feat: 增加 OnKeyUpAsync 参数

Author: ArgoZhang

src/BootstrapBlazor/Components/Textarea/Textarea.razor

@@ -6,4 +6,7 @@
 {
     <BootstrapLabel required="@Required" for="@Id" ShowLabelTooltip="ShowLabelTooltip" Value="@DisplayText" />
 }
-<textarea @attributes="AdditionalAttributes" placeholder="@PlaceHolder" id="@Id" class="@ClassName" disabled="@Disabled" @bind-value="@CurrentValueAsString" @bind-value:event="@EventString" @onblur="OnBlur" data-bb-scroll="@AutoScrollString" @ref="FocusElement"></textarea>
+<textarea @attributes="AdditionalAttributes" placeholder="@PlaceHolder" id="@Id" class="@ClassName" disabled="@Disabled"
+          @bind-value="@CurrentValueAsString" @bind-value:event="@EventString"
+          @onkeyup="OnKeyUp"
+          @onblur="OnBlur" data-bb-scroll="@AutoScrollString" @ref="FocusElement"></textarea>

src/BootstrapBlazor/Components/Textarea/Textarea.razor.cs

@@ -3,6 +3,8 @@
 // See the LICENSE file in the project root for more information.
 // Maintainer: Argo Zhang([email protected]) Website: https://www.blazor.zone
 
+using Microsoft.AspNetCore.Components.Web;
+
 namespace BootstrapBlazor.Components;
 
 /// <summary>
@@ -34,6 +36,12 @@ public partial class Textarea
     [Parameter]
     public bool IsAutoScroll { get; set; }
 
+    /// <summary>
+    /// 获得/设置 文本框按键回调委托方法 默认为 null
+    /// </summary>
+    [Parameter]
+    public Func<KeyboardEventArgs, Task>? OnKeyUpAsync { get; set; }
+
     /// <summary>
     /// 获得 客户端是否自动滚屏标识
     /// </summary>
@@ -53,4 +61,20 @@ protected override async Task OnAfterRenderAsync(bool firstRender)
             await InvokeVoidAsync("execute", Id, "update");
         }
     }
+
+    private async Task OnKeyUp(KeyboardEventArgs args)
+    {
+        if (args.Key == "Enter" && OnEnterAsync != null)
+        {
+            await OnEnterAsync(Value);
+        }
+        if (args.Key == "Escape" && OnEscAsync != null)
+        {
+            await OnEscAsync(Value);
+        }
+        if (OnKeyUpAsync != null)
+        {
+            await OnKeyUpAsync(args);
+        }
+    }
 }