web.confige 配置数据库字符串及读取

在web.config 中

<connectionStrings>
<add name="orastring" connectionString="Data Source=TRMESTT;User ID=div_app;Password=div12app"
providerName="System.Data.oracleClient" />
</connectionStrings>

在C#中

string Tstring = ConfigurationManager.ConnectionStrings["orastring"].ToString();
OracleConnection conn2 = new OracleConnection(Tstring);
conn2.Open();
Response.Write(conn2.State);
OracleCommand comm2 = new OracleCommand("select * from tb_comp_lotid_mapping", conn2);
OracleDataAdapter myda2 = new OracleDataAdapter(comm);
DataSet myds2 = new DataSet();
myda.Fill(myds2);
if (myds2.Tables[0].Rows.Count > 0)
{
GridView2.DataSource = myds2;
GridView2.DataBind();
}