add xmltest solution

this is temporary.

xmltest/.vscode/launch.json

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+{
+    // Use IntelliSense to learn about possible attributes.
+    // Hover to view descriptions of existing attributes.
+    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "name": ".NET Core Launch (console)",
+            "type": "coreclr",
+            "request": "launch",
+            "preLaunchTask": "build",
+            "program": "${workspaceFolder}/bin/Debug/netcoreapp3.1/xmltest.dll",
+            "args": [],
+            "cwd": "${workspaceFolder}",
+            "console": "internalConsole",
+            "stopAtEntry": false
+        },
+        {
+            "name": ".NET Core Attach",
+            "type": "coreclr",
+            "request": "attach",
+            "processId": "${command:pickProcess}"
+        }
+    ]
+}

xmltest/.vscode/tasks.json

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+{
+    "version": "2.0.0",
+    "tasks": [
+        {
+            "label": "build",
+            "command": "dotnet",
+            "type": "process",
+            "args": [
+                "build",
+                "${workspaceFolder}/xmltest.csproj",
+                "/property:GenerateFullPaths=true",
+                "/consoleloggerparameters:NoSummary"
+            ],
+            "problemMatcher": "$msCompile"
+        },
+        {
+            "label": "publish",
+            "command": "dotnet",
+            "type": "process",
+            "args": [
+                "publish",
+                "${workspaceFolder}/xmltest.csproj",
+                "/property:GenerateFullPaths=true",
+                "/consoleloggerparameters:NoSummary"
+            ],
+            "problemMatcher": "$msCompile"
+        },
+        {
+            "label": "watch",
+            "command": "dotnet",
+            "type": "process",
+            "args": [
+                "watch",
+                "run",
+                "${workspaceFolder}/xmltest.csproj",
+                "/property:GenerateFullPaths=true",
+                "/consoleloggerparameters:NoSummary"
+            ],
+            "problemMatcher": "$msCompile"
+        }
+    ]
+}

xmltest/Program.cs

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+using System;
+using System.IO;
+using System.Xml;
+using System.Xml.Linq;
+using System.Net;
+using System.Linq;
+
+
+namespace xmltest
+{
+    class Program
+    {
+        static void Main(string[] args)
+        {
+            string xmlcontent = null;
+
+            using (var wc = new WebClient())
+            {
+                xmlcontent = wc.DownloadString("https://www.nvidia.com/Download/API/lookupValueSearch.aspx?TypeID=3");
+            }
+            var xDoc = XDocument.Parse(xmlcontent);
+
+            var names = xDoc.Descendants("Name");
+            foreach (var name in names)
+            {
+                string sname = name.Value.ToString();
+                if (sname == "GeForce RTX 2080") 
+                {
+                    string value = name.Parent.Value;
+                    int index = value.IndexOf(sname);
+                    string cleanValue = (index < 0)
+                        ? value
+                        : value.Remove(index, sname.Length);
+
+                    Console.WriteLine(cleanValue);
+                }
+            }
+        }
+    }
+}

xmltest/xmltest.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>netcoreapp3.1</TargetFramework>
+  </PropertyGroup>
+
+</Project>