private void submitRequestBtn_Click(object sender, EventArgs e) { if (titleTB.Text.Trim() == "" || authorTB.Text.Trim() == "") { MessageBox.Show("Text fields can't be empty"); return; } var request = new Request(); request.Title = titleTB.Text; request.Author = authorTB.Text; _database.AddRequest(request); _parent.RefreshAllData(); this.Close(); }