Hi everyone, when i make the math of any number * 1% it gives me a long number, i wanted to cut it down to 2 decimal C# WPF conversion : <p>My question here is how can i convert the result of the math into a two decimal result?{
private void BtnAjoutInteret_Click(object sender, RoutedEventArgs e)//When i press the ok button</p>

<pre><code>        try
        {
                for (int i = 1; i &lt; clients.ListesClients.Count; i++)// For all the bank clients add //one percent to the sum why is it so hard to post a question on stackoverflow
                {
                    double interet = .01;
                    clients.ListesClients[i].Balance = (clients.ListesClients[i].Balance * interet) + (clients.ListesClients[i].Balance);
                    clients.AjustementCompte(clients.ListesClients[0]);//once the one percent is added use the methode to add the new balance to the txtfile.

                }


            MessageBox.Show("Transaction accepter");
            LviewListeClients.Items.Refresh();

        }
        catch (Exception)
        {

            MessageBox.Show("erreur 5 ");
            return;
        }
    }
public  void AjustementCompte(Client Nouvelle)//This is the method to add the new balance
    {
        //listeClients.Add(NouvelleTransaction);
        StreamWriter Writer = new StreamWriter(filename);
        foreach (Client client in ListesClients)
        {
            Writer.WriteLine($"{client.ID};{client.TypeDeCompte};{client.Balance}");
        }
        Writer.Close();
    } }
</code></pre>
