Fixes issues with duplication of keys (when adding bookmarks).

Enables functionality of remove button.

Author: Declan Taylor

source/Demos/CachedPathSuggestBoxDemo/Infrastructure/CachedPathInformationSuggest.cs

@@ -29,7 +29,7 @@ public void Insert(string path)
 
 		internal void Delete(string text)
 		{
-			throw new NotImplementedException();
+            LiteRepository.Instance.Remove(text);
 		}
 
 		/// <summary>

source/Demos/CachedPathSuggestBoxDemo/Infrastructure/LiteRepository.cs

@@ -7,72 +7,87 @@
 
 namespace CachedPathSuggestBoxDemo.Infrastructure
 {
-	/// <summary>
-	/// Implements a static service provider for searching and editing a LiteDB file.
-	/// </summary>
-	public sealed class LiteRepository
-	{
-		#region fields
-		private const string DbPath = @"..\..\..\Data\KeyValue.litedb";
+    /// <summary>
+    /// Implements a static service provider for searching and editing a LiteDB file.
+    /// </summary>
+    public sealed class LiteRepository
+    {
+        #region fields
+        private const string DbPath = @"..\..\..\Data\KeyValue.litedb";
 
-		// Collection needs a name because object, keyvaluepair<string,string> is generic.
-		private const string CollectionName = "collection";
-		#endregion fields
+        // Collection needs a name because object, keyvaluepair<string,string> is generic.
+        private const string CollectionName = "collection";
+        #endregion fields
 
-		#region ctors
-		/// <summary>
-		/// Explicit static constructor to tell C# compiler
-		/// not to mark type as beforefieldinit
-		/// </summary>
-		static LiteRepository()
-		{
-		}
+        #region ctors
+        /// <summary>
+        /// Explicit static constructor to tell C# compiler
+        /// not to mark type as beforefieldinit
+        /// </summary>
+        static LiteRepository()
+        {
+        }
 
-		/// <summary>
-		/// Class constructor
-		/// </summary>
-		private LiteRepository()
-		{
-			Directory.GetParent(DbPath).Create();
+        /// <summary>
+        /// Class constructor
+        /// </summary>
+        private LiteRepository()
+        {
+            Directory.GetParent(DbPath).Create();
 
-			// Id needed to ensure Upsert works.
-			BsonMapper.Global.Entity<KeyValuePair<string, string>>().Id(x => x.Value);
-		}
-		#endregion ctors
+            // Id needed to ensure Upsert works.
+            BsonMapper.Global.Entity<KeyValuePair<string, DateTime>>().Id(x => x.Key);
+        }
+        #endregion ctors
 
-		/// <summary>
-		/// Gets the repository instance from this static instance.
-		/// </summary>
-		public static LiteRepository Instance { get; } = new LiteRepository();
+        /// <summary>
+        /// Gets the repository instance from this static instance.
+        /// </summary>
+        public static LiteRepository Instance { get; } = new LiteRepository();
 
-		/// <summary>
-		/// Inserts a new string into the collection of bookmarked strings.
-		/// </summary>
-		/// <param name="k"></param>
-		/// <param name="collectionName"></param>
-		public void Insert(string k, string? collectionName = null)
-		{
-			using var db = new LiteDatabase(DbPath);
-			var col = db.GetCollection<KeyValuePair<string, DateTime>>(collectionName ?? CollectionName);
+        /// <summary>
+        /// Inserts a new string into the collection of bookmarked strings.
+        /// </summary>
+        /// <param name="k"></param>
+        /// <param name="collectionName"></param>
+        public void Insert(string k, string? collectionName = null)
+        {
+            using var db = new LiteDatabase(DbPath);
+            var col = db.GetCollection<KeyValuePair<string, DateTime>>(collectionName ?? CollectionName);
 
-			// Make sure string is not already present
-			col.Upsert(new KeyValuePair<string, DateTime>(k, DateTime.Now));
-		}
+            // Make sure string is not already present
+            col.Upsert(new KeyValuePair<string, DateTime>(k, DateTime.Now));
+        }
 
-		/// <summary>
-		/// Filters the collection of bookmark strings by the given string and
-		/// returns the resulting collection.
-		/// </summary>
-		/// <param name="key"></param>
-		/// <param name="collectionName"></param>
-		/// <returns></returns>
-		public IEnumerable<KeyValuePair<string, DateTime>> Filter(string key, string? collectionName = null)
-		{
-			using var db = new LiteDatabase(DbPath);
-			var col = db.GetCollection<KeyValuePair<string, DateTime>>(collectionName ?? CollectionName);
-			return string.IsNullOrWhiteSpace(key) ?
-				col.Query().ToArray() :
-				col.Find(Query.Contains(nameof(KeyValuePair<string, DateTime>.Key), key)).ToArray();
-		}
-	}
+        /// <summary>
+        /// Inserts a new string into the collection of bookmarked strings.
+        /// </summary>
+        /// <param name="k"></param>
+        /// <param name="collectionName"></param>
+        public void Remove(string key, string? collectionName = null)
+        {
+            using var db = new LiteDatabase(DbPath);
+            var col = db.GetCollection<KeyValuePair<string, DateTime>>(collectionName ?? CollectionName);
+
+            // Make sure string is not already present
+            if (col.Exists(Query.Contains(nameof(KeyValuePair<string, DateTime>.Key), key)) == false)
+                col.Delete(key);
+        }
+
+        /// <summary>
+        /// Filters the collection of bookmark strings by the given string and
+        /// returns the resulting collection.
+        /// </summary>
+        /// <param name="key"></param>
+        /// <param name="collectionName"></param>
+        /// <returns></returns>
+        public IEnumerable<KeyValuePair<string, DateTime>> Filter(string key, string? collectionName = null)
+        {
+            using var db = new LiteDatabase(DbPath);
+            var col = db.GetCollection<KeyValuePair<string, DateTime>>(collectionName ?? CollectionName);
+            return string.IsNullOrWhiteSpace(key) ?
+                col.Query().ToArray() :
+                col.Find(Query.Contains(nameof(KeyValuePair<string, DateTime>.Key), key)).ToArray();
+        }
+    }
 }