From 085a9b6181f143836e224ed82cb817d6661b6b62 Mon Sep 17 00:00:00 2001
From: ClemensFischer <fischer.clemens@gmail.com>
Date: Tue, 18 Feb 2025 17:22:14 +0100
Subject: [PATCH] Update TileImageLoader.cs

---
 MapControl/Shared/TileImageLoader.cs | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/MapControl/Shared/TileImageLoader.cs b/MapControl/Shared/TileImageLoader.cs
index ed10176b..37e65b00 100644
--- a/MapControl/Shared/TileImageLoader.cs
+++ b/MapControl/Shared/TileImageLoader.cs
@@ -43,6 +43,12 @@ namespace MapControl
         /// </summary>
         public static TimeSpan DefaultCacheExpiration { get; set; } = TimeSpan.FromDays(1);
 
+        /// <summary>
+        /// Minimum expiration time for cached tile images. A transmitted expiration time
+        /// that falls below this value is ignored. The default value is TimeSpan.Zero.
+        /// </summary>
+        public static TimeSpan MinCacheExpiration { get; set; } = TimeSpan.Zero;
+
         /// <summary>
         /// Maximum expiration time for cached tile images. A transmitted expiration time
         /// that exceeds this value is ignored. The default value is ten days.
@@ -170,6 +176,7 @@ namespace MapControl
                     try
                     {
                         var expiration = !response.MaxAge.HasValue ? DefaultCacheExpiration
+                            : response.MaxAge.Value < MinCacheExpiration ? MinCacheExpiration
                             : response.MaxAge.Value > MaxCacheExpiration ? MaxCacheExpiration
                             : response.MaxAge.Value;