oracle无法解析连接字符串，请教

C# code:
string StrConnection = "Server=127.0.0.1;Data Source=kagami;User ID=system;Password=kagami;";
string strCommand = "SELECT id as 产品编号, name as 产品名字 from test";
OracleConnection OraCon = new OracleConnection(StrConnection);
try
{
OraCon.Open(); ///无法解析
OracleCommand OraCommand = new OracleCommand(strCommand, OraCon);
OracleDataReader Reader = OraCommand.ExecuteReader();
while (Reader.Read())
{
Console.WriteLine("产品编号:{0}, 产品名字:{1}", Reader[0], Reader[1]);
}
}
finally
{
OraCon.Close();
}

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看看是不是连接字符串错了 
试下这个吧 

"Data Source=数据库名;Persist Security Info=True;User ID=用户名;Password=密码;Unicode=True";

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引用

本地ORACLE客户端配置
检查tnsnames.ora
sql plus中用户名、密码、数据库
是否与字符串一致

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继续求助，还是搞不定，sqlplus,plsqldeverloper都可连接
tnsnames.ora:# tnsnames.ora Network Configuration File: E:\oracle\network\admin\tnsnames.ora
# Generated by Oracle configuration tools.

KAGA