VS2010 C# 如何连接Oracle 11g数据库

vs2010 c# 连接远程oracle 11g的数据库

需要安装ODTwithODAC1120320_32bit；

安装说明：

1.setup.exe

2.选择安装的产品（Oracle Client）而不是 (Oracle Server) 

3.项目添加Oracle.DataAccess.dll的引用

4.Oracle.DataAccess.dll

   例如：D:\app\dell\product\11.2.0\client_1\odp.net\bin\4文件夹下面  

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using Oracle.DataAccess.Client;
public string GetEmail(string id)
{
string strCon = "Data Source=(DESCRIPTION=" + "(ADDRESS=(PROTOCOL=TCP)(HOST=127.0.0.1)(PORT=1521))" + "(CONNECT_DATA=(SERVICE_NAME=orcl)));" + "User Id=id;Password=password;";
OracleConnection conn = new OracleConnection(strCon);
try
{
string sql = "select name from table where id=\'" + id+"\'";
//string sql = "select * from table";
OracleCommand com = conn.CreateCommand();
com.CommandText = sql;
conn.Open();
string result = Convert.ToString(com.ExecuteScalar());

//OracleDataAdapter oraDA = new OracleDataAdapter(com);
//DataSet ds = new DataSet();
//oraDA.Fill(ds);
//conn.Clone();
//DataTable dt = ds.Tables[0];
//string result = "";
//if (dt != null && dt.Rows.Count > 0)
//{
//    foreach (DataRow dr in dt.Rows)
//    {
//        //string a = dr["a"].ToString();
//        //string b = dr["b"].ToString();
//        //string c = dr["c"].ToString();
//        //string d = dr["d"].ToString();
//    }
//}

return result;
}
catch (Exception ex)
{
return "no";
}
finally
{
conn.Close();
}

}

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见图：