Adding DynamicResource to GridTextColumn CellStyle

[Nitish Chauhan]

The requirement is that I have a DynamicResource that sets a theme styling on the xaml, specifically on the Foreground Color of a single GridTextColumn. Because the colors of the columns differ, I need to set it on each individual column.

While this code works...

```

<syncfusion:GridTextColumn

          MappingName="FolderName">

     <syncfusion:GridTextColumn.CellStyle>

          <Style TargetType="syncfusion:GridCell">

               <Setter Property="Foreground" Value="Red" />

          </Style>

     </syncfusion:GridTextColumn.CellStyle>

</syncfusion:GridTextColumn>

```

This throws an "System.InvalidCastException: Specified cast is not valid."

```

<syncfusion:GridTextColumn

          MappingName="FolderName">

     <syncfusion:GridTextColumn.CellStyle>

          <Style TargetType="syncfusion:GridCell">

               <Setter Property="Foreground" Value="{DynamicResource OurThemedTextColor}" />

          </Style>

     </syncfusion:GridTextColumn.CellStyle>

</syncfusion:GridTextColumn>

```

The "OurThemedTextColor" comes from a ResourceDictionary and works properly on all other elements.

Is there a way to achieve this through xaml?

PS: I am trying to avoid using the DataGrid_QueryCellStyle function if possible.

[Pradeep Kumar Balakrishnan]

Hi Nitish Chauhan, 

 

Thank you using Syncfusion controls. 

 

We have checked the reported query “Application crashed with invalid cast exception when we define property to GridCell from Global resource using Style setter” we can reproduce the reported issue. Currently, we are validating the reported issue in source. We will validate and let you know the details by two business days March 2, 2021.  

 

We suggest you to use the following code to achieve the same requirement. 

<Application.Resources> 

        <ResourceDictionary> 

            <Color x:Key="Primary">Red</Color> 

        </ResourceDictionary> 

    </Application.Resources> 

 

<ContentPage.Resources> 

        <ResourceDictionary> 

            <local:GridStyleConverter x:Key="StyleConverter"/> 

        </ResourceDictionary> 

    </ContentPage.Resources> 

 

<sfgrid:SfDataGrid.Columns> 

        <sfgrid:GridTextColumn 

MappingName="OrderID"> 

            <sfgrid:GridTextColumn.CellStyle> 

                <Style TargetType="sfgrid:GridCell"> 

                    <Setter Property="Foreground" Value="{Binding ., Converter={StaticResource StyleConverter}, ConverterParameter={DynamicResource Primary}}" /> 

                </Style> 

            </sfgrid:GridTextColumn.CellStyle> 

        </sfgrid:GridTextColumn> 

    </sfgrid:SfDataGrid.Columns> 

 

public class GridStyleConverter : IValueConverter 

{ 

    public object Convert(object value, Type targetType, object parameter, CultureInfo culture) 

    { 

        if(value != null) 

        { 

            var resource = parameter as Xamarin.Forms.Internals.DynamicResource; 

            return Application.Current.Resources[resource.Key];        

        } 

 

        return Color.Black; 

    } 

 

    public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture) 

    { 

        return Color.Black; 

    } 

} 

We have also attached the sample for your reference in the following link. 

Sample 

 

Regards, 

Pradeep kumar B

[Pradeep Kumar Balakrishnan]

Hi Nitish, 

 

Thank you for your patience. 

 

We suggest you to use previously shared work around as a solution for the reported issue. Please let us know if you have any concern on this. 

 

Regards, 

Pradeep Kumar B 

[Nitish Chauhan]

Thank, this solution works!

[Karthikraja Kalaimani]

Hi Nitish,

Thanks for the update. We glad to know that your issue has been resolved. Please get in touch if you required further assistance on this. 

Regards,
Karthik Raja