小编Chu*_*are的帖子

我有电视连续剧项目,我正在使用mediaelement.但我需要帮助寻求酒吧.如何添加？如何制作像MediaPlayerLauncher一样的搜索栏滑块？

我试着这样想:

<Grid x:Name="LayoutRoot" Background="Transparent">
    <Grid.RowDefinitions>
        <RowDefinition Height="Auto"/>
        <RowDefinition Height="*"/>
    </Grid.RowDefinitions>

    <!--TitlePanel contains the name of the application and page title-->

    <!--ContentPanel - place additional content here-->
    <Grid x:Name="ContentPanel" Grid.Row="1" Margin="12,0,12,0">
        <MediaElement x:Name="player1" MediaOpened="player1_MediaOpened" CurrentStateChanged="player1_CurrentStateChanged" />
        <ListBox x:Name="alternatifliste" FontSize="20" FontStyle="Italic" FontWeight="Bold" Foreground="White" Margin="677,98,10,153" SelectionChanged="alternatifliste_SelectionChanged" />

    </Grid>

    <Button x:Name="play" Content="play" HorizontalAlignment="Left" Margin="94,336,0,0" Grid.Row="1" VerticalAlignment="Top" Click="play_Click"/>
    <Button x:Name="stop" Content="stop" HorizontalAlignment="Left" Margin="331,336,0,0" Grid.Row="1" VerticalAlignment="Top" Click="stop_Click"/>
    <Slider Name="timelineSlider"  Margin="0,68,0,244" Grid.Row="1" ValueChanged="timelineSlider_ValueChanged" />
</Grid>

我的项目:

İts代码:

private void player1_MediaOpened(object sender, RoutedEventArgs e)
{
    TimeSpan ts …

我试图使用以下示例实现无限滚动

http://www.davidbritch.com/2014/05/data-virtualisation-using.html

问题是在我的情况下,LoadMoreItemsAsync不断被无休止地调用.我正在集线器上开发这个(不确定这是否有所不同)并使用MVVMLight.以下是我的代码

的.xaml

<Page
x:Class="MyFileServer.UniversalApp.AppHubPage"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="using:MyFileServer.UniversalApp"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d"
Background="{ThemeResource ApplicationPageBackgroundThemeBrush}"
DataContext="{Binding Source={StaticResource MFSViewModelLocator}, Path=AppHub}">

<Grid>
    <Hub Header="My File Server">
        <HubSection x:Name="MFSNotifications" Header="Notifications">
            <DataTemplate>
                <StackPanel>
                    <ListView x:Name="Notifications"  ItemsSource="{Binding IncrementalNotifications}" >
                        <ListView.ItemTemplate>
                            <DataTemplate>
                                <TextBlock Text="{Binding NotificationDescription}"/>
                            </DataTemplate>
                        </ListView.ItemTemplate>
                    </ListView>
                </StackPanel>
            </DataTemplate>
        </HubSection>
        <HubSection x:Name="MFSFiles" Header="Files"></HubSection>
    </Hub>
</Grid>

下面给出了我的ISupportIncrementalLoading实现

public class IncrementalLoadingNotificationsCollection : ObservableCollection<MFSNotificationModel>, ISupportIncrementalLoading
{
    private INotificationService _notificationService;
    public IncrementalLoadingNotificationsCollection(INotificationService notificationService)
    {
        HasMoreItems = true;
        _notificationService = notificationService;
    }


    public bool HasMoreItems
    {
        get;
        private set; …

在我的Windows Phone 8.1应用程序中,我想获取当前页面类型,如果它与我的检查匹配以刷新该页面.怎么做？这不起作用:

Frame rootFrame = Window.Current.Content as Frame;

我正在尝试将应用程序从Windows Phone Silverlight 8.0升级到8.1.当我尝试访问8.1上的"Assets"文件夹时,我遇到了异常.我能够在一个示例项目中重现这一点,该项目在定位8.0时工作正常,但在升级到8.1时会产生异常.

以下是示例应用程序MainPage的XAML:

<phone:PhoneApplicationPage
    x:Class="PhoneApp1.MainPage"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:phone="clr-namespace:Microsoft.Phone.Controls;assembly=Microsoft.Phone"
    xmlns:shell="clr-namespace:Microsoft.Phone.Shell;assembly=Microsoft.Phone"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    mc:Ignorable="d"
    FontFamily="{StaticResource PhoneFontFamilyNormal}"
    FontSize="{StaticResource PhoneFontSizeNormal}"
    Foreground="{StaticResource PhoneForegroundBrush}"
    SupportedOrientations="Portrait" Orientation="Portrait"
    shell:SystemTray.IsVisible="True">

    <Grid x:Name="LayoutRoot" Background="Transparent">
        <Grid.RowDefinitions>
            <RowDefinition Height="Auto"/>
            <RowDefinition Height="*"/>
        </Grid.RowDefinitions>
        <StackPanel x:Name="TitlePanel" Grid.Row="0" Margin="12,17,0,28">
            <TextBlock Text="MY APPLICATION" Style="{StaticResource PhoneTextNormalStyle}" Margin="12,0"/>
            <TextBlock Text="page name" Margin="9,-7,0,0" Style="{StaticResource PhoneTextTitle1Style}"/>
        </StackPanel>

        <Grid x:Name="ContentPanel" Grid.Row="1" Margin="12,0,12,0">
            <Button Content="Get Assets" HorizontalAlignment="Center" VerticalAlignment="Center" Click="Button_Click"/>
        </Grid>
    </Grid>

</phone:PhoneApplicationPage>

这是MainPage代码隐藏:

using System;
using System.Diagnostics;
using System.Windows;
using Microsoft.Phone.Controls;
using Windows.Storage;

namespace PhoneApp1
{
    public partial class MainPage …

这是显示数据库表中所有列和记录的 GridView：

<asp:GridView ID="GridView1" runat="server" AllowPaging="true" BackColor="White" 
        BorderColor="#CCCCCC" BorderWidth="2px" CellPadding="2" CellSpacing="5"
        ForeColor="#000066" GridLines="None">
    <RowStyle BackColor="#F7F7F7" />
    <AlternatingRowStyle BackColor="#E7E7FF" />
    <FooterStyle BackColor="White" />
    <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
    <PagerStyle BackColor="White" ForeColor="#000066" 
        HorizontalAlign="Center" />
    <SortedAscendingCellStyle BackColor="#F1F1F1" />
    <SortedAscendingHeaderStyle BackColor="#007DBB" />
    <SortedDescendingCellStyle BackColor="#CAC9C9" />
    <SortedDescendingHeaderStyle BackColor="#00547E" />
    <Columns>
        <asp:CommandField ShowSelectButton="true" HeaderStyle-ForeColor="Yellow"
            ControlStyle-ForeColor="Red" SelectText="Select" HeaderText="Select" />
    </Columns>
</asp:GridView>

背后代码：

public void ShowBooks()
{
    SqlDataAdapter da = new SqlDataAdapter("SELECT * FROM Book", con);
    DataSet ds = new DataSet();
    da.Fill(ds);
    GridView1.DataSource = ds;
    GridView1.DataBind();
}

protected …

我正在开发一款适用于Windows手机的应用程序,它主要包括手机通讯录.我正在使用Contacts类获取所有电话联系人,并且我将联系人数据存储在隔离存储中.由于我无法序列化图像,我在序列化之前将它们转换为byte [].我的代码是:

foreach (var result in e.Results)
{
    if (result.PhoneNumbers.FirstOrDefault() != null)
    {

        BitmapImage bmp2 = new BitmapImage();
        bmp2.SetSource(result.GetPicture());


        listobj.Add(new AddressBook()
           {
               FirstName = result.DisplayName ?? "",
               imageBytes = AddressBook.imageConvert(bmp2),
               EmailAddress = "",
               LastName = "",
               Phone = result.PhoneNumbers.FirstOrDefault().PhoneNumber ?? "",
           });
    }
}

当Contact没有图片时,它会在行上显示Argument null异常错误:

bmp2.SetSource(result.GetPicture());

因此,当联系人图像为null时,我想使用一些自定义图像("/Images/ci2.png"或任何空白图像也可以使用).我的xaml代码是:

<StackPanel Margin="0,0,0,2" Orientation="Horizontal">
    <StackPanel Width="80" Orientation="Horizontal" Height="80">
        <Ellipse Margin="0" Height="70" Width="70" HorizontalAlignment="Left" Stroke="{x:Null}">
            <Ellipse.Fill>
                <ImageBrush Stretch="Fill" ImageSource="{Binding imageByte, Converter={StaticResource BytesToImageConverter}}"/>
            </Ellipse.Fill>
        </Ellipse>
    </StackPanel>
    <StackPanel Height="80" Margin="0" Width="380" HorizontalAlignment="Left">
        <TextBlock FontWeight="Bold"  Text="{Binding FirstName}" …

我将计时器刻度事件设置为250毫秒:

private void timer4_Tick(object sender, EventArgs e)
{
    if (pictureboximagestosavecount == 72)
    {
        timer4.Enabled = false;
    }
    else
    {
        Bitmap bmp = new Bitmap(this.Width, this.Height);
        Rectangle rect = new Rectangle(this.Location.X, this.Location.Y, this.Width, this.Height);
        pictureboximagestosavecount++;
        savePictureBox(pictureBox1, @"c:\temp\pboximages\" + pictureboximagestosavecount.ToString("D6") + "pbimg.gif");
        this.DrawToBitmap(bmp, rect);
        bmp.Save(@"c:\temp\pboximages\" + pictureboximagestosavecount.ToString("D6") + "form.gif");
    }
}

首先,我使用savePictureBox方法将pictureBox保存为gif.其次我保存form1:

bmp.Save(@"c:\temp\pboximages\" + pictureboximagestosavecount.ToString("D6") + "form.gif");

在timer4停止后,我有一个基本点击事件,我从保存的文件中创建动画gif:

private void animatedgifbutton_Click(object sender, EventArgs e)
{
    DirectoryInfo di1;
    FileInfo[] fi1;
    di1 = new DirectoryInfo(@"c:\temp\pboximages\");
    fi1 = di1.GetFiles("*form.gif");
    List<string> newImages = new List<string>();
    for …