本文整理汇总了C#中Xamarin.Forms.ContentPage.DisplayAlert方法的典型用法代码示例。如果您正苦于以下问题：C# ContentPage.DisplayAlert方法的具体用法？C# ContentPage.DisplayAlert怎么用？C# ContentPage.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Xamarin.Forms.ContentPage的用法示例。
在下文中一共展示了ContentPage.DisplayAlert方法的15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: ExecuteLoadItemsCommand
private async Task ExecuteLoadItemsCommand()
{
if (IsBusy)
return;
IsBusy = true;
try{
var httpClient = new HttpClient();
var feed = "http://api.espn.com/v1/sports/soccer/fifa.world/teams?apikey=trs58u4j7gw4aat7ck8dsmgc";
var responseString = await httpClient.GetStringAsync(feed);
Teams.Clear();
var items = await ParseFeed(responseString);
foreach (var item in items.OrderBy(t => t.Name))
{
Teams.Add(item);
}
keepTeams = Teams.ToList();
} catch (Exception) {
var page = new ContentPage();
page.DisplayAlert ("Error", "Unable to load teams.", "OK", null);
}
IsBusy = false;
}示例2: ExecuteLoadStatsCommand
public async Task ExecuteLoadStatsCommand()
{
if (IsBusy)
return;
IsBusy = true;
try
{
var adminManager = new AdminManager(Settings.AccessToken);
Names.Clear();
foreach(var name in await adminManager.PopularNames())
{
Names.Add(name);
}
}
catch (Exception ex)
{
var page = new ContentPage();
page.DisplayAlert("Error", "Unable to load.", "OK"); ;
}
finally
{
IsBusy = false;
}
}示例3: ExecuteLoadItemsCommand
private void ExecuteLoadItemsCommand()
{
if (IsBusy)
return;
IsBusy = true;
try
{
KnockoutMatches.Clear();
var result = MatchService.GetKnockoutMatches();
foreach (var item in result)
{
KnockoutMatches.Add(item);
}
}
catch (Exception)
{
var page = new ContentPage();
page.DisplayAlert("Error", "Unable to load matches.", "OK", null);
}
IsBusy = false;
}示例4: ExecuteLoadFlagsCommand
public async Task ExecuteLoadFlagsCommand()
{
if (IsBusy)
return;
IsBusy = true;
try
{
var userManager = new UserManager(Settings.AccessToken);
var flags = await userManager.GetFlags();
//Use linq to sorty our monkeys by name and then group them by the new name sort property
var sorted = from flag in flags
orderby flag.AlertLevel
group flag by flag.AlertLevel.ToString() into flagGroup
select new Grouping<string, Flag>(flagGroup.Key, flagGroup);
//create a new collection of groups
FlagsGrouped = new ObservableCollection<Grouping<string, Flag>>(sorted);
OnPropertyChanged("FlagsGrouped");
}
catch (Exception ex)
{
var page = new ContentPage();
page.DisplayAlert("Error", "Unable to load flags.", "OK"); ;
}
finally
{
IsBusy = false;
}
}示例5: ExecuteLoadStatsCommand
public async Task ExecuteLoadStatsCommand()
{
if (IsBusy)
return;
IsBusy = true;
try
{
var adminManager = new AdminManager(Settings.AccessToken);
RegDates.Clear();
foreach(var reg in await adminManager.TotalRegistrations())
{
RegDates.Add(new MyRegDate
{
Title = new DateTime(reg.Year, reg.Month, reg.Day).ToString("D"),
Detail = reg.Total.ToString()
});
}
}
catch (Exception ex)
{
var page = new ContentPage();
page.DisplayAlert("Error", "Unable to load.", "OK"); ;
}
finally
{
IsBusy = false;
}
}示例6: ExecuteArticleCommand
public async Task ExecuteArticleCommand()
{
if (IsBusy)
return;
IsBusy = true;
LoadArticleCommand.ChangeCanExecute();
try
{
GetArticleHtmlandUpdate();
Expand = " CLOSE ▲";
OnPropertyChanged("Expand");
}
catch (Exception ex)
{
var page = new ContentPage();
page.DisplayAlert("Error", "Unable to load Article Content.", "OK");
}
IsBusy = false;
LoadArticleCommand.ChangeCanExecute();
}示例7: ExecuteLoadItemsCommand
private async Task ExecuteLoadItemsCommand()
{
if (IsBusy)
return;
IsBusy = true;
try{
var responseString = string.Empty;
using(var httpClient = new HttpClient())
{
var feed = "http://feeds.hanselman.com/ScottHanselman";
responseString = await httpClient.GetStringAsync(feed);
}
FeedItems.Clear();
var items = await ParseFeed(responseString);
foreach (var item in items)
{
FeedItems.Add(item);
}
} catch (Exception ex) {
var page = new ContentPage();
var result = page.DisplayAlert ("Error", "Unable to load blog.", "OK");
}
IsBusy = false;
}示例8: MainPage
public MainPage()
{
button = new Button
{
Text = "Click me",
};
label = new Label
{
XAlign = TextAlignment.Center,
Text = "Welcome to Xamarin Forms!"
};
button.Clicked += async (sender, e) =>
{
var data = "Cryptographic example";
var pass = "MySecretKey";
var contentPage = new ContentPage();
var salt = Crypto.CreateSalt(16);
await contentPage.DisplayAlert("Alert", "Encrypting String " + data + ", with salt " + BitConverter.ToString(salt), "OK");
var bytes = Crypto.EncryptAes(data, pass, salt);
await contentPage.DisplayAlert("Alert", "Encrypted, Now Decrypting", "OK");
var str = Crypto.DecryptAes(bytes, pass, salt);
await contentPage.DisplayAlert("Alert", "Decryted " + str, "OK");
};
this.Title = "Crypto Forms";
// The root page of your application
this.Content = new StackLayout
{
VerticalOptions = LayoutOptions.Center,
Children =
{
label,
button
}
};
}示例9: App
public App()
{
var editField = new Entry
{
Placeholder = "Enter text for setting",
Text = SettingsSample.Helpers.Settings.GeneralSettings
};
var buttonSave = new Button
{
Text = "Save Setting"
};
var buttonGet = new Button
{
Text = "Get Setting"
};
// The root page of your application
MainPage = new ContentPage
{
Content = new StackLayout
{
VerticalOptions = LayoutOptions.Center,
Children = {
new Label {
XAlign = TextAlignment.Center,
Text = "Enter value to save to settings:"
}, editField,
buttonSave,
buttonGet
}
}
};
buttonSave.Clicked += (sender, args) =>
{
SettingsSample.Helpers.Settings.GeneralSettings = editField.Text;
};
buttonGet.Clicked += (sender, args) =>
{
MainPage.DisplayAlert("Current Value:", SettingsSample.Helpers.Settings.GeneralSettings, "OK");
};
}示例10: ExecuteLoadStatsCommand
public async Task ExecuteLoadStatsCommand()
{
if (IsBusy)
return;
IsBusy = true;
try
{
var adminManager = new AdminManager(Settings.AccessToken);
var avatarManager = new AvatarManager(Settings.AccessToken);
Count = await adminManager.TotalAvatarCount();
var avas = await avatarManager.GetStaticAvatars();
Avatars.Clear();
var items = await adminManager.PopularAvatars();
foreach(var avatar in items.OrderByDescending(a => a.Count))
{
var myava = avas.FirstOrDefault(a => a.Id == avatar.AvatarId);
if (myava == null)
continue;
Avatars.Add(new MyAvatar
{
Count = avatar.Count.ToString(),
Location = myava.Location,
Url = EndPoints.BaseUrl + myava.Location
});
}
}
catch (Exception ex)
{
var page = new ContentPage();
page.DisplayAlert("Error", "Unable to load.", "OK"); ;
}
finally
{
IsBusy = false;
}
}示例11: ExecuteLoadItemsCommand
private async Task ExecuteLoadItemsCommand()
{
if (IsBusy)
return;
IsBusy = true;
try{
/*
var items = App.WorkManager.GetWorkItems();
foreach(var item in items)
{
workItems.Add(item);
}
*/
} catch (Exception ex) {
var page = new ContentPage();
var result = page.DisplayAlert ("Error", "Unable to load work items.", "OK");
}
IsBusy = false;
}示例12: App
public App()
{
var loginButton = new Button { Text = "Login", StyleId = "loginButton" };
var mainPage = new ContentPage {
Content = new StackLayout {
VerticalOptions = LayoutOptions.Center,
HorizontalOptions = LayoutOptions.Center,
Children = {
new Entry { Placeholder = "Username", StyleId = "username" },
new Entry { Placeholder = "Password", StyleId = "password" },
loginButton
}
}
};
loginButton.Clicked += async (object sender, EventArgs e) => {
await mainPage.DisplayAlert ("Login", "Logged In", "OK");
};
// The root page of your application
MainPage = mainPage;
}示例13: App
// --------------------------------------------------------------------------
//
// CONSTRUCTORS
//
// --------------------------------------------------------------------------
public App () {
// Create the orange image that goes on the main screen of the app
var orangeImage = new CustomImage { Aspect = Aspect.Fill };
orangeImage.Source = "orange_square.png";
// Create a ContentPage to use as the view of the app.
var page = new ContentPage {
Content = new StackLayout {
VerticalOptions = LayoutOptions.Center,
Children = { orangeImage }
}
};
// When the image dispatches a tap event (custom event, see CustomImage.cs),
// then display an alert.
orangeImage.TapEvent += (object sender, PointEventArgs e) => {
page.DisplayAlert("Tap!", String.Format("({0}, {1})", e.X, e.Y), "Cancel");
};
// Set the main page of the app.
MainPage = page;
}示例14: ExecuteLoadItemsCommand
private async Task ExecuteLoadItemsCommand()
{
if (IsBusy)
return;
IsBusy = true;
try
{
Result.Clear();
using(var httpClient = new HttpClient())
{
for (int i = 1; i <= 15; i++)
{
var feed = string.Format("http://footballdb.herokuapp.com/api/v1/event/world.2014/round/{0}",i);
var responseString = await httpClient.GetStringAsync(feed);
Result.AddRange(MatchService.GetMatchDay(responseString));
}
foreach(var item in Result)
{
item.HomeScore = (item.HomeScore == "" || item.HomeScore == null) ?
"0" : item.HomeScore;
item.AwayScore = (item.AwayScore == "" || item.AwayScore == null) ?
"0" : item.AwayScore;
}
}
this.ItemsLoaded(this, new EventArgs());
}
catch (Exception)
{
var page = new ContentPage();
page.DisplayAlert ("Error", "Unable to load matches.", "OK", null);
}
IsBusy = false;
}示例15: ExecuteLoadItemsCommand
private async Task ExecuteLoadItemsCommand()
{
if (IsBusy)
return;
IsBusy = true;
var error = false;
try
{
var httpClient = new HttpClient();
var feed = "http://blog.appointy.com/feed/";
var responseString = await httpClient.GetStringAsync(feed);
FeedItems.Clear();
var items = await ParseFeed(responseString);
foreach (var feedItem in items)
{
FeedItems.Add(feedItem);
}
}
catch
{
error = true;
}
if (error)
{
var page = new ContentPage();
var result = page.DisplayAlert("Oops!", "Unable to load .", "OK");
}
IsBusy = false;
}