简介
Entity, Framework, EF, Core, Data, O/RM, entity-framework-core,TDengine
Maikebing.Data.Taos 是一个基于TDengine 的RESTful Connector构建的ADO.Net 提供器。 这将允许你通过.Net Core 访问TDengine数据库。
Maikebing.EntityFrameworkCore.Taos 是一个Entity Framework Core 的提供器， 基于Maikebing.Data.Taos构建。 此功能尚未开发完成， 暂时误作使用。
安装使用:
Install-Package Maikebing.Data.Taos -Version 1.0.0
Maikebing.Data.Taos 使用范例
string database = "db_" + DateTime.Now.ToString("yyyyMMddHHmmss"); var builder = new TaosConnectionStringBuilder() { DataSource = "http://td.gitclub.cn/rest/sql", DataBase = database, // Token = "cm9vdDp0YW9zZGF0YQ==" Username="root", Password= "taosdata" }; using (var connection = new TaosConnection(builder.ConnectionString)) { connection.Open(); Console.WriteLine("create {0} {1}", database, connection.CreateCommand($"create database {database};").ExecuteNonQuery()); Console.WriteLine("create table t {0} {1}", database, connection.CreateCommand($"create table {database}.t (ts timestamp, cdata int);").ExecuteNonQuery()); Console.WriteLine("insert into t values {0} ", connection.CreateCommand($"insert into {database}.t values ('{DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss.ms")}', 10);").ExecuteNonQuery()); Console.WriteLine("insert into t values {0} ", connection.CreateCommand($"insert into {database}.t values ('{DateTime.Now.AddMonths(1).ToString("yyyy-MM-dd HH:mm:ss.ms")}', 20);").ExecuteNonQuery()); var cmd_select = connection.CreateCommand(); cmd_select.CommandText = $"select * from {database}.t"; var reader = cmd_select.ExecuteReader(); List<Dictionary<string, object>> valuePairs = new List<Dictionary<string, object>>(); while (reader.Read()) { Dictionary<string, object> pairs = new Dictionary<string, object>(); for (int i = 0; i < reader.FieldCount; i++) { pairs.Add(reader.GetName(i), reader.GetValue(i)); } valuePairs.Add(pairs); } Console.WriteLine(Newtonsoft.Json.JsonConvert.SerializeObject(valuePairs)); Console.WriteLine("DROP TABLE {0} {1}", database, connection.CreateCommand($"DROP TABLE {database}.t;").ExecuteNonQuery()); Console.WriteLine("DROP DATABASE {0} {1}", database, connection.CreateCommand($"DROP DATABASE {database}").ExecuteNonQuery()); Console.ReadKey(); connection.Close(); }