如何连接到数据库，并遍历C＃中的记录？ [英] How do I connect to a database and loop over a recordset in C#?

问题描述

什么是连接并在C＃查询数据库的记录集最简单的方法。

What's the simplest way to connect and query a database for a set of records in C#?

推荐答案

@Goyuix？ - 这是极好的从内存中写的东西。
在这里测试了它 - 发现连接未打开。否则很不错

@Goyuix -- that's excellent for something written from memory. tested it here -- found the connection wasn't opened. Otherwise very nice.

using System.Data.OleDb;
...

using (OleDbConnection conn = new OleDbConnection())
{
    conn.ConnectionString = "Provider=sqloledb;Data Source=yourServername\\yourInstance;Initial Catalog=databaseName;Integrated Security=SSPI;";

    using (OleDbCommand cmd = new OleDbCommand())
    {
        conn.Open();
        cmd.Connection = conn;
        cmd.CommandText = "Select * from yourTable";

        using (OleDbDataReader dr = cmd.ExecuteReader())
        {
            while (dr.Read())
            {
                Console.WriteLine(dr["columnName"]);
            }
        }
    }
}

这篇关于如何连接到数据库，并遍历C＃中的记录？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！