[C#/Linq] Linq to Xml 예제

Linq to Xml 결과출력

using System.Xml.Linq;

public class Example
{
    public static void Main()
    {
        Console.Write("Linq to XML 예제 \n");

        var filename = "Order.xml";
        var currentDirectory = Directory.GetCurrentDirectory();
        var OrderFilepath = Path.Combine(currentDirectory, filename);

        XElement Order = XElement.Load(OrderFilepath);

        // Linq 형식
        IEnumerable<string> partNos = from item in Order.Descendants("Item")
                                      select (string)item.Attribute("PartNumber");

        // C# 메서드 구문형식
        //IEnumerable<string> partNos = Order.Descendants("Item").Select(x => (string)x.Attribute("PartNumber"));

        foreach (var item in partNos)
        {
            Console.WriteLine(item);
        }

    }
}

 

> Order.xml

<?xml version="1.0"?>
<Order OrderNumber="99503" OrderDate="2022-08-17">
	<Address Type="Shipping">
		<Name>CodeKiller</Name>
		<Street>street 11</Street>
		<City>killer city</City>
		<State>AA</State>
		<Zip>1111</Zip>
		<Country>Ko</Country>
	</Address>
	<Address Type="Billing">
		<Name>Dumper</Name>
		<Street>street 100</Street>
		<City>dump city</City>
		<State>BB</State>
		<Zip>2222</Zip>
		<Country>Ko</Country>
	</Address>
	<Items>
		<Item PartNumber="11-AA">
			<ProductName>keyboard</ProductName>
			<Quantity>1</Quantity>
			<USPrice>100</USPrice>
			<Comment>test code</Comment>
		</Item>
		<Item PartNumber="22-AA">
			<ProductName>computer</ProductName>
			<Quantity>1</Quantity>
			<USPrice>1000</USPrice>
			<ShipDate>2022-08-17</ShipDate>
		</Item>
	</Items>
</Order>