perf(MultiSelect): reduce one rendering and improve performance (#2811)

* perf: 更新 MultiSelect 组件减少一次计算

* chore: bump version 8.1.7-beta05

Author: ArgoZhang

src/BootstrapBlazor/BootstrapBlazor.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk.Razor">
 
   <PropertyGroup>
-    <Version>8.1.7-beta04</Version>
+    <Version>8.1.7-beta05</Version>
   </PropertyGroup>
 
   <ItemGroup Condition="'$(TargetFramework)' == 'net5.0'">

src/BootstrapBlazor/Components/Select/MultiSelect.razor

@@ -43,9 +43,9 @@
             <div class="toolbar">
                 @if (ShowDefaultButtons)
                 {
-                    <button class="btn" type="button" @onclick="@SelectAll">@SelectAllText</button>
-                    <button class="btn" type="button" @onclick="@InvertSelect">@ReverseSelectText</button>
-                    <button class="btn" type="button" @onclick="@Clear">@ClearText</button>
+                    <DynamicElement TagName="button" type="button" class="btn" OnClick="SelectAll">@SelectAllText</DynamicElement>
+                    <DynamicElement TagName="button" type="button" class="btn" OnClick="InvertSelect">@ReverseSelectText</DynamicElement>
+                    <DynamicElement TagName="button" type="button" class="btn" OnClick="Clear">@ClearText</DynamicElement>
                 }
                 @ButtonTemplate
             </div>

src/BootstrapBlazor/Components/Select/MultiSelect.razor.cs

@@ -211,7 +211,6 @@ public async Task ToggleRow(string val)
 
             // 更新选中值
             await SetValue();
-            StateHasChanged();
         }
     }
 
@@ -282,6 +281,11 @@ private async Task SetValue()
         }
 
         PreviousValue = CurrentValueAsString;
+
+        if (!ValueChanged.HasDelegate)
+        {
+            StateHasChanged();
+        }
     }
 
     private async Task Clear()