WPF Filterable DataGrid, multi language

A DataGrid control that inherits from the base DataGrid control class and override some methods to implement filters
for each column like Excel, in automatic or custom generation.

Support for nested objects and filter persistence.

Translation of labels and formatting of dates in the following languages: Chinese(traditional and simplified), Dutch, English, French, German, Hungarian, Italian, Japanese, Polish, Russian, Spanish, Turkish.

The translations are from google translate, if you find any errors or want to add other languages, please let me know.

The Nuget package is available here.

To understand how the filter works, you can consult the article posted on CodeProject.

For operation closer to that of Excel, see the version available in the repository FilterDataGrid-Beta.
This version uses a new filtering method that is completely different from the current version or the one commonly used to filter data (as far as I know).

⚠️ Attention in version 1.2.6 you must add the global style so that the FilterDataGrid is displayed correctly, this is a bug fixed in the current version.

<Style x:Key="FilterDatagridStyle" 
BasedOn="{StaticResource {ComponentResourceKey TypeInTargetAssembly=control:FilterDataGrid, 
ResourceId=FilterDataGridStyle}}" 
TargetType="{x:Type control:FilterDataGrid}">
</Style>

How to use

• There are two ways to install :

• NuGet command : Install-Package FilterDataGrid

• Or manually add FilterDataGrid.dll as reference in your project

• Add Namespace :

    xmlns:control="http://filterdatagrid.control.com/2021"  
    or
    xmlns:control="clr-namespace:FilterDataGrid;assembly=FilterDataGrid"  

• Control

  <control:FilterDataGrid 
   FilterLanguage="English" DateFormatString="d" ShowStatusBar="True" ShowElapsedTime="False"
   ExcludeFields="lastname,age,manager" ...

• Properties

  • ShowStatusBar : displays the status bar, default : false

  • ShowElapsedTime : displays the elapsed time of filtering in status bar, default : false

  • ShowRowsCount : display the number of rows, default : false
    - If the value passed to RowHeaderWidth is greater than the calculation of the width of the column, this is the one that is used.

  • FilterLanguage : translation into available language, default : English

  • PersistentFilter : enable/disable filter persistence , default : false
    See below the detail of this feature

  • ExcludeFields : comma separated fields to exclude from filter, only works in AutoGenerateColumns mode

  • DateFormatString : date display format, default : "d"

  ⚠️ Before version 1.2.5.2, you must set the "Time" part of the DateTime fields to zero, otherwise the filter doesn't work.
  see the documentation "Standard date and time format strings"

• Custom TextColumn / CheckBoxColumn

  If you add custom columns, you must set AutoGenerateColumns="False"

  <control:FilterDataGrid.Columns>   
      <control:DataGridTextColumn     IsColumnFiltered="True" ... />
      <control:DataGridCheckBoxColumn IsColumnFiltered="True" ... />

• Custom TemplateColumn

  ⚠️ FieldName property of DataGridTemplateColumn is required

  <control:FilterDataGrid.Columns>   
      <control:DataGridTemplateColumn IsColumnFiltered="True"
                               FieldName="LastName" ... />

Global Style

You can define a global style which overrides the default style of "FilterDataGrid"
⚠️ The ComponentResourceKey is obsolete from version 1.2.7 BasedOn="{StaticResource {ComponentResourceKey TypeInTargetAssembly=control:FilterDataGrid, ResourceId=FilterDataGridStyle}}"

 <Application.Resources>
  <Style
            x:Key="FilterDatagridStyle" TargetType="{x:Type control:FilterDataGrid}">
            <Setter Property="Margin" Value="10" />
            <Setter Property="RowHeaderWidth" Value="40" />
            ...
  </Style>
 </Application.Resources>

  <!-- usage -->
  <control:FilterDataGrid Style="{StaticResource FilterDatagridStyle}" ...

Persistence of filters

Enabling the PersistentFilter property saves a json file in the application folder that contains the status of active filters, any modification of the filters is immediately saved until the closing of the application, it is this state of the filters which will be loaded during the new launch of the application.
The name of the json file is inferred from the name you give to your FilterDataGrid control.

 <control:FilterDataGrid x:Name="MyFilterDatagrid"

If it is not provided, the type name of the source collection is used, for example for a generic list of type Employees, Employees will be used

// collection used as ItemsSource
List<Employees>

Two methods (LoadPreset/SavePreset) are exposed to be able to manually manage loading and saving from the host application.
These methods are independent of the PersistentFilter property whatever its state.

// Load Preset
MyFilterDatagrid.LoadPreset();

// Save Preset
MyFilterDatagrid.SavePreset();

Be aware that filters must remain consistent with your source collection.
For example, if you filter the year 2020 and exclude all other years and when you launch the application your collection has changed, years have been added, the filtering can cause unexpected results.
This is especially true for demo applications that use random data generation.

Benchmark

Intel Core i7, 2.93 GHz, 16 GB, Windows 10, 64 bits.
Tested on the "Last name" column of the demo application using a random distinct name generator, between 5 and 8 letters in length.
The elapsed time decreases based on the number of columns and filtered items.

Number of rows	Opening of the PopUp	Applying the filter	Total (PopUp + Filter)
10 000	< 1 second	< 1 second	< 1 second
100 000	< 1 second	< 1 second	< 1 second
500 000	± 1.5 second	± 1 second	± 2.5 seconds
1 000 000	± 3 seconds	± 1.5 seconds	± 4.5 seconds

Demonstration

Contributors