Store Filter between pages

FoodsharingSiegen.Server/Pages/ProspectsVerify.razor.cs

@@ -1,8 +1,8 @@
+using FoodsharingSiegen.Contracts;
 using FoodsharingSiegen.Contracts.Entity;
 using FoodsharingSiegen.Contracts.Enums;
 using FoodsharingSiegen.Contracts.Model;
 using FoodsharingSiegen.Server.Data.Service;
-using FoodsharingSiegen.Server.Dialogs;
 using Microsoft.AspNetCore.Components;
 
 namespace FoodsharingSiegen.Server.Pages
@@ -44,12 +44,31 @@ namespace FoodsharingSiegen.Server.Pages
         /// <inheritdoc />
         protected override async Task InitializeDataAsync()
         {
+            // Load Filter
+            var filter = await LocalStorageService.GetItem<ProspectFilter>(StorageKeys.ProspectFilter);
+            if (filter != null) Filter = filter;
+
             // Load prospects
             await LoadProspects();
         }
 
         #endregion
 
+        #region Private Method FilterChangedAsync
+
+        /// <summary>
+        ///     Updates the current filter with the specified ProspectFilter object.
+        /// </summary>
+        /// <param name="arg">The ProspectFilter object containing the updated filter criteria.</param>
+        /// <returns>A task that represents the asynchronous operation.</returns>
+        private async Task FilterChangedAsync(ProspectFilter arg)
+        {
+            Filter = arg;
+            await LocalStorageService.SetItem(StorageKeys.ProspectFilter, Filter);
+        }
+
+        #endregion
+
         #region Private Method LoadProspects
 
         /// <summary>