就性能而言,通过PropertyChanged事件更好地绑定或分配

所以我仔细阅读了我的一些代码,我意识到有一些ViewCell,我在其中使用 PropertyChanged 事件和其他情况下,我使用平面旧绑定。现在为了保持一致性,我想我将遵循两种方法之一。

例如我所说的通过PropertyChanged进行分配:

C类#

  public string TitleText
    {
        get => base.GetValue(TitleTextProperty).ToString();
        set => base.SetValue(TitleTextProperty, value);
    }

    public static readonly BindableProperty TitleTextProperty = BindableProperty.Create(
      nameof(TitleText),
      typeof(string),
      typeof(MyViewCell),
      default(string),
      propertyChanged: TitleTextChange
     );

    private static void TitleTextChange(BindableObject bindable, object oldValue, object newValue)
    {
        MyViewCell cell = bindable as MyViewCell;
        cell.titleLabel.Text = newValue?.ToString() ?? string.Empty;
    }

XAML公司

  <Label
   x:Name="titleLabel"
   HorizontalTextAlignment="Start"
   Style="{StaticResource CellTitle}" />

通过绑定示例

C类#

 public string TitleText
{
    get => base.GetValue(TitleTextProperty).ToString();
    set => base.SetValue(TitleTextProperty, value);
}

public static readonly BindableProperty TitleTextProperty = BindableProperty.Create(
  nameof(TitleText),
  typeof(string),
  typeof(MyViewCell),
  default(string)
 );

 <Label
   x:Name="titleLabel"
   Text="{Binding TitleText}"
   HorizontalTextAlignment="Start"
   Style="{StaticResource CellTitle}" />

注意:我的viewcell和自定义控件就是这样