refactor(AutoComplete): improved the TriggerChange/TriggerFilter method to update CurrentValue (#5531)

* Update AutoComplete.razor.cs

fixes the same problem I was having in issue #5110

* chore: bump version 9.4.7-beta01

* doc: update comment to english

---------

Co-authored-by: Argo Zhang <argo@live.ca>

Author: celadaris

src/BootstrapBlazor/BootstrapBlazor.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk.Razor">
 
   <PropertyGroup>
-    <Version>9.4.6</Version>
+    <Version>9.4.7-beta01</Version>
   </PropertyGroup>
 
   <ItemGroup>

src/BootstrapBlazor/Components/AutoComplete/AutoComplete.razor.cs

@@ -8,82 +8,82 @@
 namespace BootstrapBlazor.Components;
 
 /// <summary>
-/// AutoComplete 组件
+/// AutoComplete component
 /// </summary>
 public partial class AutoComplete
 {
     /// <summary>
-    /// 获得 组件样式
+    /// Gets the component style
     /// </summary>
     private string? ClassString => CssBuilder.Default("auto-complete")
         .AddClassFromAttributes(AdditionalAttributes)
         .Build();
 
     /// <summary>
-    /// 获得/设置 通过输入字符串获得匹配数据集合
+    /// Gets or sets the collection of matching data obtained by inputting a string
     /// </summary>
     [Parameter]
     [NotNull]
     public IEnumerable<string>? Items { get; set; }
 
     /// <summary>
-    /// 获得/设置 自定义集合过滤规则 默认 null
+    /// Gets or sets custom collection filtering rules, default is null
     /// </summary>
     [Parameter]
     public Func<string, Task<IEnumerable<string>>>? OnCustomFilter { get; set; }
 
     /// <summary>
-    /// 获得/设置 图标
+    /// Gets or sets the icon
     /// </summary>
     [Parameter]
     public string? Icon { get; set; }
 
     /// <summary>
-    /// 获得/设置 加载图标
+    /// Gets or sets the loading icon
     /// </summary>
     [Parameter]
     public string? LoadingIcon { get; set; }
 
     /// <summary>
-    /// 获得/设置 匹配数据时显示的数量
+    /// Gets or sets the number of items to display when matching data
     /// </summary>
     [Parameter]
     [NotNull]
     public int? DisplayCount { get; set; }
 
     /// <summary>
-    /// 获得/设置 是否开启模糊查询，默认为 false
+    /// Gets or sets whether to enable fuzzy search, default is false
     /// </summary>
     [Parameter]
     public bool IsLikeMatch { get; set; }
 
     /// <summary>
-    /// 获得/设置 匹配时是否忽略大小写，默认为 true
+    /// Gets or sets whether to ignore case when matching, default is true
     /// </summary>
     [Parameter]
     public bool IgnoreCase { get; set; } = true;
 
     /// <summary>
-    /// 获得/设置 获得焦点时是否展开下拉候选菜单 默认 true
+    /// Gets or sets whether to expand the dropdown candidate menu when focused, default is true
     /// </summary>
     [Parameter]
     public bool ShowDropdownListOnFocus { get; set; } = true;
 
     /// <summary>
-    /// 获得/设置 是否显示无匹配数据选项 默认 true 显示
+    /// Gets or sets whether to show the no matching data option, default is true
     /// </summary>
     [Parameter]
     public bool ShowNoDataTip { get; set; } = true;
 
     /// <summary>
-    /// IStringLocalizer 服务实例
+    /// IStringLocalizer service instance
     /// </summary>
     [Inject]
     [NotNull]
     private IStringLocalizer<AutoComplete>? Localizer { get; set; }
 
     /// <summary>
-    /// 获得 获得焦点自动显示下拉框设置字符串
+    /// Gets the string setting for automatically displaying the dropdown when focused
     /// </summary>
     private string? ShowDropdownListOnFocusString => ShowDropdownListOnFocus ? "true" : null;
 
@@ -115,7 +115,7 @@ protected override void OnParametersSet()
     }
 
     /// <summary>
-    /// 鼠标点击候选项时回调此方法
+    /// Callback method when a candidate item is clicked
     /// </summary>
     private async Task OnClickItem(string val)
     {
@@ -129,12 +129,15 @@ private async Task OnClickItem(string val)
     private List<string> Rows => _filterItems ?? [.. Items];
 
     /// <summary>
-    /// TriggerFilter 方法
+    /// TriggerFilter method
     /// </summary>
     /// <param name="val"></param>
     [JSInvokable]
     public override async Task TriggerFilter(string val)
     {
+        // Store the current input value to prevent it from being overwritten
+        var currentInputValue = val;
+
         if (OnCustomFilter != null)
         {
             var items = await OnCustomFilter(val);
@@ -157,20 +160,33 @@ public override async Task TriggerFilter(string val)
         {
             _filterItems = [.. _filterItems.Take(DisplayCount.Value)];
         }
-        await TriggerChange(val);
+
+        // Use currentInputValue here instead of potentially stale val
+        CurrentValue = currentInputValue;
+
+        // Only trigger StateHasChanged if no binding is present
+        if (!ValueChanged.HasDelegate)
+        {
+            StateHasChanged();
+        }
     }
 
     /// <summary>
-    /// TriggerChange 方法
+    /// TriggerChange method
     /// </summary>
     /// <param name="val"></param>
     [JSInvokable]
     public override Task TriggerChange(string val)
     {
-        CurrentValue = val;
-        if (!ValueChanged.HasDelegate)
+        // Only update CurrentValue if the value has actually changed
+        // This prevents overwriting the user's input
+        if (CurrentValue != val)
         {
-            StateHasChanged();
+            CurrentValue = val;
+            if (!ValueChanged.HasDelegate)
+            {
+                StateHasChanged();
+            }
         }
         return Task.CompletedTask;
     }