Image Cache : Image « 2D Graphics « C# / C Sharp

Image Cache

using System.Collections.Generic;
using System.Linq;
using System.Windows.Media;

namespace Photoviewer.Common
    public static class ImageCache
        private static readonly Dictionary<string, ImageSource> _cacheEntries;
        private static readonly int _maxEntries;

        static ImageCache()
            _cacheEntries = new Dictionary<string, ImageSource>();
            _maxEntries = 10;

        /// <summary>
        /// Gets a cached version of an image source
        /// specified by the key
        /// </summary>
        /// <param name="key"></param>
        /// <returns></returns>
        public static ImageSource GetCachedImageSource(string key)
            ImageSource source = null;

            if (_cacheEntries.ContainsKey(key))
                source = _cacheEntries[key];

            return source;

        /// <summary>
        /// Saves an image source in the image cache
        /// </summary>
        /// <param name="key"></param>
        /// <param name="source"></param>
        public static void SaveImageSourceInCache(string key, ImageSource source)
            if (_cacheEntries.ContainsKey(key))
                _cacheEntries[key] = source;

            if (_cacheEntries.Count + 1 > _maxEntries)

            _cacheEntries.Add(key, source);


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17.Partial Image Stretch
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22.Image Scale To Rectangle
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31.Image Resize
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