RadGridView Binding Backgound Colors etc Not working

[stevea]

I have an application where I am trying to do some custom validation. I run some semi-complex rules and update a property IsValid  which I bind to a background property of a GridViewDataColumn.

I bind the grid  Datasource in a code behind to a QueryableCollectionView  based on an  Observable collection of "MyModel" , all columns bind correctly.
If I manually set the background color in Xaml, to Red obviously it turns red. The binding I show below does not work

Background="{Binding Path=IsValid, Converter={StaticResource cc}}" >  and Background="{Binding IsValid, Converter={StaticResource cc}}" >.

Some sample source


Grid Xaml

01.<telerik:RadGridView telerik:StyleManager.Theme="Office_Blue"  x:Name="RadGridView1"

02.   Grid.Row="1"

03.   GroupRenderMode="Flat"

04.   ShowGroupPanel="False"

05.   Height="500"

06.   Width="1000"

07.   ColumnWidth="*"

08.   AutoGenerateColumns="False"

09.   HorizontalAlignment="Center"

10.   VerticalAlignment="Top"

11.   CanUserFreezeColumns="False"

12.   RowIndicatorVisibility="Collapsed"

13.   ItemsSource="{Binding  }"

14.   NewRowPosition="Top"

15.   AddingNewDataItem="RadGridView1_AddingNewDataItem"

16.   RowEditEnded="RadGridView1_RowEditEnded">

17.<telerik:RadGridView.Resources>

18.    <Converters:ColorConverter x:Key="cc" />

19.</telerik:RadGridView.Resources>
.... More grid Code

Column Xaml

1.<telerik:GridViewDataColumn Header="MyColumn"
2.    DataMemberBinding="{Binding Inventory.ChrStart, Mode=TwoWay}"
3.    Width="*"
4.    Background="{Binding Path=IsValid, Converter={StaticResource cc}}" >
5.</telerik:GridViewDataColumn>

Converter Code:

01.public class ColorConverter : IValueConverter
02.    {
03.        public object Convert(object value,
04.         Type targetType,
05.         object parameter,
06.         CultureInfo culture)
07.        {
08.            bool cellIsValid = ((int)value==0?false:true);
09.            if (!cellIsValid)
10.            {
11.                return new SolidColorBrush(Colors.Red);
12.            }
13.            else
14.            {
15.                return new SolidColorBrush(Colors.Transparent);
16.            }
17.        }
18.
19.        public object ConvertBack(object value,
20.      Type targetType,
21.      object parameter,
22.      CultureInfo culture)
23.        {
24.            throw new NotImplementedException();
25.           // return new SolidColorBrush(Colors.Red);
26.        }
27.    }

Model class

01.public class MyModel : INotifyPropertyChanged

02.    {      

03. int _isvalid;

04.        public int IsValid

05.        {

06.            get

07.            {

08.                return _isvalid;

09.            }

10.            set

11.            {

12.                if (_isvalid != value)

13.                {

14.                    _isvalid = value;

15.                    OnPropertyChanged("IsValid");

16.                }

17.            }
  18.          ... Other properties etc

19.        }
 
  20.

21.}

gdgdfg

[stevea]

Controls are version 2014.1.331.1050

[Dimitrina]

Hello,

I tested the code snippet and as it turns out the Converter is only called initially. The Background is not reevaluated as I am changing the value of the IsValid property at runtime. 

May I ask you what is the final result you would like to achieve? Why do you need to set the Background with Binding?

Regards,
Didie
Telerik

 

 

[stevea]

The background needs to be set with a binding, because when a value changes, the cell color must change.

[Yoan]

Hello,

In this case, you can work with CellStyleSelector as demonstrated in this online demo. Please check the 
CellStyleSelector help article for a reference.

Regards,
Yoan
Telerik