背水一战 Windows 10 (37) - 控件(弹出类): MessageDialog, ContentDialog
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作者:webabcd
介绍
背水一战 Windows 10 之 控件(弹出类)
- MessageDialog
- ContentDialog
示例
1、MessageDialog 的示例
Controls/FlyoutControl/MessageDialogDemo.xaml
<Page x:Class="Windows10.Controls.FlyoutControl.MessageDialogDemo" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:local="using:Windows10.Controls.FlyoutControl" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" mc:Ignorable="d"> <Grid Background="Transparent"> <StackPanel Margin="10 0 10 10"> <TextBlock Name="lblMsg" Margin="5" /> <Button Name="btnShowMessageDialogSimple" Margin="5" Content="弹出一个简单的 MessageDialog" Click="btnShowMessageDialogSimple_Click" /> <Button Name="btnShowMessageDialogCustomCommand" Margin="5" Content="弹出一个自定义命令按钮的 MessageDialog" Click="btnShowMessageDialogCustomCommand_Click" /> </StackPanel> </Grid> </Page>
Controls/FlyoutControl/MessageDialogDemo.xaml.cs
/* * MessageDialog - 信息对话框(未继承任何类) * Content - 内容 * Title - 标题 * Options - 选项(Windows.UI.Popups.MessageDialogOptions 枚举) * None - 正常,默认值 * AcceptUserInputAfterDelay - 为避免用户误操作,弹出对话框后短时间内禁止单击命令按钮 * Commands - 对话框的命令栏中的命令集合,返回 IList<IUICommand> 类型的数据 * DefaultCommandIndex - 按“enter”键后,激发此索引位置的命令 * CancelCommandIndex - 按“esc”键后,激发此索引位置的命令 * ShowAsync() - 显示对话框,并返回用户激发的命令 * * IUICommand - 命令 * Label - 显示的文字 * Id - 参数 */ using System; using Windows.UI.Popups; using Windows.UI.Xaml; using Windows.UI.Xaml.Controls; namespace Windows10.Controls.FlyoutControl { public sealed partial class MessageDialogDemo : Page { public MessageDialogDemo() { this.InitializeComponent(); } // 弹出一个简单的 MessageDialog private async void btnShowMessageDialogSimple_Click(object sender, RoutedEventArgs e) { MessageDialog messageDialog = new MessageDialog("内容"); await messageDialog.ShowAsync(); } // 弹出一个自定义命令按钮的 MessageDialog private async void btnShowMessageDialogCustomCommand_Click(object sender, RoutedEventArgs e) { MessageDialog messageDialog = new MessageDialog("内容", "标题"); messageDialog.Commands.Add ( new UICommand ( "自定义命令按钮1", (command) => { lblMsg.Text = string.Format("command label:{0}, id:{1}", command.Label, command.Id); }, "param1" ) ); messageDialog.Commands.Add ( new UICommand ( "自定义命令按钮2", (command) => { lblMsg.Text = string.Format("command label:{0}, id:{1}", command.Label, command.Id); }, "param2" ) ); messageDialog.Commands.Add ( new UICommand ( "自定义命令按钮3", (command) => { lblMsg.Text = string.Format("command label:{0}, id:{1}", command.Label, command.Id); }, "param3" ) ); messageDialog.DefaultCommandIndex = 0; // 按“enter”键后,激发第 1 个命令 messageDialog.CancelCommandIndex = 2; // 按“esc”键后,激发第 3 个命令 messageDialog.Options = MessageDialogOptions.AcceptUserInputAfterDelay; // 对话框弹出后,短时间内禁止用户单击命令按钮,以防止用户的误操作 // 显示对话框,并返回用户激发的命令 IUICommand chosenCommand = await messageDialog.ShowAsync(); lblMsg.Text += Environment.NewLine; lblMsg.Text += string.Format("result label:{0}, id:{1}", chosenCommand.Label, chosenCommand.Id); } } }
2、ContentDialog 的示例
Controls/FlyoutControl/CustomContentDialog.xaml
<ContentDialog x:Class="Windows10.Controls.FlyoutControl.CustomContentDialog" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:local="using:Windows10.Controls.FlyoutControl" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" mc:Ignorable="d" Title="custom dialog title" PrimaryButtonText="primary button" SecondaryButtonText="secondary button" PrimaryButtonClick="ContentDialog_PrimaryButtonClick" SecondaryButtonClick="ContentDialog_SecondaryButtonClick"> <!--以下为自定义对话框的标题--> <ContentDialog.TitleTemplate> <DataTemplate> <TextBlock Text="custom dialog title" Foreground="Red" /> </DataTemplate> </ContentDialog.TitleTemplate> <!--以下为自定义对话框的内容--> <StackPanel VerticalAlignment="Stretch" HorizontalAlignment="Stretch"> <TextBox Name="email" Header="Email address"/> <PasswordBox Name="password" Header="Password"/> <CheckBox Name="showPassword" Content="Show password"/> <TextBlock Name="body" TextWrapping="Wrap"> <TextBlock.Text> content content content content content content content content content content content content content content </TextBlock.Text> </TextBlock> </StackPanel> </ContentDialog>
Controls/FlyoutControl/CustomContentDialog.xaml.cs
/* * 自定义 ContentDialog */ using System.Threading.Tasks; using Windows.UI.Xaml.Controls; namespace Windows10.Controls.FlyoutControl { public sealed partial class CustomContentDialog : ContentDialog { public CustomContentDialog() { this.InitializeComponent(); } // 用户点击了第一个按钮 private async void ContentDialog_PrimaryButtonClick(ContentDialog sender, ContentDialogButtonClickEventArgs args) { // 通过 GetDeferral() 来等待长时任务,否则即使 await 了也不会等 ContentDialogButtonClickDeferral deferral = args.GetDeferral(); try { await Task.Delay(1); } finally { // 完成异步操作 deferral.Complete(); } // 使此事件可以冒泡(当然 args.Cancel 默认就是 false) args.Cancel = false; } // 用户点击了第二个按钮 private async void ContentDialog_SecondaryButtonClick(ContentDialog sender, ContentDialogButtonClickEventArgs args) { // 通过 GetDeferral() 来等待长时任务,否则即使 await 了也不会等 ContentDialogButtonClickDeferral deferral = args.GetDeferral(); try { await Task.Delay(1); } finally { // 完成异步操作 deferral.Complete(); } // 使此事件可以冒泡(当然 args.Cancel 默认就是 false) args.Cancel = false; } } }
Controls/FlyoutControl/ContentDialogDemo.xaml
<Page x:Class="Windows10.Controls.FlyoutControl.ContentDialogDemo" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:local="using:Windows10.Controls.FlyoutControl" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" mc:Ignorable="d"> <Grid Background="Transparent"> <StackPanel Margin="10 0 10 10"> <Button Name="btnShowDialog" Margin="5" Content="弹出一个标准的对话框" Click="btnShowDialog_Click" /> <Button Name="btnShowCustomDialog" Margin="5" Content="弹出一个自定义的对话框" Click="btnShowCustomDialog_Click" /> <TextBlock Name="lblMsg" Margin="5" /> </StackPanel> </Grid> </Page>
Controls/FlyoutControl/ContentDialogDemo.xaml.cs
/* * ContentDialog - 内容对话框(继承自 ContentControl, 请参见 /Controls/BaseControl/ContentControlDemo/) * FullSizeDesired - 是否全屏弹出对话框 * Title, TitleTemplate - 对话框的标题(可以自定义样式) * Content, ContentTemplate - 对话框的内容(可以自定义样式) * PrimaryButtonText - 对话框第一个按钮显示的文本 * SecondaryButtonText - 对话框第二个按钮显示的文本 * PrimaryButtonCommand, PrimaryButtonCommandParameter, SecondaryButtonCommand, SecondaryButtonCommandParameter - 按钮命令及命令参数 * * PrimaryButtonClick - 第一个按钮按下时触发的事件 * SecondaryButtonClick - 第二个按钮按下时触发的事件 * Closed, Closing, Opened - 顾名思义的一些事件 * * ShowAsync() - 弹出对话框 * Hide() - 隐藏对话框 * * * 注意:自定义的内容对话框参见 CustomContentDialog.xaml */ using System; using Windows.UI.Xaml; using Windows.UI.Xaml.Controls; namespace Windows10.Controls.FlyoutControl { public sealed partial class ContentDialogDemo : Page { public ContentDialogDemo() { this.InitializeComponent(); } private async void btnShowDialog_Click(object sender, RoutedEventArgs e) { ContentDialog dialog = new ContentDialog() { Title = "dialog title", Content = "dialog content, dialog content, dialog content, dialog content, dialog content, dialog content, dialog content", FullSizeDesired = true, PrimaryButtonText = "PrimaryButton", SecondaryButtonText = "SecondaryButton" }; dialog.PrimaryButtonClick += dialog_PrimaryButtonClick; dialog.SecondaryButtonClick += dialog_SecondaryButtonClick; // 弹出对话框,返回值为用户的选择结果 /* * ContentDialogResult.Primary - 用户选择了第一个按钮 * ContentDialogResult.Secondary - 用户选择了第二个按钮 * ContentDialogResult.None - 用户没有选择(按了系统的“返回”按钮) */ ContentDialogResult result = await dialog.ShowAsync(); if (result == ContentDialogResult.Primary) { lblMsg.Text += "选择了第一个按钮"; lblMsg.Text += Environment.NewLine; } else if (result == ContentDialogResult.Secondary) { lblMsg.Text += "选择了第二个按钮"; lblMsg.Text += Environment.NewLine; } else if (result == ContentDialogResult.None) { lblMsg.Text += "没有选择按钮"; lblMsg.Text += Environment.NewLine; } } void dialog_PrimaryButtonClick(ContentDialog sender, ContentDialogButtonClickEventArgs args) { lblMsg.Text += "点击了第一个按钮"; lblMsg.Text += Environment.NewLine; } void dialog_SecondaryButtonClick(ContentDialog sender, ContentDialogButtonClickEventArgs args) { lblMsg.Text += "点击了第二个按钮"; lblMsg.Text += Environment.NewLine; } // 弹出自定义对话框 async private void btnShowCustomDialog_Click(object sender, RoutedEventArgs e) { // 实例化自定义对话框 CustomContentDialog contentDialog = new CustomContentDialog(); // 弹出对话框,返回值为用户的选择结果 /* * ContentDialogResult.Primary - 用户选择了第一个按钮 * ContentDialogResult.Secondary - 用户选择了第二个按钮 * ContentDialogResult.None - 用户没有选择(按了系统的“返回”按钮) */ ContentDialogResult result = await contentDialog.ShowAsync(); if (result == ContentDialogResult.Primary) { lblMsg.Text += "选择了第一个按钮"; lblMsg.Text += Environment.NewLine; } else if (result == ContentDialogResult.Secondary) { lblMsg.Text += "选择了第二个按钮"; lblMsg.Text += Environment.NewLine; } else if (result == ContentDialogResult.None) { lblMsg.Text += "没有选择按钮"; lblMsg.Text += Environment.NewLine; } } } }
OK
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