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CSharp · Console

/Program.cs

using System;
using System.Xml;
					
public class Program
{
	public static void Main()
	{
		var xml = @"<Block ID=""Ar0010100"" BOX=""185 211 825 278"" ELEMENT_TYPE=""h1"" SEQ_NO=""0"" />";
		var doc = new XmlDocument();
		doc.LoadXml(xml);
		XmlNodeList idList = doc.SelectNodes("/Block/@ID");
		foreach(XmlNode id in idList)
		{
			Console.WriteLine(id.Value);
		}
	}
}