C#连接Oracle数据库字符串(引入DLL)

DEMO示例

using Oracle.ManagedDataAccess.Client; //引入命名空间

        private void button1_Click(object sender, EventArgs e)
        {
            string strSql = "select * from s_user";
            DataTable dt = QueryDt(strSql);
        }
//Oracle连接字符串
private static string strconn = "Data Source=(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=172.30.0.37)(PORT=1521))(CONNECT_DATA=(SERVICE_NAME=EMES)));Persist Security Info=True;User ID=EMES_DEV;Password=EMES_DEV;";

        private DataTable QueryDt(string sql)
        {
            using (OracleConnection conn = new OracleConnection(strconn))
            {
                try
                {
                    if (conn.State != ConnectionState.Open)
                    {
                        conn.Open();
                    }
                    OracleDataAdapter adap = new OracleDataAdapter(sql, conn);
                    DataTable dt = new DataTable();
                    adap.Fill(dt);
                    return dt;
                }
                catch (Exception ex)
                {
                    return null;
                }
                finally
                {
                    conn.Close();
                }
            }
        }

连接字符串格式:

1 格式:
2 string strconn = "Data Source=(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=172.30.0.37)(PORT=1521))(CONNECT_DATA=(SERVICE_NAME=EMES)));Persist Security Info=True;User ID=EMES_DEV;Password=EMES_DEV;";
3 
4 格式:
5 string strconn = "Data Source=(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=远程服务器IP地址)(PORT=1521))(CONNECT_DATA=(SERVICE_NAME=远程服务器数据库服务名称)));Persist Security Info=True;User ID=数据库用户名;Password=数据库密码;";

远程服务器数据库服务名称如下：

效果：

C#连接Oracle数据库字符串(引入DLL)

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