36 lines
883 B
C#
36 lines
883 B
C#
using System.Threading;
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using System.Threading.Tasks;
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using System.Windows.Media;
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namespace OrderSupportTicket.Services;
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/// <summary>
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/// 商品缩略图加载器，限制并发下载数量，避免工单列表同时发起大量请求。
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/// </summary>
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internal static class ProductImageLoader
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{
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private static readonly SemaphoreSlim Gate = new SemaphoreSlim(4, 4);
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public static async Task<ImageSource> LoadAsync(string url)
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{
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if (string.IsNullOrWhiteSpace(url))
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return null;
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await Gate.WaitAsync().ConfigureAwait(false);
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try
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{
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return await Task.Run(
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() => AllBase.ImageBuild.LoadBitmipImageFromUrl(url.Trim()))
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.ConfigureAwait(false);
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}
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catch
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{
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return null;
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}
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finally
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{
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Gate.Release();
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}
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}
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}
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