problème update xml data provider

Version imprimable

Bonjour, j'ai un fichier xml qui me sert a blinder une datagrid , se fichier est updater tout les 2 secondes, pouriez vous m'aider a gérer le refresh de mon xml data provider
car j'utilise un dispatchertimer mais parfoix la datagrid clignote de manière aléatoire.
merci de votre aide.

Code:

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  public partial class Window1 : UserControl
    {
        DispatcherTimer timer1 ;
        XmlDataProvider vuze = new XmlDataProvider();
        Uri xml = new Uri("C:/Users/Vinzzz/Documents/Azureus_Stats.xml");
 
        public Window1()
        {
            timer1 = new DispatcherTimer(TimeSpan.FromSeconds(2.0), DispatcherPriority.Render,Timer1_Tick,Dispatcher.CurrentDispatcher);
 
            InitializeComponent();
            vuze.Source = xml;
            dataGrid1.DataContext = vuze;
            statusBar1.DataContext = vuze;
 
        }
       private void Timer1_Tick(object sender, EventArgs e)
       {
 
            vuze.Refresh();
 
        }

01/06/2010, 09h46
binoo

Salut,

J'avoue ne pas trop savoir... As- tu essayé de jouer avec différentes valeurs de DispatcherPriority ?
01/06/2010, 10h36
jmix90

Hello,

Cela fait quoi vuze.refresh ?

++
01/06/2010, 11h05
vinzzz34

vuze.refresh
update les données du fichier xml ( lance une relecture du fichier xml)
j'ai essayer de joué sur la priorité du dispatcher mais c pas mieux
01/06/2010, 11h10
binoo

Ok, Refresh est une méthode de vuze qui est un XmlDataProvider. Du coup, je me demande si tu ne ferais pas mieux d'utiliser l'événement DataChanged du XmlDataProvider plutôt que le DispatcherTimer.

j'ai essayer l'évenemenrt datachanged cependant il se déclenche uniquement quand je fait un vuze.refresh, il ne se déclenche malheureusement pas lorsque le fichier xml se modifie.

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  public Window1()
        {
 
            InitializeComponent();
 
            vuze.Source = xml;
 
            vuze.DataChanged += provider_DataChanged;
        }
 
        private void provider_DataChanged(object sender, EventArgs e)
        {
 
            dataGrid1.DataContext = vuze;
            statusBar1.DataContext = vuze;
 
        }

je viens de m'apercevoir que j'avait des probleme de binding dans la fenetre d'execution pouriez vous m'aidez a y remédier merci

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System.Windows.Data Error: 43 : BindingExpression with XPath cannot bind to non-XML object.; XPath='STATS/DOWNLOADS/DOWNLOAD' BindingExpression:Path=; DataItem='XmlDataCollection' (HashCode=36893756); target element is 'DataGrid' (Name='dataGrid1'); target property is 'ItemsSource' (type 'IEnumerable') XmlDataCollection:'MS.Internal.Data.XmlDataCollection'
System.Windows.Data Error: 43 : BindingExpression with XPath cannot bind to non-XML object.; XPath='/STATS/AZUREUS_VERSION' BindingExpression:Path=/; DataItem='XmlDataCollection' (HashCode=36893756); target element is 'StatusBarItem' (Name=''); target property is 'Content' (type 'Object') XmlDataCollection:'MS.Internal.Data.XmlDataCollection'
System.Windows.Data Error: 43 : BindingExpression with XPath cannot bind to non-XML object.; XPath='/STATS/GLOBAL/UPLOAD_SPEED/TEXT' BindingExpression:Path=/; DataItem='XmlDataCollection' (HashCode=36893756); target element is 'StatusBarItem' (Name=''); target property is 'Content' (type 'Object') XmlDataCollection:'MS.Internal.Data.XmlDataCollection'
System.Windows.Data Error: 43 : BindingExpression with XPath cannot bind to non-XML object.; XPath='/STATS/GLOBAL/DOWNLOAD_SPEED/TEXT' BindingExpression:Path=/; DataItem='XmlDataCollection' (HashCode=36893756); target element is 'StatusBarItem' (Name=''); target property is 'Content' (type 'Object') XmlDataCollection:'MS.Internal.Data.XmlDataCollection'

Code:

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 <Grid  >
        <my:DataGrid  RowDetailsVisibilityMode="Collapsed" VerticalAlignment="Top" AutoGenerateColumns="False" x:Name="dataGrid1" ItemsSource="{Binding XPath=STATS/DOWNLOADS/DOWNLOAD}" Width="320" Height="210" MaxColumnWidth="100">
            <my:DataGrid.Columns>
                <my:DataGridTextColumn Header="Name" Binding="{Binding Mode=OneWay, XPath=TORRENT/NAME}"/>
                <my:DataGridTextColumn Header="Status" Binding="{Binding Mode=OneWay, XPath=DOWNLOAD_STATUS}"/>
                <my:DataGridTemplateColumn Header="Done"  IsReadOnly="True" >
                    <my:DataGridTemplateColumn.CellTemplate>
                        <DataTemplate>
                            <Grid>
                                <ProgressBar BorderThickness="1" BorderBrush="#FFF0F0F0" Maximum="100" Minimum="0" Value="{Binding Mode=OneWay, XPath=COMPLETED, Converter={StaticResource COMPLETprogConverter}}" Background="White" Foreground="#FF5050FF" SmallChange="0.1">
                                </ProgressBar>
                                <TextBlock Text="{Binding Mode=OneWay, XPath=COMPLETED, Converter={StaticResource COMPLETConverter }}" TextAlignment="Center" />
                            </Grid>
                        </DataTemplate>
                    </my:DataGridTemplateColumn.CellTemplate>
                </my:DataGridTemplateColumn>
                <my:DataGridTextColumn Header="Dl-speed" Binding="{Binding Mode=OneWay, XPath=DOWNLOAD_SPEED/TEXT}"/>
                <my:DataGridTextColumn Header="Up-speed" Binding="{Binding Mode=OneWay, XPath=UPLOAD_SPEED/TEXT}"/>
                <my:DataGridTextColumn Header="Ratio" Binding="{Binding Mode=OneWay, XPath=SHARE_RATIO, Converter={StaticResource RATIOConverter}}"/>
 
 
 
            </my:DataGrid.Columns>
        </my:DataGrid>
        <StatusBar Height="30" Name="statusBar1" VerticalAlignment="Bottom"  >
            <StatusBarItem>
                <Image Source="resources/vuze.png" Width="16" Height="16" />
            </StatusBarItem>
 
            <StatusBarItem   Content="{Binding Mode=OneWay, XPath=/STATS/AZUREUS_VERSION}"/>
            <StatusBarItem>
                <Image Source="resources/Up.png" Width="13" Height="13" />
            </StatusBarItem>
            <StatusBarItem  Content="{Binding Mode=OneWay, XPath=/STATS/GLOBAL/UPLOAD_SPEED/TEXT}"/>
            <StatusBarItem>
                <Image Source="resources/Down.png" Width="13" Height="13" />
            </StatusBarItem>
            <StatusBarItem Content="{Binding Mode=OneWay, XPath=/STATS/GLOBAL/DOWNLOAD_SPEED/TEXT}"/>
        </StatusBar>
 
    </Grid>

02/06/2010, 11h22
binoo

Tu peux nous montrer à quoi ressemble le fichier xml.

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<?xml version="1.0" encoding="UTF-8"?>
<STATS>
    <AZUREUS_VERSION>4.4.0.4</AZUREUS_VERSION>
    <GLOBAL>
        <DOWNLOAD_SPEED>
            <TEXT>909 o/s</TEXT>
            <RAW>909</RAW>
        </DOWNLOAD_SPEED>
        <UPLOAD_SPEED>
            <TEXT>80,1 ko/s</TEXT>
            <RAW>81998</RAW>
        </UPLOAD_SPEED>
    </GLOBAL>
    <DOWNLOADS>
        <DOWNLOAD>
            <TORRENT>
                <NAME>Vegas Party</NAME>
                <TORRENT_FILE>C:\Users\Vinzzz\AppData\Roaming\Azureus\torrents\Vegas_Party[www.torrent411.com][1].torrent</TORRENT_FILE>
                <HASH>D6D6D678E3EDB6D16550BD9C8D2A37F2AFD359E7</HASH>
                <SIZE>
                    <TEXT>614,59 Mo</TEXT>
                    <RAW>644450482</RAW>
                </SIZE>
                <PIECE_LENGTH>1048576</PIECE_LENGTH>
                <PIECE_COUNT>615</PIECE_COUNT>
                <FILE_COUNT>18</FILE_COUNT>
                <COMMENT></COMMENT>
                <CREATED_BY>BitTorrent/6400</CREATED_BY>
                <CREATION_DATE>1275113898</CREATION_DATE>
            </TORRENT>
            <DOWNLOAD_STATUS>Downloading</DOWNLOAD_STATUS>
            <DOWNLOAD_DIR>D:\Jeux\wii &amp; GC\Vegas Party</DOWNLOAD_DIR>
            <TARGET_DIR>D:\Jeux\wii &amp; GC\Vegas Party</TARGET_DIR>
            <TRACKER_STATUS>ok</TRACKER_STATUS>
            <COMPLETED>612</COMPLETED>
            <NON_DND_COMPLETED>NO</NON_DND_COMPLETED>
            <DOWNLOADED>
                <TEXT>378,77 Mo</TEXT>
                <RAW>397170123</RAW>
            </DOWNLOADED>
            <UPLOADED>
                <TEXT>1,20 Go</TEXT>
                <RAW>1289499778</RAW>
            </UPLOADED>
            <DISCARDED>
                <TEXT>1,23 Mo</TEXT>
                <RAW>1294336</RAW>
            </DISCARDED>
            <DOWNLOAD_SPEED>
                <TEXT>755 o/s</TEXT>
                <RAW>755</RAW>
            </DOWNLOAD_SPEED>
            <UPLOAD_SPEED>
                <TEXT>12,8 ko/s</TEXT>
                <RAW>13113</RAW>
            </UPLOAD_SPEED>
            <TOTAL_SPEED>
                <TEXT>891,6 ko/s</TEXT>
                <RAW>913016</RAW>
            </TOTAL_SPEED>
            <ELAPSED>13h 41m</ELAPSED>
            <ETA>6h 41m</ETA>
            <HASH_FAILS>0</HASH_FAILS>
            <SHARE_RATIO>3257</SHARE_RATIO>
            <TOTAL_SEEDS>0</TOTAL_SEEDS>
            <TOTAL_LEECHERS>37</TOTAL_LEECHERS>
        </DOWNLOAD>
        <DOWNLOAD>

03/06/2010, 17h12
binoo

Essaie de regarder ici :
http://www.infosysblogs.com/microsof...orking_wi.html