本文整理汇总了C#中INavigationService.DisplayAlert方法的典型用法代码示例。如果您正苦于以下问题：C# INavigationService.DisplayAlert方法的具体用法？C# INavigationService.DisplayAlert怎么用？C# INavigationService.DisplayAlert使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类INavigationService的用法示例。
在下文中一共展示了INavigationService.DisplayAlert方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: CategoriesListViewModel
public CategoriesListViewModel(IProductService service, INavigationService navi, IScanner scanner)
{
_service = service;
_navi = navi;
_scanner = scanner;
Items = new NotifyTaskCompletion<List<Product>>(_service.GetProducts());
Categories = new NotifyTaskCompletion<List<string>>(_service.GetCategories());
NavigateToCategory = new RelayCommand<string>(async cat =>
{
var items = (await _service.GetProductsForCategory(cat))
.OrderByDescending(i => i.Rating)
.ToList();
if (items != null && items.Any())
{
var page = App.GetProductsListPage(items, cat);
await _navi.PushAsync(page);
}
else
{
await _navi.DisplayAlert("Error", "There are no items in the category " + cat);
}
});
_searchCommand = new RelayCommand(Search, () => !string.IsNullOrWhiteSpace(SearchTerm));
ScanCommand = new RelayCommand(async () =>
{
var result = await _scanner.Scan();
SearchTerm = result.Text;
Search();
});
}