System.Data.OracleClient.dll方式操作oracle数据库

System.Data.OracleClient.dll方式操作oracle数据库

一.查询语句：

 using (OracleConnection conn = new OracleConnection(System.Configuration.ConfigurationManager.ConnectionStrings["local_Orcl"].ConnectionString))
            {
                conn.Open();
                using (OracleCommand cmd = conn.CreateCommand())
                {
                    try
                    {
                        cmd.CommandText = "select * from HLB_HIS_REQUISITION";
                        DataTable dt = null;
                        OracleDataAdapter adapter = new OracleDataAdapter();
                        adapter.SelectCommand = cmd;
                        dt = new DataTable();
                        adapter.Fill(dt);
                        cmd.Parameters.Clear();

                        dataGridView1.DataSource = dt;
                    }
                    catch (Exception ee)
                    {
                        MessageBox.Show(ee.Message.ToString() + "rn" + ee.StackTrace.ToString());
                        cmd.Dispose();
                        conn.Close();
                        conn.Dispose();
                    }
                }
            }

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二.插入语句：

 using (OracleConnection conn = new OracleConnection(System.Configuration.ConfigurationManager.ConnectionStrings["local_Orcl"].ConnectionString))
            {
                conn.Open();
                using (OracleCommand cmd = conn.CreateCommand())
                {
                    try
                    {
                        cmd.CommandText = "insert into hlb_his_requisition(requisition_id,patient_name,patient_sex,patient_age,patient_bed,charge_name,sample_class,requisition_state)values(1,‘张三‘,1,1)";
                        cmd.ExecuteNonQuery();
                    }
                    catch (Exception ee)
                    {
                        MessageBox.Show(ee.Message.ToString() + "rn" + ee.StackTrace.ToString());
                        cmd.Dispose();
                        conn.Close();
                        conn.Dispose();
                    }
                }
            }

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三.连接字符串：

<add name="local_Orcl" connectionString="Data Source=(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.31.11)(PORT=1521))(CONNECT_DATA=(SERVICE_NAME=ORCL)));User ID=scott;Password=123"/>

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四.是否乱码：

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五.是否需要安装客户端：

（编辑：李大同）

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