string strConnectionString = string.Empty;
ConnectionStringSettings objSettings = ConfigurationManager.ConnectionStrings["Name"];
if (objSettings != null)
{
 strConnectionString = objSettings.ConnectionString;
}
SqlConnection m_objConnection = new SqlConnection(strConnectionString);

string strConnectionString = string.Empty;
ConnectionStringSettings objSettings = ConfigurationManager.ConnectionStrings["System.Data.SqlClient"];
if (objSettings != null)
{
 strConnectionString = objSettings.ConnectionString;
}
SqlConnection m_objConnection = new SqlConnection(strConnectionString);