本文整理汇总了C#中SqlDatabase.DeleteAll方法的典型用法代码示例。如果您正苦于以下问题：C# SqlDatabase.DeleteAll方法的具体用法？C# SqlDatabase.DeleteAll怎么用？C# SqlDatabase.DeleteAll使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类SqlDatabase的用法示例。
在下文中一共展示了SqlDatabase.DeleteAll方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: GetThumbnail
public DisaThumbnail GetThumbnail(string id, bool group, bool small)
{
if (id == null)
{
return null;
}
var key = id + group + small;
Func<DisaThumbnail, MemoryStream> convertThumbnailToMemoryStream = thumbnail =>
{
MemoryStream memoryStream = new MemoryStream();
Serializer.Serialize<DisaThumbnail>(memoryStream, thumbnail);
return memoryStream;
};
Func<DisaThumbnail, byte[]> serializeDisaThumbnail = thumbnail =>
{
using (var memoryStream = convertThumbnailToMemoryStream(thumbnail))
{
return memoryStream.ToArray();
}
};
Func<DisaThumbnail, DisaThumbnail> cache = thumbnail =>
{
if (thumbnail == null)
{
return null;
}
lock (_cachedThumbnailsLock)
{
using (var database = new SqlDatabase<CachedThumbnail>(GetThumbnailDatabasePath()))
{
var bytes = serializeDisaThumbnail(thumbnail);
if (bytes == null)
{
return null;
}
var cachedThumbnail = new CachedThumbnail
{
Id = key,
ThumbnailBytes = bytes
};
var dbThumbnail = database.Store.Where(x => x.Id == key).FirstOrDefault();
if (dbThumbnail != null)
{
DebugPrint(">>>>>> Saving cached thumbnail after deletion ");
database.Store.Delete(x => x.Id == key);
database.Add(cachedThumbnail);
}
else
{
DebugPrint(">>>>>> Saving cached thumbnail ");
database.Add(cachedThumbnail);
}
}
}
return thumbnail;
};
lock (_cachedThumbnailsLock)
{
using (var database = new SqlDatabase<CachedThumbnail>(GetThumbnailDatabasePath()))
{
Retry:
var dbThumbnail = database.Store.Where(x => x.Id == key).FirstOrDefault();
if (dbThumbnail != null)
{
if (dbThumbnail.ThumbnailBytes == null)
{
return null;
}
using (var stream = new MemoryStream(dbThumbnail.ThumbnailBytes))
{
var disaThumbnail = Serializer.Deserialize<DisaThumbnail>(stream);
disaThumbnail.Failed = false;
if (!File.Exists(disaThumbnail.Location))
{
DebugPrint("The thumbnail cache was purged! purging the database so that everything is redownloaded");
database.DeleteAll();
goto Retry;
}
return disaThumbnail;
}
}
}
}
if (group)
{
var chat = _dialogs.GetChat(uint.Parse(id));
DebugPrint(">>>> Getting Thumbail for " + TelegramUtils.GetChatTitle(chat));
if (chat == null)
{
return null;
}
var fileLocation = TelegramUtils.GetChatThumbnailLocation(chat, small);
if (fileLocation == null)
//.........这里部分代码省略.........