我目前正在使用rightFax应用程序，我希望即使在数据刷新后也会保持所选行的突出显示，网格每分钟刷新一次数据，何时会丢失突出显示的行。有什么方法可以保持突出显示的行？
请帮助我谢谢
<Grid>
<Toolkit:BusyIndicator IsBusy="{Binding IsBusy}">
<Grid>
<DataGrid x:Name="dg_Faxes" AutoGenerateColumns="False" MinHeight="100" MinWidth="100" Margin="5" SelectedItem="{Binding SelectedFax}"
SelectionUnit="FullRow" CanUserAddRows="False" HorizontalAlignment="Stretch" ItemsSource="{Binding Faxes}"
GridLinesVisibility="Horizontal" IsSynchronizedWithCurrentItem="True" Sorting="dg_Faxes_Sorting"
HeadersVisibility="Column" SelectedValuePath="{Binding Path=Handle}">
<DataGrid.ContextMenu>
<ContextMenu IsOpen="{Binding IsContextOpened}">
<MenuItem Header="View Fax Image" Command="{Binding ViewFaxCommand}"></MenuItem>
<MenuItem Header="Submit For Process" Command="{Binding SubmitFaxCommand}"></MenuItem>
<!--<MenuItem Header="Clear Comments" Command="{Binding ClearCommentsCommand}"></MenuItem>-->
</ContextMenu>
</DataGrid.ContextMenu>
<DataGrid.Columns>
<DataGridTextColumn Header="Date/Time" MinWidth="100" CanUserSort="True" SortMemberPath="FaxRecordDateTime"
Binding="{Binding Path=FaxRecordDateTime, StringFormat={}\{0:MMM dd\,\ yyyy hh:mm:ss tt\}}" IsReadOnly="True" >
<DataGridTextColumn.ElementStyle>
<Style TargetType="TextBlock">
<Setter Property="VerticalAlignment" Value="Center"></Setter>
<Setter Property="HorizontalAlignment" Value="Center"></Setter>
</Style>
</DataGridTextColumn.ElementStyle>
</DataGridTextColumn>
<!--<DataGridTextColumn Binding="{Binding Path=FaxFilename}" Header="Name" CanUserSort="True" SortMemberPath="FaxFilename">
</DataGridTextColumn>-->
<DataGridTextColumn Header="Pages" CanUserSort="True" SortMemberPath="TotalPages"
Binding="{Binding Path=TotalPages}" IsReadOnly="True">
<DataGridTextColumn.ElementStyle>
<Style TargetType="TextBlock">
<Setter Property="VerticalAlignment" Value="Center"></Setter>
<Setter Property="HorizontalAlignment" Value="Center"></Setter>
</Style>
</DataGridTextColumn.ElementStyle>
</DataGridTextColumn>
<DataGridTemplateColumn CanUserSort="True" SortMemberPath="IsPrinted" IsReadOnly="True" >
<DataGridTemplateColumn.HeaderTemplate>
<DataTemplate>
<Image Width="25" x:Name="IMG">
<Image.Source>
<BitmapImage DecodePixelWidth="25"
UriSource="../Icons/printer.png"></BitmapImage>
</Image.Source>
<Image.ToolTip>
<ToolTip>
<StackPanel>
<TextBlock FontWeight="Bold">Is Printed Column</TextBlock>
<TextBlock>Indicates Where A Document Has Been Printed</TextBlock>
</StackPanel>
</ToolTip>
</Image.ToolTip>
</Image>
</DataTemplate>
</DataGridTemplateColumn.HeaderTemplate>
<DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<Image Width="20" x:Name="IMG">
<Image.Source>
<BitmapImage DecodePixelWidth="20"
UriSource="../Icons/printer.png"></BitmapImage>
</Image.Source>
</Image>
<DataTemplate.Triggers>
<DataTrigger Binding="{Binding Path=IsPrinted}" Value="False">
<Setter Property="Visibility" Value="Hidden" TargetName="IMG"></Setter>
</DataTrigger>
</DataTemplate.Triggers>
</DataTemplate>
</DataGridTemplateColumn.CellTemplate>
</DataGridTemplateColumn>
<DataGridTemplateColumn CanUserSort="True" SortMemberPath="IsViewed" IsReadOnly="True">
<DataGridTemplateColumn.HeaderTemplate>
<DataTemplate>
<Image Width="25" x:Name="IMG">
<Image.Source>
<BitmapImage DecodePixelWidth="25"
UriSource="../Icons/eyeIcon.png"></BitmapImage>
</Image.Source>
<Image.ToolTip>
<ToolTip>
<StackPanel>
<TextBlock FontWeight="Bold">Is Viewed Column</TextBlock>
<TextBlock>Indicates Where A Document Has Been Viewed</TextBlock>
</StackPanel>
</ToolTip>
</Image.ToolTip>
</Image>
</DataTemplate>
</DataGridTemplateColumn.HeaderTemplate>
<DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<Image Width="20" x:Name="IMG">
<Image.Source>
<BitmapImage DecodePixelWidth="20"
UriSource="../Icons/eyeIcon.png"></BitmapImage>
</Image.Source>
</Image>
<DataTemplate.Triggers>
<DataTrigger Binding="{Binding Path=IsViewed}" Value="False">
<Setter Property="Visibility" Value="Hidden" TargetName="IMG"></Setter>
</DataTrigger>
</DataTemplate.Triggers>
</DataTemplate>
</DataGridTemplateColumn.CellTemplate>
</DataGridTemplateColumn>
<!--<DataGridTextColumn Header="IsPrinted" CanUserSort="True" SortMemberPath="IsPrinted"
Binding="{Binding Path=IsPrinted}" IsReadOnly="True" >
</DataGridTextColumn>-->
<!--<DataGridTextColumn Header="IsDeleted" CanUserSort="True" SortMemberPath="IsDeleted"
Binding="{Binding Path=IsDeleted}" IsReadOnly="True" >
</DataGridTextColumn>-->
<!--<DataGridTextColumn Header="IsApproved" CanUserSort="True" SortMemberPath="IsApproved"
Binding="{Binding Path=IsApproved}" IsReadOnly="True" >
</DataGridTextColumn>-->
<!--<DataGridTextColumn Header="IsViewed" CanUserSort="True" SortMemberPath="IsViewed"
Binding="{Binding Path=IsViewed}" IsReadOnly="True" >
</DataGridTextColumn>-->
<DataGridTextColumn Header="Comments" CanUserSort="True" SortMemberPath="UserComments"
Binding="{Binding Path=UserComments}" IsReadOnly="True" >
<DataGridTextColumn.ElementStyle>
<Style TargetType="TextBlock">
<Setter Property="VerticalAlignment" Value="Center"></Setter>
<Setter Property="HorizontalAlignment" Value="Center"></Setter>
</Style>
</DataGridTextColumn.ElementStyle>
</DataGridTextColumn>
<!--<DataGridTextColumn Header="Status" CanUserSort="True" SortMemberPath="StatusDescription"
Binding="{Binding Path=StatusDescription}" IsReadOnly="True" >
<DataGridTextColumn.ElementStyle>
<Style TargetType="TextBlock">
<Setter Property="VerticalAlignment" Value="Center"></Setter>
<Setter Property="HorizontalAlignment" Value="Center"></Setter>
</Style>
</DataGridTextColumn.ElementStyle>
</DataGridTextColumn>-->
<DataGridTemplateColumn Header="Status" CanUserSort="True" SortMemberPath="StatusDescription" IsReadOnly="True" >
<DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal">
<Image Width="20" x:Name="IMG" Source="../Icons/Red.png"></Image>
<TextBlock Text="{Binding Path=StatusDescription}" Margin="5" VerticalAlignment="Center"></TextBlock>
</StackPanel>
<DataTemplate.Triggers>
<DataTrigger Binding="{Binding Path=StatusDescription}" Value="OK">
<Setter Property="Source" Value="../Icons/Green.png" TargetName="IMG"></Setter>
</DataTrigger>
</DataTemplate.Triggers>
</DataTemplate>
</DataGridTemplateColumn.CellTemplate>
</DataGridTemplateColumn>
</DataGrid.Columns>
</DataGrid>
<Toolkit:ChildWindow Caption="{Binding ChildName}" IsModal="True" Grid.Row="1" HorizontalContentAlignment="Center"
WindowState="{Binding ChildState}" MinWidth="300" WindowStartupLocation="Center">
<Grid>
<ContentControl
prism:RegionManager.RegionName="{x:Static Constants:RegionNames.FaxListChildRegion}"
HorizontalAlignment="Stretch"
VerticalAlignment="Stretch"
HorizontalContentAlignment="Stretch"
VerticalContentAlignment="Stretch" />
</Grid>
</Toolkit:ChildWindow>
</Grid>
</Toolkit:BusyIndicator>
</Grid>
和背后的代码
公共部分类FaxListsView：UserControl，IFaxListsView { private ListSortDirection lastSortDirection; private string lastSortMemberPath; 公共FaxListsView（） { 的InitializeComponent（）;
}
public IViewModel ViewModel
{
get
{
return (IViewModel)this.DataContext;
}
set
{
this.DataContext = value;
}
}
private void dg_Faxes_Sorting(object sender, DataGridSortingEventArgs e)
{
((IFaxListsViewModel)this.DataContext).Sorted = true;
if (e.Column.SortDirection != null && e.Column.SortDirection == ListSortDirection.Ascending)
((IFaxListsViewModel)this.DataContext).SortDirection = "Descending";
else
((IFaxListsViewModel)this.DataContext).SortDirection = "Ascending";
((IFaxListsViewModel)this.DataContext).SortColumnIndex = e.Column.DisplayIndex;
}
public void SortDataGrid(int columnIndex = 0, ListSortDirection sortDirection = ListSortDirection.Ascending)
{
lastSortDirection = sortDirection;
var column = dg_Faxes.Columns[columnIndex];
dg_Faxes.Items.SortDescriptions.Clear();
dg_Faxes.Items.SortDescriptions.Add(new SortDescription(column.SortMemberPath, sortDirection));
foreach (var col in dg_Faxes.Columns)
{
col.SortDirection = null;
}
column.SortDirection = sortDirection;
dg_Faxes.Items.Refresh();
}