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背水一战 Windows 10 (37) - 控件(弹出类): MessageDialog, ContentDialog

Posted on 2016-09-28 08:39 webabcd 阅读(...) 评论(...) 编辑 收藏

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背水一战 Windows 10 (37) - 控件(弹出类): MessageDialog, ContentDialog



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;
            }
        }
    }
}



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[源码下载]