RepositoryItemTextEdit.AllowNullInput Property
Gets or sets whether pressing the CTRL+DEL and CTRL+0 key combinations resets the editor’s value to null (Color.Empty for the ColorEdit and ColorPickEdit controls).
Namespace: DevExpress.XtraEditors.Repository
Assembly: DevExpress.XtraEditors.v18.2.dll
Declaration
[DXCategory("Behavior")]
[DefaultValue(DefaultBoolean.Default)]
public virtual DefaultBoolean AllowNullInput { get; set; }Property Value
| Type | Default | Description |
|---|---|---|
| DefaultBoolean | **Default** | A DefaultBoolean value that specifies if end-users can set the editor’s value to a null reference. |
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). |
Remarks
If the AllowNullInput property is set to DefaultBoolean.True, end-users can use the CTRL+DEL or CTRL+0 key combinations to reset the editor’s value to:
- null (Nothing in Visual Basic) for all controls except ColorEdit and ColorPickEdit
- Color.Empty for ColorEdit and ColorPickEdit
If the AllowNullInput property is set to False, these shortcuts are disabled.
The DefaultBoolean.Default value is treated differently for different editors, and when editors are used in-place or as standalone controls:
- for the DateEdit control, the DefaultBoolean.Default value is treated as True, regardless of whether the control is used in-place or as standalone;
- for other editors, the DefaultBoolean.Default value is treated as True if the editors are used in-place in container controls (XtraGrid, XtraVerticalGrid and XtraTreelist); and it’s treated as False for standalone versions of the editors, and when the editors are used in-place within bars.
For a date editor, the AllowNullInput and RepositoryItemDateEdit.ShowClear properties are synchronized. Setting the ShowClear property to true sets the AllowNullInput property to Default automatically, and vice versa. Setting the ShowClear property to false sets the AllowNullInput property to False, and vice versa.
Related GitHub Examples
The following code snippets (auto-collected from DevExpress Examples) contain references to the AllowNullInput property.
Note
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