准备工作
一个接口一个类(数据库管理类)
public interface DBInterface { IDbConnection GetConnection(); IEnumerable<T> Query<T>(string sql, object param = null, IDbTransaction transaction = null, bool buffered = true, int? commandTimeout = null, CommandType? commandType = null); int Execute(string sql, object param = null, IDbTransaction transaction = null, int? commandTimeout = null, CommandType? commandType = null); }
public class DB:DBInterface { IDbConnection _dbConnection; public NetOADB(IDbConnection dbConnection, string connectionString) { _dbConnection = dbConnection; _dbConnection.ConnectionString = connectionString; } /// <summary> /// 连接对象 /// </summary> /// <returns></returns> public IDbConnection GetConnection() { return _dbConnection; } /// <summary> /// 查询方法 /// </summary> /// <typeparam name="T">映射实体类</typeparam> /// <param name="sql">sql语句</param> /// <param name="param">参数对象</param> /// <param name="transaction">事务</param> /// <param name="buffered">是否缓存结果</param> /// <param name="commandTimeout">command超时时间(秒)</param> /// <param name="commandType">command类型</param> /// <returns></returns> public IEnumerable<T> Query<T>(string sql, object param = null, IDbTransaction transaction = null, bool buffered = true, int? commandTimeout = null, CommandType? commandType = null) { return _dbConnection.Query<T>(sql, param, transaction, buffered, commandTimeout, commandType); } /// <summary> /// 执行方法 /// </summary> /// <param name="sql">映射实体类</param> /// <param name="param">参数对象</param> /// <param name="transaction">事务</param> /// <param name="commandTimeout">command超时时间(秒)</param> /// <param name="commandType">command类型</param> /// <returns></returns> public int Execute(string sql, object param = null, IDbTransaction transaction = null, int? commandTimeout = null, CommandType? commandType = null) { return _dbConnection.Execute(sql, param, transaction, commandTimeout, commandType); } }
数据库管理接口和类都已经准备好,接下来就是注入进去才能进行使用
//sqlite连接字符串 var connectionString = string.Format("Data Source={0}/db.sqlite", System.IO.Directory.GetCurrentDirectory()); //将数据库连接字符串注入进去 services.AddSingleton(connectionString); //注放数据库 services.AddScoped<INetOADB, NetOADB>();