Different Windows Phone (13)

Background Task (background Task) file transfer (upload and download)

Introduced

Unique Windows Phone 7.5 (SDK 7.1) after the task

Background File transfer (download)

Background File transfer (upload)

Example

1, demo How to implement the background file transfer (download)

Backgroundtransferdownload.xaml

<phone:phoneapplicationpage x:class= "Demo.BackgroundTask.BackgroundTransferDownload" xmlns= "http://schemas.m Icrosoft.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" fontfamily= "{StaticResource Phonefontfamilynormal} "fontsize=" {StaticResource phonefontsizenormal} "foreground=" {StaticResource PhoneForegroun Dbrush} "supportedorientations=" Portrait "orientation=" Portrait "mc:ignorable=" D "d:designheight=" 768 "D:DesignWid 
        Th= "shell:systemtray.isvisible=" "True" > <grid x:name= "layoutroot" background= "Transparent" > <stackpanel orientation= "Vertical" > &Lt Button X:name= "Btndownloadsilverlightdemo" content= "Download Silverlight Demo compression package" click= "Btndownloadsilverlightdemo_click "/> <button x:name=" Btndownloadxnademo "content=" Download XNA Demo compression package "click= Btndownloadxnademo_click"/&G 
            T <button x:name= "Btndownloadwindowsphonedemo" content= download WindowsPhone Demo compression package "click=" 
            Btndownloadwindowsphonedemo_click "/> <textblock text=" Download Task List: "margin=" 0 0 0 "/> 
                        <listbox name= "ListBox" > <ListBox.ItemTemplate> <DataTemplate>  
                                <grid margin= "0" width= "> <Grid.ColumnDefinitions>" <columndefinition width= "8*"/> <columndefiniti 
                               
                            On width= "2*"/> </Grid.ColumnDefinitions> 
          <Grid>                      <stackpanel orientation= "Vertical" > <stackpanel Orient 
                                        ation= "Horizontal" > <textblock text= "filename:"/> 
                                    <textblock text= "{Binding Tag}"/> </StackPanel> <stackpanel orientation= "Horizontal" > <textbl 
                                    Ock text= "Download status:"/> <textblock text= "{Binding transferstatus}"/> </StackPanel> <stackpanel orientation= "Horizo 
                                        Ntal "> <textblock text=" bytes Received: "/> 
                                <textblock text= "{Binding bytesreceived}"/> </StackPanel>    <stackpanel orientation= "Horizontal" > <textblock text= "total bytes:"/> 
                                    <textblock text= "{Binding totalbytestoreceive}"/> </StackPanel> </StackPanel> &L T;/grid> <grid grid.column= "1" > <button x:name= " 
                            Btncancel "tag=" {Binding RequestID} "click= Btncancel_click" content= "Delete Task" ></Button> </Grid> </Grid> </DataTemplate> </li stbox.itemtemplate> </ListBox> </StackPanel> &LT;/GRID&G 

    
T </phone:PhoneApplicationPage>