我var wordsCount = App.words.Count.ToString();在C#中的OnAppearing()方法中有一个变量.如何将wordsCount的值传递给XAML端内容页面的title属性,以便每次进入该页面时标题都会相应更新?有点像下面的代码:
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
x:Class="Japanese.PhrasesPage"
Title="wordsCount">
</ContentPage>
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在页面覆盖的代码后面OnAppearing()并设置Title属性:
override void OnAppearing()
{
Title = wordsCount;
}
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如果您想使用绑定,则需要设置BindingContext并使您的字段成为公共属性:
public class MyPage : ContentPage
{
public ContentPage()
{
BindingContext = this;
}
public string WordCount { get { return wordCount; }}
}
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在XAML中:
Title="{Binding WordCount}"