private void SaveButton_Click(object sender, EventArgs e)
        {
            CampaignData data = new CampaignData();

            List <string> urls = new List <string>();

            foreach (var item in this.ImagesListbox.Items)
            {
                urls.Add(item.ToString());
            }

            bool result = data.SaveCampaign(new Campaign()
            {
                CampaignName = this.CampaignNameTextbox.Text.Trim(),
                Description  = this.DescriptionTextbox.Text.Trim(),
                Note         = this.NoteTextbox.Text.Trim(),
                Price        = this.PriceTextbox.Text.Trim(),
                Status       = "Saved",
                Title        = this.TitleTextbox.Text.Trim(),
                ImageUrls    = urls
            });

            if (result)
            {
                MessageBox.Show("Save Successful.");
                this.CampaignNameTextbox.Text = string.Empty;
                this.DescriptionTextbox.Text  = string.Empty;
                this.NoteTextbox.Text         = string.Empty;
                this.PriceTextbox.Text        = string.Empty;
                this.TitleTextbox.Text        = string.Empty;
                this.ImagesListbox.Items.Clear();
            }
        }