optimizer/Optimizer/HostsEditorForm.cs

using System;
using System.Windows.Forms;

namespace Optimizer
{
    public partial class HostsEditorForm : Form
    {
        string[] _toSave = null;

        public HostsEditorForm()
        {
            InitializeComponent();
            Options.ApplyTheme(this);

            if (HostsHelper.GetReadOnly())
            {
                savebtn.Enabled = false;
            }
        }

        private void HostsEditor_Load(object sender, EventArgs e)
        {
            foreach (string line in HostsHelper.ReadHosts())
            {
                textBox1.Text += line + HostsHelper.NewLine;
            }

            textBox1.Focus();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            this.Close();
        }

        private void button7_Click(object sender, EventArgs e)
        {
            _toSave = textBox1.Lines;
            HostsHelper.SaveHosts(_toSave);

            this.Close();
        }
    }
}