Fix C# 14 breaking change - add explicit string casts for JsonSerializer.Deserialize calls

src/Business/Grand.Business.Common/Services/Configuration/SettingService.cs

@@ -129,7 +129,7 @@ public virtual async Task<T> GetSettingByKey<T>(string key, T defaultValue = def
 
             var setting = settings.FirstOrDefault(x => x.StoreId == storeId) ??
                           settings.FirstOrDefault(x => string.IsNullOrEmpty(x.StoreId));
-            return setting != null ? Task.FromResult(JsonSerializer.Deserialize<T>(setting.Metadata)) : Task.FromResult(defaultValue);
+            return setting != null ? Task.FromResult(JsonSerializer.Deserialize<T>((string)setting.Metadata)) : Task.FromResult(defaultValue);
         });
     }
 
@@ -205,7 +205,7 @@ public virtual ISettings LoadSetting(Type type, string storeId = "")
                 setting = settings.FirstOrDefault(x => string.IsNullOrEmpty(x.StoreId));
 
             if (setting != null)
-                return JsonSerializer.Deserialize(setting.Metadata, type) as ISettings;
+                return JsonSerializer.Deserialize((string)setting.Metadata, type) as ISettings;
 
             return Activator.CreateInstance(type) as ISettings;
         });

src/Business/Grand.Business.Common/Utilities/PowerExcelMapper.cs

@@ -294,7 +294,7 @@ private object GetCellValue(ICell cell, ColumnInfo targetColumn)
             case CellType.String:
             default:
                 if (targetColumn.Json)
-                    return JsonSerializer.Deserialize(cell.StringCellValue, targetColumn.PropertyType);
+                    return JsonSerializer.Deserialize((string)cell.StringCellValue, targetColumn.PropertyType);
                 return cell.StringCellValue;
         }
     }

src/Core/Grand.Infrastructure/ModelBinding/JsonBodyModelBinder.cs

@@ -31,7 +31,7 @@ public async Task BindModelAsync(ModelBindingContext bindingContext)
             };
             options.Converters.Add(new StringConverter());
             bindingContext.Result =
-                ModelBindingResult.Success(JsonSerializer.Deserialize(jsonPayload, bindingContext.ModelType, options));
+                ModelBindingResult.Success(JsonSerializer.Deserialize((string)jsonPayload, bindingContext.ModelType, options));
         }
         else
         {

src/Web/Grand.Web.Common/Extensions/SessionExtensions.cs

@@ -30,6 +30,6 @@ public static void Set<T>(this ISession session, string key, T value)
     public static T Get<T>(this ISession session, string key)
     {
         var value = session.GetString(key);
-        return value == null ? default : JsonSerializer.Deserialize<T>(value);
+        return value == null ? default : JsonSerializer.Deserialize<T>((string)value);
     }
 }