System.Configuration.ConfigurationManager

Question

Hi everyone I had installed in my computer Visual Studio 2008 Trial when I try use the class ConfigurationManager to change in run time my stringconnection seems that class don't exists. What I must do? Best Regards Renan Paiva msn: renanpaiva64@hotmail.com

renan paiva · Answer

So sorry I'm brazilam and my English is so poor I add reference and then appear the class ConfigurationManager to me thank you so much.

renan paiva · Answer

First thanks for your reply follow there is my font using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Data.SqlClient; using System.Drawing; using System.Linq; using System.Text; using System.Windows.Forms; using System.Configuration; namespace Pipe_Analyst_Control { public partial class Conexao : Form { public Conexao() { InitializeComponent(); } private void Cancelbutton_Click( object sender EventArgs e) { this .Dispose(); } private void Savebutton_Click( object sender EventArgs e) { SqlConnectionStringBuilder bilder = new SqlConnectionStringBuilder (); bilder.DataSource = ServidortextBox.Text.Trim(); bilder.InitialCatalog = pipedata ; bilder.IntegratedSecurity = true ; bilder.UserID = UsertextBox.Text.Trim(); bilder.Password = SenhatextBox.Text.Trim(); ConfigurationSettings .AppSettings.Set( pipedataConnectionString  bilder.ConnectionString); //here I must use ConfigurationManager but it is unviable. } private void Testbutton_Click( object sender EventArgs e) { SqlConnection SqlCon = new SqlConnection (Pipe_Analyst_Control.Properties. Settings .Default.pipedataConnectionString); try { SqlCon.Open(); MessageBox .Show( ConexÆo configurada com sucesso  Sucesso  MessageBoxButtons .OK MessageBoxIcon .Asterisk); } catch { MessageBox .Show( A conexÆo falhou por favor configure novamente ou tente salvar as configura‡äes vigentes  ERRO  MessageBoxButtons .OK MessageBoxIcon .Error); } } } }

Brandon Lewis · Answer

Did you add a reference to System.Configuration to your project? Even though you can access the System.Configuration namespace without it you still cannot access the ConfigurationManager class without adding it :)