知识大全 C#使用BerkeleyDB操作简介[7]

Posted 2022-07-16 操作

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if (key Buffer Length < key Size) keyStream SetLength(key Size); key = DbEntry Out(keyStream GetBuffer()); if (data Buffer Length < data Size) dataStream SetLength(data Size); data = DbEntry Out(dataStream GetBuffer()); continue; case ReadStatus Success: dataStream Position = ; dataStream SetLength(data Size); cust = (IPut)formatter Deserialize(dataStream); return true; default: return false; while (true);

　　调用方法

　　首先要有一个写入的实体类必须可以序列化并且实现IPut接口

[Serializable()] class Item : IPut public string Name get; set; public string Text get; set; public int ID get; set; public override string ToString() return string Format( ID: Key: ID Name); public string Key get return Name;

　　操作

using (BDBManager manager = new BDBManager( db db dat )) bool success = manager Set(new Item() ID = Name = Test Text = ); Console WriteLine(string Format( set is success)); using (BDBManager manager = new BDBManager( db db dat )) IPut put = new Item() Name = Test ; bool success = manager Get(ref put); Console WriteLine(string Format( read is item : success put ToString())); using (BDBManager manager = new BDBManager( db db dat )) IPut put = new Item() Name = Test ; bool success = manager Remove(put); Console WriteLine(string Format( remove is item : success put ToString())); using (BDBManager manager = new BDBManager( db db dat )) List<IPut> list = manager Find(); foreach (var item in list) Console WriteLine(item ToString()); Console WriteLine( end ); Console ReadKey(); cha138/Article/program/net/201311/14797