WPF Data Filtering

Our new WPF Filter Editor ships with a redesigned UX designed to simplify usage and engineered to simplify field and operator selection.

At present, the WPF Filter Editor supports:

• WPF Data Grid and Tree List (v18.2+)
• WPF Pivot Grid (v19.1+)

A New Design

Based on user feedback, we've enhanced the look & feel of our Filter Editor and made it much more intuitive.

Fields

The DevExpress WPF Filter Editor ships with improved field selection options. An integrated search box allows you to quickly locate required fields. If your Data Grid includes Bands, our WPF Filter Editor displays fields hierarchically.

In addition, you can now use the FilterEditorControl.QueryFields event to customize the field list. The following demo illustrates how to add ShipCountry, ShipCity, ShipAddress to the Ship category.

Demo: Customize the Field List
Requires installation of WPF Subscription v19.1. Download

Operators

Our new WPF Filter Editor allows you to customize its operator list (via the FilterEditorControl.QueryOperators event). The following demo illustrates how you can remove all operators except Equal and Does not equal, and add a custom operator as needed (in this example, we've created a new operator called Last Years).

Demo: Customize the Operator List
Requires installation of WPF Subscription v19.1. Download

You can also specify Predefined Filters. Our WPF Filter Editor displays these filters within the Predefined filters submenu.

Filter Values

The DevExpress WPF Filter Editor makes it easier to specify filter values. You can select unique values from the data source to configure a filter. Each value in the list displays a quantity.

You can sort these values to locate the appropriate record.

The WPF Filter Editor automatically creates operand editors based on field and operator type. You can now use the OperandTemplate to customize these operand editors. The following demo illustrates how to specify the TrackBarEdit as an operand for Between and Not Between operators.

Demo: Customize Operands
Requires installation of WPF Subscription v19.1. Download

Customizations

The WPF Filter Editor supports numerous customization options:

• You can use the FilterEditorControl.QueryGroupTypes event to prohibit group types. The following demo illustrates how to prohibit users from specifying Or and Not Or logical operators.

  Demo: Prohibit Group Types
  Requires installation of WPF Subscription v19.1. Download
  
  

  

• You can use the FilterEditorControl.QueryGroupOperations event to prohibit group operations (for example, add custom expressions).

  Demo: Prohibit Group Operations
  Requires installation of WPF Subscription v19.1. Download
  
  

  

• You can use the FilterEditorControl.QueryConditionOperations event to prohibit users from removing conditions.

  Demo: Prohibit Condition Operations
  Requires installation of WPF Subscription v19.1. Download
  
  

  

We're not done yet...

You can use our new WPF Filter Editor to filter values displayed within DevExpress data-bound controls (for example, Charts and Data Editors). Use the FilterBehavior to create a CriteriaOperator object. Then assign this object to your data-bound control's filter criteria or use it to filter your data in code.

Demo: Filter Behavior
Requires installation of WPF Subscription v19.1. Download

What's Next for the DevExpress WPF Filter Editor

We are committed to extending the capabilities of our WPF Filter Editor. The following features are planned and expected to ship later this year.

• Server Mode and Virtual Source support.
• Operand editors will work with fields and functions.
• Support for Aggregate operations ("Accounts.Sum(Amount) < 100").