calling a function and filling textbox

Imports System.Configuration Imports System.Data.OracleClient Public Class DBGC     Public Function GetCountry() As String              Try             Dim conn As New OracleConnection             conn.ConnectionString = ConfigurationManager.ConnectionStrings("myconnec").ToString()             conn.Open()             Dim cmdMain As New OracleClient.OracleCommand()                   cmdMain.CommandText = "SELECT DBG('COUNTRY') FROM DUAL"             cmdMa ...