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   [Collapse]FilterEditorControl Class
     FilterEditorControl Members
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 End-User Documentation
View this topic on docs.devexpress.com (Learn more)

FilterEditorControl Class

Allows users to build filter criteria and apply them to controls and data sources. Supports visual and text criteria edit modes.

Namespace:DevExpress.DataAccess.UI
Assembly:DevExpress.DataAccess.v19.2.UI.dll

Expanded Syntax

Expanded Remarks

The FilterEditorControl allows users to build a filter criterion and apply it to the attached control or data source. The control supports visual and text criteria edit modes.

Note

Run the XtraGrid demo to try out the FilterEditorControl.

The FilterEditorControl arranges edit modes into two horizontal panels, whereas the obsolete FilterEditorControl arranges them into two tabs. The FilterEditorControl is backward compatible with the FilterEditorControl.

Since version 18.1, the filter editor in the grid control, in the tree list, and other data-aware controls uses the FilterEditorControl. Disable the static (Shared in VB) WindowsFormsSettings.UseAdvancedFilterEditorControl property to use the FilterEditorControl.

Expanded Binding to Source Control

The SourceControl property specifies the data control or data source to which the FilterEditorControl is attached.

When the filter criteria changes in the source control (for instance, by the user or in code), the FilterEditorControl automatically reflects the changes.

Expanded Filter Criteria

The FilterCriteria property gets or sets the DevExpress.Data.Filtering.CriteriaOperator object that specifies the filter criteria. The FilterString property specifies the string expression that corresponds to the filter criteria. See the Criteria Language Syntax for more information.

When the filter criteria changes, the FilterEditorControl does not automatically apply it to the source control. Call the ApplyFilter method to apply the filter criteria. To clear the filter criteria and apply it, call the ClearFilter method.

If the ReadOnly option is enabled, users cannot edit filter criteria. You can still edit the filter criteria in code.

Expanded Visual and Text Edit Modes

The ViewMode property specifies whether to enable the Visual and/or Text edit mode.

See end-user capabilities in both modes below.

Expanded Visual and Text Criteria Display Style

In Visual edit mode, the static (Shared in VB) WindowsFormsSettings.FilterCriteriaDisplayStyle property specifies whether to enable the Visual or Text criteria display style.

Note

To change the criteria display style in an embedded filter editor, use the data-aware control's corresponding properties:

Expanded Pop-up Menu or Combo Box to Edit Operators and Operands

The UseMenuForOperandsAndOperators property specifies whether to use a pop-up menu or a combo box to edit operators and operands. The combo box displays a search box in the drop-down list and the vertical scroll bar (when the item count exceeds the list's capacity).

Expanded Unbound Mode

You can also use the FilterEditorControl even if it is not bound to a source control (the SourceControl property equals null). Users can build filter criteria that you can get from the FilterCriteria or FilterString property. In unbound mode, populate the FilterColumns collection with columns by which data should be filtered (this collection is populated automatically in bound mode).

Expanded End-user Capabilities

Visual Edit Mode

The control arranges filter criteria in a tree structure in visual mode:

  • branch nodes in the tree are group logical operators ('And', 'Or', 'Not And', 'Not Or')
  • leaf nodes are filter conditions (for example, 'Discount is more than 15%')

Users can click on a group to change the logical operator.

The + button is displayed next to a group. Users can click this button to add a new group or condition to the current group.

The x button removes the group or condition.

Text Edit Mode

The text panel features include the following:

  • math, aggregate, date-time, and other functions that can be used to calculate values

  • tooltips that are displayed for columns and functions

  • syntax errors are highlighted

Expanded Inheritance Hierarchy

System.Object
    System.MarshalByRefObject
       System.ComponentModel.Component
          System.Windows.Forms.Control
             ControlBase
                BaseControl
                   BaseStyleControl
                      FilterEditorControl

Expanded See Also

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