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Slow performance of list view in WPF

I have a list view with a ton of data and any time I go to scroll / click somewhere on the screen it always takes a few seconds to react. I tried setting the list view to use virtualization but can't seem to get it to work.
I have tried this and this. Not sure if I am doing something wrong or not understanding how the virtualization works?
I do have a lot of styling / added grid view behaviors for my listview. If you have any suggestions please let me know!
What I Have Tried
I have tried removing the CollapseableCollumnBehavior from the list view. Had no change.
Removed all my font styles. Had no change.
Reduced the number of columns. Had a small change but still very unresponsive.
Turned off IsSyncronizedWithCurrentItem. Had no change.
Item Source
My item source is just an observable collection.This is how I load data into it.
private void LoadAllData()
{
using (var uow = _unitOfWorkFactory.Create())
{
foreach (var rule in _ruleRepository.GetAllRulesInCheckProcess())
{
AllRulesInCheckProcess.Add(rule);
}
}
}
XAML:
I took out a lot of my styling and added column behaviors from the xaml to simplify the code.
<ListView SelectedValue="{Binding SelectedRule}"
IsSynchronizedWithCurrentItem="True"
Grid.Column="0"
MinHeight="150"
VirtualizingStackPanel.IsVirtualizing="True"
VirtualizingStackPanel.VirtualizationMode="Recycling"
ScrollViewer.IsDeferredScrollingEnabled="True"
ItemsSource="{Binding AllRulesInCheckProcess}"
MaxHeight="300"
ScrollViewer.HorizontalScrollBarVisibility="Visible">
<ListView.View>
<GridView>
<GridViewColumn DisplayMemberBinding="{Binding Description}" Width="auto">
<GridViewColumnHeader Content="Description">
<GridViewColumnHeader.ContentTemplate>
<DataTemplate>
<StackPanel>
<TextBox Height="25"
FontSize="{StaticResource FontSizeSmall}"
Text="{Binding ElementName=RulesInCheckProgressPage, Path=DataContext.DescriptionFilter}"
Tag="Filter Description"/>
<TextBlock Text="Description"/>
</StackPanel>
</DataTemplate>
</GridViewColumnHeader.ContentTemplate>
</GridViewColumnHeader>
</GridViewColumn>
<GridViewColumn DisplayMemberBinding="{Binding LaunchDate,StringFormat=MM/dd/yy}"
Width="auto">
<GridViewColumnHeader Content="Launch Date">
<GridViewColumnHeader.ContentTemplate>
<DataTemplate>
<StackPanel>
<TextBox Height="25"
FontSize="{StaticResource FontSizeSmall}"
Tag="Filter Launch Date"
Text="{Binding ElementName=RulesInCheckProgressPage, Path=DataContext.LaunchDateFilter}"/>
<TextBlock Text="Launch Date"/>
</StackPanel>
</DataTemplate>
</GridViewColumnHeader.ContentTemplate>
</GridViewColumnHeader>
</GridViewColumn>
<GridViewColumn DisplayMemberBinding="{Binding AddedDate,StringFormat=MM/dd/yy}" Width="auto">
<GridViewColumnHeader Content="Added Date">
<GridViewColumnHeader.ContentTemplate>
<DataTemplate>
<StackPanel>
<TextBox Height="25"
FontSize="{StaticResource FontSizeSmall}" Tag="Filter Added Date"
Text="{Binding ElementName=RulesInCheckProgressPage, Path=DataContext.AddedDateFilter}"/>
<TextBlock Text="Added Date"/>
</StackPanel>
</DataTemplate>
</GridViewColumnHeader.ContentTemplate>
</GridViewColumnHeader>
</GridViewColumn>
</GridView>
</ListView.View>
UPDATE
So through doing some more research it appears I may need to take a look at data virtualization instead of UI virtualization. Does anyone know of any up to date data virtualization code?

WPF ListView - 2 dimensions with 1 same structure

We are working on a ListView (C# WPF) and we didn't found how bind a list of items in columns, with each item containing itself a list of items with the same columns.
Let's illustre this in an example :
!
We got an observable collection on objects with parameters (name, etc.) and each object contain another observable collection of objects with the sames parameters (exept they haven't a list). So we want to list it in a ListView but we can't figure how !
We do not know enough ListView to implement this structure, some advices ?
Thanks in advance

I think the best way is :
XAML :
<Window.Resources>
<DataTemplate x:Key="gridViewSecondCellTemplate1">
<StackPanel Width="100">
<TextBlock Text="{Binding Content}" FontSize="15" />
</StackPanel>
</DataTemplate>
<DataTemplate x:Key="gridViewCellTemplate1">
<StackPanel Width="100">
<TextBlock Text="{Binding Title}" FontSize="15" />
<ListView ItemsSource="{Binding MySecondSource}>
<ListView.View>
<GridView>
<GridViewColumn Header="{Binding Subtitle}" CellTemplate="{StaticResource gridViewSecondCellTemplate1}"/>
</GridView>
</ListView.View>
</ListView>
</StackPanel>
</DataTemplate>
</Window.Resources>
<ListView ItemsSource="{Binding MySource}">
<ListView.View>
<GridView>
<GridViewColumn Header="Col 1" Width="100" CellTemplate="{StaticResource gridViewCellTemplate1}"/>
</GridView>
</ListView.View>
</ListView>
I didn't try this code. Try it, and say me if it is OK.

Within a ListView - GridViewColumn change content based on ComboBox Selection

I am struggling trying to understand how I can allow a user to select a value from a combo box in a GridView column and have that selection impact other items within that GridView column (Labels, Textbox, etc). If they simply select an item from the combo box I don't appear to have the selected item / index from the ListView nor do I have the GridViewColumn so I can access its contents...This is most likely user error as I am new to WPF. Any suggestions would be greatly appreciated.
So in the xaml below I want to be able (for example) change the Label content for a given combo box selection. I can detect the combo box selection in code behind, but need to be able to access the other elements in that grid view column.
EDIT: ListView could be the wrong choice to begin with. I tried DataGrid as well, but this seemed to allow more flexibility within the columns for dynamic content.
Xaml:
<Grid x:Name="GridWindows" DockPanel.Dock="Bottom">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<ListView x:Name="LvValues" ItemContainerStyle="{StaticResource AlternatingListViewItemStyle}" AlternationCount="2">
<ListBox.Items>
<sys:String>Value1</sys:String>
<sys:String>Value2</sys:String>
<sys:String>Value3</sys:String>
</ListBox.Items>
<ListView.View >
<GridView>
<GridViewColumn Header="Value" Width="120" DisplayMemberBinding="{Binding}" />
<GridViewColumn Header="Terminal" Width="50">
<GridViewColumn.CellTemplate>
<DataTemplate>
<CheckBox IsChecked="False"></CheckBox>
</DataTemplate>
</GridViewColumn.CellTemplate>
</GridViewColumn>
<GridViewColumn Header="Distribution" Width="400" x:Name="Distribution">
<GridViewColumn.CellTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal">
<ComboBox Width="100" x:Name="CbDistribution" SelectedValuePath="Content" SelectionChanged="CbDistribution_OnSelectionChanged">
<ComboBoxItem x:Name="Beta">Beta</ComboBoxItem>
<ComboBoxItem x:Name="Constant">Constant</ComboBoxItem>
<ComboBoxItem x:Name="Gamma">Gamma</ComboBoxItem>
</ComboBox>
<Label x:Name="DistributionArg1" Content="k="></Label>
<Label x:Name="DistributionArg2" Content="Theta="></Label>
<Label x:Name="DistributionArg3" Content="Other="></Label>
</StackPanel>
</DataTemplate>
</GridViewColumn.CellTemplate>
</GridViewColumn>
</GridView>
</ListView.View>
</ListView>
</Grid>

getting the Mouseover Event on listview in wpf

I had created the listview in below manner
using grid view init;
i need that when mouseover on the gridview item i need to get that username details in the popup window , i am able to generate the popupwindow
except that Hover username in the listview
this is my sample code so please try to provide this information
<ListView AlternationCount="2" removed="#FFB6CCD8" Canvas.Left="15" Canvas.Top="77" FontSize="13" Height="43" IsSynchronizedWithCurrentItem="True" ItemContainerStyle="{DynamicResource ListViewItemContainerStyle}" ItemsSource="{Binding}" Name="checkedListView1" SelectionMode="Single" TabIndex="2" Width="269" ItemTemplate="{StaticResource ItemDataTemplate}"
SelectionChanged="checkedListView_SelectionChanged" MouseEnter="checkedListView1_MouseEnter" MouseMove="checkedListView1_MouseMove">
<ListView.View>
<GridView>
<GridViewColumn DisplayMemberBinding="{Binding Path=empid}" Header="CardID" Width="1" />
<GridViewColumn DisplayMemberBinding="{Binding Path=username}" Width="200" />
<GridViewColumn >
<GridViewColumn.CellTemplate>
<DataTemplate>
<Image Source="/WPF.Themes.Demo;component/Images/Status-user-online.ico" Width="20" Height="20"></Image>
</DataTemplate>
</GridViewColumn.CellTemplate>
</GridViewColumn>
</GridView>
</ListView.View>
</ListView>
here i am using the listview in the Gridview manner , so please try to provide the Information to get the Username which was presented in the Gridviewcolumn when mouse cursor Hover in the listview
Thank you.

Checkbox in gridviewcolumn(header)

I am using a listview (gridview/gridviewcolumn)
where the first column
contains only checkboxes for each row. Instead of adding a select all button I want
to add a Checkbox into the header of the first column.
Selecting the checkbox in the header will select
all other checkboxes and vice versa.
How can I do that in xaml?
Update:
This is the important part of my xaml code. (simplified)
<ListView ItemSource="...">
<ListView.View>
<GridView>
<GridViewColumn>
<GridViewColumn.CellTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal">
<CheckBox IsChecked="{Binding IsSelected}" />
</StackPanel>
</DataTemplate>
</GridViewColumn.CellTemplate>
</GridViewColumn>
</GridView>
</ListView.View>
</ListView>

To have a checkbox on top of GridViewColumn you can do something like this
<GridViewColumn>
<GridViewColumn.Header>
<CheckBox/>
</GridViewColumn.Header>
<GridViewColumn.CellTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal">
<CheckBox IsChecked="{Binding IsSelected}" />
</StackPanel>
</DataTemplate>
</GridViewColumn.CellTemplate>
</GridViewColumn>
Now you can handle the check event and in the code you can iterate through your itemsSource and change values or if you are following MVVM you can bind property with checkbox so that whenever check is changed you will be notified through INotifyPropertyChanged. Once you find out through binding that check has changed, again you can change your itemssource accordingly