98 lines
2.8 KiB
C#
98 lines
2.8 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using System.Windows;
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using System.Windows.Controls;
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using System.Windows.Data;
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using System.Windows.Documents;
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using System.Windows.Input;
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using System.Windows.Media;
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using System.Windows.Media.Imaging;
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using System.Windows.Shapes;
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namespace Common
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{
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/// <summary>
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/// TipMessageWindow.xaml 的交互逻辑
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/// </summary>
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public partial class TipMessageWindow : Window
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{
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public TipMessageWindow(string message)
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{
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InitializeComponent();
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MessageTextBlock.Text = message;
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}
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}
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public static class DialogManager
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{
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// 事件：操作完成通知
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public static event Action OperationCompleted;
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// 显示提示窗口并等待操作完成
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public static async Task ShowDialogAsync(Window owner, string message, Func<Task> operation)
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{
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var dialog = new TipMessageWindow(message);
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dialog.Owner = owner;
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// 步骤1：先订阅事件（确保操作触发事件前已订阅）
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var closeTask = WaitForDialogCloseAsync(dialog);
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// 步骤2：启动耗时操作（此时事件已订阅）
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var task = Task.Run(async () =>
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{
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try
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{
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await operation?.Invoke();
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}
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finally
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{
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// 操作完成（无论成功/失败）都触发关闭事件
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OperationCompleted?.Invoke();
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}
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});
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// 步骤3：显示弹窗
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dialog.Show();
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// 步骤4：等待弹窗关闭 + 操作完成
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await closeTask;
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await task;
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}
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private static Task WaitForDialogCloseAsync(Window dialog)
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{
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var tcs = new TaskCompletionSource<bool>();
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// 定义事件处理方法（方便后续取消订阅）
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Action operationCompletedHandler = null;
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// 事件触发时关闭弹窗
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operationCompletedHandler = () =>
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{
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// 必须在UI线程操作弹窗
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dialog.Dispatcher.Invoke(() =>
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{
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if (dialog.IsVisible)
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dialog.Close();
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});
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// 取消订阅（避免重复触发）
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OperationCompleted -= operationCompletedHandler;
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};
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// 订阅事件
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OperationCompleted += operationCompletedHandler;
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// 弹窗关闭时完成Task + 取消订阅
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dialog.Closed += (s, e) =>
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{
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OperationCompleted -= operationCompletedHandler;
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tcs.SetResult(true);
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};
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return tcs.Task;
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}
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}
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}
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