private void BtnPopOk_Click(object sender, EventArgs e) { if (txtCampaignName.Text.Length == 0) { View view = (View)sender; Snackbar.Make(view, "Must Enter a name", Snackbar.LengthLong) .SetAction("Action", (Android.Views.View.IOnClickListener)null).Show(); } else { View view = (View)sender; if (cc.AddCampaign(txtCampaignName.Text)) { adapter.Add(txtCampaignName.Text.ToString()); adapter.NotifyDataSetChanged(); popupDialog.Dismiss(); popupDialog.Hide(); } else { Snackbar.Make(view, "Campaign Already Exists", Snackbar.LengthShort) .SetAction("Action", (Android.Views.View.IOnClickListener)null).Show(); } } }