xDoc.Descendants("item").Select(item => new Item {
Id = (string)item.Attribute("name"),
Property = (string)item.Element("property")
}).ToList();
You can use LinqToXml to directly query the XML, or deserialize it and use LINQ to object. If you choose to deserialize I suggest to start from the schema and generate the classes representing your datamodel with xsd.exe. If you don't have the schema of your xml, even xsd.exe can infer one from an example xml file, but you probably need to fine tune the result.
Try this one XElement root = XElement.Parse("your file name");
var items textSegs =(from item in root.Descendants("item")
select item).ToList();
Now iterate over list and store it
The below is a way of getting information from xml using Xdocument.
string input = "<Your xml>";
Xdocument doc = XDocument.Parse(input);
var data = doc.Descendants("item");
List<Items> itemsList = new List<Items>();
foreach(var item in data)
{
string itemname= item.Element("item").Value;
string property = item.Element("property").Value;
itemsList.Add(new item(itemname, property));
}
I'm guessing you want the code given how your question is phrased.. also I'm assuming the real XML is very simplistic as well.
var items = from item in doc.Descendants("item")
select new Item()
{
Id = item.Attributes("name").First().Value,
Property = item.Elements().First().Value,
};
Just ensure that your xml is loaded into doc. You can load the xml in two ways:
// By a string with xml
var doc = XDocument.Parse(aStringWithXml);
// or by loading from uri (file)
var doc = XDocuemnt.Load(aStringWhichIsAFile);
I'm trying to read a property in an XML file using C# and LINQ XML and I can't retrieve a value that is deeply nested in the tree. The value I'm trying to get is the contents of <Value> near <DisplayName>Add Your Comments</DisplayName>. Every <OrderProduct id=???> may have its own comments.
I can read other properties in the XML file using LINQ, but I'm confused how to go about reading something so deeply nested.
Thanks.
<?xml version="1.0" encoding="utf-16"?>
<OrderXml>
<Order>
<OrderProducts>
<OrderProduct id="1">
.
.
.
</OrderProduct>
<OrderProduct id="2">
<PropertyValues>
<PropertyValue>
<Property id="10786">
<DisplayName>Base</DisplayName>
</Property>
<Value />
</PropertyValue>
<PropertyValue>
<Property id="10846">
<DisplayName>Add Your Comments</DisplayName>
</Property>
<Value>this is a comment</Value>
</PropertyValue>
</PropertyValues>
</OrderProduct>
</OrderProducts>
</Order>
</OrderXml>
This is the code I have so far. I can retrieve the "Add Your Comments" part, but I'm stuck in how to get the part that follows it.
string productOrderID = "";
string productName = "";
XElement xelement;
xelement = XElement.Load (#"D:\Order.xml");
IEnumerable<XElement> Products = xelement.Descendants ("OrderProduct");
foreach (var order in Products)
{
productOrderID = order.Attribute ("id").Value;
productName = order.Element ("Product").Element ("Name").Value;
Console.WriteLine ("productOrderID: {0}", productOrderID);
Console.WriteLine ("productName: {0}", productName);
Console.WriteLine ("");
IEnumerable<XElement> PropertyValues = xelement.Descendants ("PropertyValues").Elements ("PropertyValue");
foreach (var propValue in PropertyValues.Elements ("Property").Elements ("DisplayName"))
{
Console.WriteLine ("Property ID: {0}", propValue.Value);
if (propValue.Value == "Add Your Comments")
{
Console.WriteLine ("---");
}
}
}
You can use Descendants to search for nodes in document no matter where they are:
string name = "Add Your Comments";
var value = xdoc
.Descendants("PropertyValue")
.Where(pv => (string)pv.Element("Property").Element("DisplayName") == name)
.Select(pv => (string)pv.Element("Value"))
.FirstOrDefault();
Output:
this is a comment
I started learning C# this month and I'm creating a program to parse XML file and get some data. The .xml file is:
<Info>
<Symbols>
<Symbol>
<Name>Name</Name>
<Type>INT</Type>
</Symbol>
<Symbol>
<Name>Name</Name>
<Type>INT</Type>
<Properties>
<Property>
<Name>TAG</Name>
</Property>
</Properties>
</Symbol>
</Symbols>
</Info>
My code below, gets values from elements "Name" and "Type", from "Symbol". But I need to check if the element "Properties" exists in each "Symbol", because, as you can see, there will be some (like the first "Symbol") without the "Properties" element.
If it exists, I will get the value from , in this case: "TAG".
Is there a simple way to make the foreach try to get it only if it exists?!
var symbols = from symbol in RepDoc.Element("Info").Element("Symbols").Descendants("Symbol")
select new
{
VarName = symbol.Element("Name").Value,
VarType = symbol.Element("Type").Value,
};
foreach (var symbol in symbols)
{
Console.WriteLine("" symbol.VarName + "\t" + symbol.VarType);
}
Thank you in advance ^^
var res = XDocument.Load(fname)
.Descendants("Symbol")
.Select(x => new
{
Name = (string)x.Element("Name"),
Type = (string)x.Element("Type"),
Props = x.Descendants("Property")
.Select(p => (string)p.Element("Name"))
.ToList()
})
.ToList();
Props will have zero or more elements depending on the Properties tag.
I have a xml file:
<Result>Ok</Result>
<Error></Error>
<Remark></Remark>
<Data>
<Movies>
<Movie ID='2'>
<Name><![CDATA[TestName]]></Name>
<Duration Duration='170'>2h 50min</Duration>
<Properties>
<Property Name='11'><![CDATA[1111110]]></Property>
</Properties>
<Rental from_date='' to_date=''>
<SessionCount></SessionCount>
<PU_NUMBER></PU_NUMBER>
</Rental>
</Movie>
</Movies>
</Data>
</XML>
Code for pasring xml file:
var results = from element in XDocument.Parse(queryResponse).Descendants("Movie")
select new BaseEvent
{
OID = (int)element.Attribute("ID"),
Subject = (string)element.Element("Name"),
Duration = (int)element.Element("Duration").Attribute("Duration")
};
The problem in that Descedants retruns IEumerable<BaseEvent> but I want that will be BaseEvent. How can I do this?
Just use First(), Last(), Single(), FirstOrDefault() etc.
Personally I'd do that initially, rather than doing it all in a query:
var element = XDocument.Parse(queryResponse)
.Descendants("Movie")
.FirstOrDefault();
if (element == null)
{
// Handle the case of no movies
}
else
{
var baseEvent = new BaseEvent
{
OID = (int) element.Attribute("ID"),
Subject = (string) element.Element("Name"),
Duration = (int) element.Element("Duration")
.Attribute("Duration")
};
// Use baseEvent
}
Add a .First() to get the first element:
from element in XDocument.Parse(queryResponse).Descendants("Movie")
select new BaseEvent
{
OID = (int)element.Attribute("ID"),
Subject = (string)element.Element("Name"),
Duration = (int)element.Element("Duration").Attribute("Duration")
}.First();
You can alternatively use FirstOrDefault() (in case there are no such nodes), Last() or Single().