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我有兩個UIPickerViews,我想從UIPickerView1自動選擇第一行然後填充UIPickerView2中的數據。Xamarin ios我想從UIPickerView中自動獲得第一行而無需選擇
當前當我啓動一個應用程序時,我必須在UIPickerView1中選擇一個項目來填充UIPickerView2中的數據。
public override void ViewDidLoad()
{
base.ViewDidLoad();
this.View.BackgroundColor = UIColor.FromPatternImage(UIImage.FromFile("drawable/BackGro1.png"));
Selling.WebServiceDB ws = new Selling.WebServiceDB();
ws.LevelDataListCompleted += Ws_LevelDataListCompleted;
ws.LevelDataListAsync();
}
private void Ws_LevelDataListCompleted(object sender, Selling.LevelDataListCompletedEventArgs e)
{
if (e.Result.ToString().Equals("0"))
{
}
else
{
List<String> List = new List<String>();
foreach (var item in e.Result)
{
List.Add(item.LevelNameA);
}
var LevelFill = new LevelFill(List);
spinlvl3.Model = LevelFill;
Globals.Globlvlname = LevelFill.SelectedColor;
Selling.WebServiceDB ws2 = new Selling.WebServiceDB();
LevelFill.ColorChanged += (Sender, N) =>
{
Globals.Globlvlname = LevelFill.SelectedColor;
ws2.MajorAListCompleted += Ws2_MajorAListCompleted;
ws2.MajorAListAsync(Globals.Globlvlname);
};
}
}
class LevelFill : UIPickerViewModel
{
List<string> list;
public event EventHandler ColorChanged;
public String SelectedColor { get; private set; }
public LevelFill(List<string> list)
{
this.list = list;
}
public override void Selected(UIPickerView pickerView, nint row, nint component)
{
var color = list[(int)row];
SelectedColor = color;
ColorChanged?.Invoke(null, null);
}
}