private async void buttonGetId_Click(object sender, EventArgs e) { var book = await BookApi.Get(Convert.ToInt32(textBoxGetId.Text)); listBoxGetId.Items.Clear(); listBoxGetId.Items.Add(book); }
private async void buttonGet_Click(object sender, EventArgs e) { var books = await BookApi.Get(); listBoxGet.Items.Clear(); foreach (var item in books) { listBoxGet.Items.Add(item); } }