OptionsColumnFilter.ShowBlanksFilterItems Property

Gets or sets whether the column’s Filter Dropdown (when presented as a Regular List or Checked List) displays the “(Blanks)” and “(Non Blanks)” filter items.

Namespace: DevExpress.XtraGrid.Columns

Assembly: DevExpress.XtraGrid.v19.1.dll

Declaration

C#

[DefaultValue(DefaultBoolean.Default)]
[XtraSerializableProperty]
public virtual DefaultBoolean ShowBlanksFilterItems { get; set; }

VB.NET

<DefaultValue(DefaultBoolean.Default)>
<XtraSerializableProperty>
Public Overridable Property ShowBlanksFilterItems As DefaultBoolean

Property Value

Type	Default	Description
DefaultBoolean	**Default**	A DefaultBoolean value that specifies whether the column’s Filter Dropdown displays the “(Blanks)” and “(Non Blanks)” filter items.

Available values:

Name	Description
True	Corresponds to a Boolean value of true.
False	Corresponds to a Boolean value of false.
Default	The value is determined by the current object’s parent object setting (e.g., a control setting).

Property Paths

You can access this nested property as listed below:

Object Type	Path to ShowBlanksFilterItems
GridColumn	.OptionsFilter.ShowBlanksFilterItems
LayoutViewColumn	.OptionsFilter.ShowBlanksFilterItems
BandedGridColumn	.OptionsFilter.ShowBlanksFilterItems

Remarks

The paint style of a column’s Filter Dropdown is specified by the OptionsColumnFilter.FilterPopupMode property. When the Filter Dropdown is painted as a Regular List or Checked List, it may contain the “(Blanks)” and “(Non Blanks)” items used to filter records that contain Null (DBNull) values and empty strings.

If the ShowBlanksFilterItems property is set to Default, the “(Blanks)” and “(Non Blanks)” items are present in the Filter Dropdown if the View’s data source contains records with Null or DBNull in the current column. If the ShowBlanksFilterItems property is set to True, the “(Blanks)” and “(Non Blanks)” filter items are always available in the Filter Dropdown. Set the ShowBlanksFilterItems property to False to forcibly hide the “(Blanks)” and “(Non Blanks)” filter items.

Note

For the Filter Dropdown painted as a Checked List, the “(Non Blanks)” item is not supported. The Checked Filter Dropdown supports only the “(Blanks)” item.