Add project files.

Cache.cs

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+using System;
+using System.Collections.Concurrent;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Text;
+using System.Web.Script.Serialization;
+using System.Threading.Tasks;
+
+
+namespace AnotherReplayReader
+{
+    internal sealed class Cache
+    {
+        public static string CacheDirectory => Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), "RA3Bar.Lanyi.AnotherReplayReader");
+        public static string CacheFilePath => Path.Combine(CacheDirectory, "AnotherReplayReader.cache");
+
+        private ConcurrentDictionary<string, string> _storage;
+
+        public Cache()
+        {
+            try
+            {
+                if (!Directory.Exists(CacheDirectory))
+                {
+                    Directory.CreateDirectory(CacheDirectory);
+                }
+
+                var serializer = new JavaScriptSerializer();
+                _storage = serializer.Deserialize<ConcurrentDictionary<string, string>>(File.ReadAllText(CacheFilePath));
+            }
+            catch
+            {
+                _storage = new ConcurrentDictionary<string, string>();
+            }
+        }
+
+        public T GetOrDefault<T>(string key, in T defaultValue)
+        {
+            try
+            {
+                if (_storage.TryGetValue(key, out var valueString))
+                {
+                    var serializer = new JavaScriptSerializer();
+                    return serializer.Deserialize<T>(valueString);
+                }
+            }
+            catch { }
+            return defaultValue;
+        }
+
+        public void Set<T>(string key, in T value)
+        {
+            try
+            {
+                var serializer = new JavaScriptSerializer();
+                _storage[key] = serializer.Serialize(value);
+                Save();
+            }
+            catch { }
+        }
+
+        public void Remove(string key)
+        {
+            _storage.TryRemove(key, out _);
+            Save();
+        }
+
+        public void Save()
+        {
+            try
+            {
+                var serializer = new JavaScriptSerializer();
+                File.WriteAllText(CacheFilePath, serializer.Serialize(_storage));
+            }
+            catch { }
+        }
+    }
+}