DataGrid entry highlight on change

Hello Ivan,
First it would be preferred to have more accurate highlighting, but the it needs to be accurate and simple.  When the product is finished there will be more than 30 DxGrids with some having as many as 50 fields.  By my understanding, the proposal is to double the number of fields and using 1 field for the value and 1 for the highlighting information.  Not only is the number of data elements doubled, but then the XAML is made much more complex.  If there is a easier way to get the higher quality highlighting, I would be very interested.  However, if it is not too hard, I would like to start with getting the Binding.TargetUpdated working first.
Regards,
Bryce

Before I started implementing animation as with Binding.TargetUpdated, let me show you another approach. It seems to be much simpler than the first one, because you don't need to modify your data source. Please take a look at the attached example. I have combined the approach we used in the A general approach to highlighting specific grid cells example with a grid that handles changes for all data source objects.
Let me know if this approach meets your requirements.

Hello Ivan,
I spent time today looking at the code.  I do not understand it all yet, but the idea of adding the ability to the DxGrid to do the highlighting is perfect.  The behavior of the example is not correct yet.Also I tried to see how this might behave in my application, but I could not get it to work today.  I will try again tomorrow.  Is there any suggestions you offer regarding what I might be doing wrong?
Bryce

Please check that you replaced your GridControl with a custom descendant and copied the CellStyle.
As for my sample, as far as I understand, you mean that there is no flashing animation in it. You can implement it by using a DataTrigger that raises a Storyboard. I have modified my sample accordingly. Please find it in the attachment.

Hello Ivan,
I debugged and fixed the problems in my code.  At this moment I have many of my grids with the SolidHighLight working.  I have not started the FlashingHighLight behavior yet.  The SolidHighLight grid is exactly what was needed so far :-)  One additional question is how I could specify the SolidColor as a XAML binding?  I will work on the flash behavior next week.
Regards,
Bryce

Hi Bryce,
I suggest that you add a custom DependencyProperty to the custom GridControl and use this property in the MyGridControl_PropertyChanged method:

C#
public class MyGridControl : DevExpress.Xpf.Grid.GridControl {  
    public Color HighlightColor {  
        get { return (Color)GetValue(HighlightColorProperty); }  
        set { SetValue(HighlightColorProperty, value); }  
    }  
    public static readonly DependencyProperty HighlightColorProperty =  
        DependencyProperty.Register("HighlightColor", typeof(Color), typeof(MyGridControl), new PropertyMetadata(Colors.Red));  

    .......  

    void MyGridControl_PropertyChanged(object sender, PropertyChangedEventArgs e) {  
        var old = CellsHightlightHelper.GetCellsToHighlight(this);  
        ObservableCollection<HighlightedGridCell> cellsToHiglight = old == null ? new ObservableCollection<HighlightedGridCell>() : new ObservableCollection<HighlightedGridCell>(old);  
        cellsToHiglight.Add(new HighlightedGridCell(sender, Columns[e.PropertyName], HighlightColor));  
        CellsHightlightHelper.SetCellsToHighlight(this, cellsToHiglight);  
    }  
}  

XAML
<local1:MyGridControl ... HighlightColor="Blue">  

<MultiBinding Converter="{StaticResource converter}">  
    <Binding Path="(local:CellsHightlightHelper.CellsToHighlight)" RelativeSource="{RelativeSource AncestorType=dxg:GridControl}"/>  
    <Binding Path="RowData.Row"/>  
    <Binding Path="Column"/>  
    <Binding Path="Value"/>  
    <Binding Path="View.DataControl.HighlightColor"/>  
</MultiBinding>  

Hello Support,
The Solid-HighLighting is working great.  I have the color bound properly.  I have the Flash-Highlight working with a [From="OrangeRed" To="Transparent"].  I was trying to change the OrangeRed into a "User Selected" color and have issues here.  Is there an easy way to Bind the From-Color to a ViewModel specified value?
Bryce

Hello Support,
This is nearly a duplicate of https://www.devexpress.com/Support/Center/Question/Details/T118087.  The questions are similar, and all work is getting done here.  I will Close 118087.
Bryce

Hi Bryce,

Since the animation mechanism in WPF is based on freezable objects, it does not support bindings or dynamic loading. It can be only defined statically. I am afraid I cannot suggest an appropriate way to avoid this limitation.

Hello Support,
Can the value be placed in a dictionary or does it really need to be a pure constant?
Bryce

Hi Bryce,

You can place the required value into a dictionary. However, in this case, it is possible to use such a resource only in static mode. Since Animation is initiated, its values become frozen and cannot be modified. Thus, even if you try to use DynamicResource, it will not affect Animation properties.

Regards,
Alex

Hi Alexander,
I wanted to ask a clarifying question.  I understand that once Animation has started, the values cannot change.  Is it possible to have the values change between Animations (one animation uses 1 color, then later in time the animation uses a different color?
Regards,
Bryce

Hi Bruce,

As Alexander previously said, since Animation is initiated, its values cannot be modified. Animation is initialized once the application starts. So, I think there is no appropriate way to change it between moments when the trigger fires.

Since the issue is not directly related to our controls, I am not sure what an appropriate way to customize Animation at runtime is. Please address your inquiry to the MSDN Forum.