Progect/TaskPage.xaml

<Page x:Class="WpfApp1.TaskPage"
      xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
      xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
      xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
      xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
      xmlns:local="clr-namespace:WpfApp1"
      mc:Ignorable="d" 
      d:DesignHeight="450" d:DesignWidth="800"
      Title="TaskPage">

    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height="auto"></RowDefinition>
            <RowDefinition Height="*"></RowDefinition>
        </Grid.RowDefinitions>

            <WrapPanel Orientation="Horizontal" HorizontalAlignment="Center">
                <StackPanel Orientation="Horizontal">
                    <TextBlock Text="Введите название задания для поиска:" Width="220" TextAlignment="Right"></TextBlock>
                    <TextBox Width="221" Name="TBoxSearch" TextChanged="TBoxSearch_TextChanged"></TextBox>
                </StackPanel>
                <StackPanel Orientation="Horizontal">
                    <TextBlock Text="Выберите тип: " Width="95" TextAlignment="Right"></TextBlock>
                <ComboBox Width="225" Name="ComboType" SelectionChanged="ComboType_SelectionChanged" DisplayMemberPath="WorkType"></ComboBox>
                </StackPanel>
                <CheckBox x:Name="CheckDeleted" Checked="CheckDeleted_Checked" Unchecked="CheckDeleted_Checked" Content="Показывать только не удаленные задания" HorizontalAlignment="Center"></CheckBox>
            </WrapPanel>
        
        <ListView Grid.Row="1" Name="LViewTasks" ScrollViewer.HorizontalScrollBarVisibility="Disabled" HorizontalContentAlignment="Center">
            <ListView.ItemsPanel>
                <ItemsPanelTemplate>
                    <WrapPanel Orientation="Horizontal" HorizontalAlignment="Center"></WrapPanel>
                </ItemsPanelTemplate>
            </ListView.ItemsPanel>
            <ListView.ItemTemplate>
                <DataTemplate>
                    <Grid Margin="20" Width="400">
                        <Grid.RowDefinitions>
                            <RowDefinition Height="*"/>
                            <RowDefinition Height="*"/>
                            <RowDefinition Height="*"/>
                            <RowDefinition Height="*"/>
                        </Grid.RowDefinitions>
                        <Border BorderBrush="Black" BorderThickness="1" Background="#FF90D5FF" ></Border>
                        <StackPanel Height="300" Width="400">
                            <StackPanel>
                                <TextBlock Text="{Binding Title}" VerticalAlignment="Center" TextAlignment="Center" Width="390"  TextWrapping="Wrap" HorizontalAlignment="Center" 
                                   Margin="5 5" FontSize="26" Grid.Row="0"></TextBlock>
                                <Separator/>
                                <StackPanel>
                                    <TextBlock Text="{Binding CreateDateTime}" Margin = "5"></TextBlock>
                                    <TextBlock Text="{Binding Deadline}" Margin = "5"></TextBlock>
                                    <TextBlock Text="{Binding Time}" Margin = "5"></TextBlock>
                                    <TextBlock Text="{Binding Status}" Margin = "5"></TextBlock>
                                    <TextBlock Text="{Binding WorkType}" Margin = "5"></TextBlock>
                                    <TextBlock Text="{Binding DeletedText}" Margin = "5"></TextBlock>
                                </StackPanel>
                            </StackPanel>
                        </StackPanel>
                    </Grid>
                </DataTemplate>
            </ListView.ItemTemplate>
        </ListView>
    </Grid>
</Page>