public static void CopyText()
        {
            string srText = ((MainWindow)Application.Current.MainWindow).srBox.Text;
            string contactText = ((MainWindow)Application.Current.MainWindow).contactBox.Text;
            string usernameText = ((MainWindow)Application.Current.MainWindow).usernameBox.Text;
            string generalText = ((MainWindow)Application.Current.MainWindow).generalBox.Text;

            string copyText = "";

            Clipboard.SetDataObject(copyText);
        }

public static void CopyCreditText()
        {
            string srText = ((MainWindow)Application.Current.MainWindow).srBox.Text;
            string usernameText = ((MainWindow)Application.Current.MainWindow).usernameBox.Text;
            string buyerText = ((CreditWindow)Application.Current.MainWindow).buyerBox.Text;
            string itemText = ((CreditWindow)Application.Current.MainWindow).itemBox.Text;
            string amountText = ((CreditWindow)Application.Current.MainWindow).amountBox.Text;
            string typeText = ((CreditWindow)Application.Current.MainWindow).typeBox.Text;
            string reasonText = ((CreditWindow)Application.Current.MainWindow).reasonBox.Text;

        string copyText = "";

        Clipboard.SetDataObject(copyText);
    }

string buyerText = ((CreditWindow)Application.Current.MainWindow).buyerBox.Text;