how to customize the filtering in DataGridTextColumn

[alraseensaad]

How can I customize the filter in DataGridTextColumn to ignore spaces between words and Diacritics

[tom-englert]

https://github.com/dotnet/DataGridExtensions/blob/master/src%2FDataGridExtensions%2FRegexContentFilter.cs

Just build your own filter like this

[alraseensaad]

Hi tom-englert thank you for replying
I have tried it in DataGrid level and it's work but what about DataGridTextColumn level can I customize the filter too

[tom-englert]

Sure, just have a look at all the examples

[MakeGywer]

@tom-englert : Thank you for the example on how to implement custom filter logic.

I am still having trouble understanding how to use my own filter in XAML. SortedMemberPath ist the value which shall be overgiven "bool IsMatch(object value)"

I would like to use the Datagrid-Extensions "Text input filter" in a DataGridTemplateColumn but change the filter logic. I assume I also need to implement the IContentFilterFactory?

And how can I set my filter logic "LocalizedEnumFilter" in XAML for a specific DataGridTemplateColumn?

At the moment i am getting a binding null-reference exception... I think i have to create the Filter with the Factory Class, but i don´t know where I have to do this.

Or maybe this is not possilbe at all ?

Here is my Code:

namespace TcApp.Database.Measure.Local.Filter
{
    public class LocalizedEnumFilter : IContentFilter
    {
        private readonly string _filterText;

        public LocalizedEnumFilter(string filterText)
        {
            _filterText = filterText;
        }

        public bool IsMatch(object value)
        {
            if (value == null) return false;

            if (value.GetType().IsEnum)
            {
                string localizedValue = GetLocStringFromEnumType(value);            
                return localizedValue.Contains(_filterText, StringComparison.OrdinalIgnoreCase);
            }

            return false;
        }

        private string GetLocStringFromEnumType(object enumValue)
        {
           // Own Localization Enum Converting 
        }
    }

    public class LocalizedEnumFilterFactory : IContentFilterFactory
    {
        public IContentFilter Create(object content)
        {
            return new LocalizedEnumFilter(content?.ToString() ?? string.Empty);
        }
    }

}

Here is the definition in XAML in my ressource -File:

 <!--#region Datagrid-Filter für lokalisierte Enums-->
    <db_filter:LocalizedEnumFilter x:Key="LocalizedEnumFilter" />
<!--#endregion-->

and here I try to use the filter in my View :

  <DataGrid
                        Grid.Row="1"
                        CanUserReorderColumns="False"
                        ColumnHeaderStyle="{StaticResource DataGridDbUiHeaderStyle}"
                        IsReadOnly="{Binding IsViewReadOnly}"
                        ItemsSource="{Binding ItemCollection}"
                        LayoutUpdated="DataGrid_LayoutUpdated"
                        SelectedItem="{Binding ItemSelected}"
                        Style="{StaticResource DataGridDbUiCollectionStyle}">

                        <DataGrid.Columns>
                            <!--#region using LocalizedEnumFilter-->
                            <DataGridTemplateColumn x:Name="InspectionModeColumn"
                                Width="110"
                                dgx:DataGridFilterColumn.Filter="{StaticResource LocalizedEnumFilter}"
                                dgx:DataGridFilterColumn.IsFilterVisible="True"
                                HeaderStyle="{StaticResource ColumnHeaderInspectionModeStyle}"
                                SortMemberPath="InspectionMode">

                            </DataGridTemplateColumn>
                            <!--#endregion-->