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Update ImageFileCache.cs

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ClemensFischer 2025-03-29 18:53:23 +01:00
parent 07772c7626
commit 1c47b358eb
1 changed files with 4 additions and 7 deletions
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11
MapControl/Shared/ImageFileCache.cs
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@ -11,12 +11,8 @@ using System.Threading.Tasks;
namespace MapControl.Caching
{
/// <summary>
/// IDistributedCache implementation based on local files.
/// <br/><b>
/// Do not create an ImageFileCache instance that operates on a directory
/// which contains other files than downloaded map tile images.
/// ImageFileCache may unintentionally delete these files.
/// </b>
/// IDistributedCache implementation that creates a single file per cache entry.
/// The cache expiration time is stored in the file's CreationTime property.
/// </summary>
public sealed class ImageFileCache : IDistributedCache, IDisposable
{
@ -319,7 +315,8 @@ namespace MapControl.Caching
{
deletedFileCount = directory.EnumerateDirectories().Sum(ScanDirectory);
foreach (var file in directory.EnumerateFiles().Where(f => f.CreationTime <= DateTime.Now))
foreach (var file in directory.EnumerateFiles()
.Where(f => f.CreationTime > f.LastWriteTime && f.CreationTime <= DateTime.Now))
{
file.Delete();
deletedFileCount++;