DicomDataSet ds = new DicomDataSet();
                    
// Operations that cause cacheing 
ds.CacheMode = CacheTypes.All;
ds.Read("Compressed_Dataset.dcm");
ds.DecompressAll();
var cacheSize = ds.GetCacheSize(CacheTypes.All);
                    
// E.g. clear the cache when it meets a set threshold
int maxCacheBeforeClear = 5000000;
if (cacheSize >= maxCacheBeforeClear)
    ds.ClearCaches();