好久不搞 C# 了...忘了好多..找个 C#连接 远程 Oracle 数据库连接字符串.

注:usingSystem.Data.OracleClient; 需要在项目右键点击,选择 '添加引用' ,在 .NET 中选择该项..

usingSystem;
usingSystem.Collections.Generic;
usingSystem.ComponentModel;
usingSystem.Data;
usingSystem.Drawing;
usingSystem.Linq;
usingSystem.Text;
usingSystem.Windows.Forms;
usingSystem.Data.OracleClient;
namespaceAppneu
{
    publicpartialclassFrmCnfTable:Form
    {
        publicFrmCnfTable()
        {
            InitializeComponent();
        }

        privatevoidbutton1_Click(objectsender,EventArgse)
        {
            #region 从region到endregion是手工写的。别的都是系统自动生成的

            stringconstring="Data Source=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.3.120) (PORT=1521)))(CONNECT_DATA=(SERVICE_NAME=orcl)));Persist Security Info=True;User Id=wangjj; Password=wangjj";
            OracleConnectionconn=newOracleConnection(constring);//进行连接         

            try
            {
                conn.Open();//打开指定的连接                 
                OracleCommandcom=conn.CreateCommand();
                com.CommandText="Select Sysdate From dual ";//写好想执行的Sql语句                 
                OracleDataReaderodr=com.ExecuteReader();
                while (odr.Read())//读取数据，如果返回为false的话，就说明到记录集的尾部了                  
                {
                    label1.Text="远程数据库时间:"+odr.GetOracleDateTime(0).ToString();//获得远程数据库时间
                }
                odr.Close();//关闭reader.这是一定要写的
            }
            catch
            {
                MessageBox.Show("erro");//如果发生异常，则提示出错            
            }
            finally
            {
                conn.Close();//关闭打开的连接            
            }
            #endregion

        }
    }

}

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