[닷넷교육,C#교육,실무교육학원추천_탑크리에듀]C#4.0 DataAdapter, DataSet, DataTable 간단 예제(오라클 EMP 테이블)

참고하세요~

 

간단한 콘솔 애플리케이션 입니다.

 

 

using System;
using System.Data;
using System.Data.OleDb;

class DatasetExample
{
    public static void Main()
    {
        OLEDB();
    }

    public static void OLEDB()
    {
        //아래 Data Source는 oracle설치 폴더 network/admin/tnsnames.ora 파일에 있는 접속을 원하는 DB의 별명 입니다.,
        string cnString = @"Provider=MSDORA;data source=onj;User ID=scott;Password=tiger";

        OleDbConnection OleCn = new OleDbConnection(cnString);
        OleCn.Open();

        string sql = "SELECT * FROM emp";

        try
        {
            OleDbCommand OleCmd = new OleDbCommand(sql, OleCn);
            OleDbDataAdapter OleDa = new OleDbDataAdapter(OleCmd);

            DataSet ds = new DataSet();

            OleDa.Fill(ds, "EMP");
            OleCn.Close();

            DataTable dt = ds.Tables["EMP"];
            Console.Write("\n\n");

            foreach (DataColumn hdr in dt.Columns)
            {
                Console.Write("{0, -10}\t", hdr.ColumnName);
            }
            Console.WriteLine("\n---------------------------------------------------");

            foreach (DataRow dtr in dt.Rows)
            {
                foreach (DataColumn dtc in dt.Columns)
                {
                    Console.Write("{0, -10}", dtr[dtc.ColumnName].ToString().Trim());
                    Console.Write("\t");
                }
                Console.Write("\n");
            }
        }
        catch (Exception e)
        {
            Console.WriteLine("Error: " + e);
        }
    }
}

 

 

[결과]