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ColumnBase.ShowValidationAttributeErrors Property

Gets or sets whether error icons are displayed within column cells that fail validation specified by the Data Annotations attribute(s). This is a dependency property.

Namespace: DevExpress.Xpf.Grid

Assembly: DevExpress.Xpf.Grid.v22.1.Core.dll

NuGet Package: DevExpress.Wpf.Grid.Core

Declaration

public DefaultBoolean ShowValidationAttributeErrors { get; set; }

Property Value

Type Description
DefaultBoolean

A DefaultBoolean enumeration value that specifies whether error icons are displayed within column cells that fail validation.

Available values:

Name Description
True

true. DefaultBoolean.True has a constant value of 0, while the standard true value corresponds to a value of 1. In Visual Basic, do not use implicit conversion of Boolean values to DefaultBoolean, and vice versa, as the conversion may produce incorrect results.

False

false. DefaultBoolean.False has a constant value of 1, while the standard false value corresponds to a value of 0. In Visual Basic, do not use implicit conversion of Boolean values to DefaultBoolean, and vice versa, as the conversion may produce incorrect results.

Default

The default behavior determined by the control’s logic.

Remarks

The WPF Grid and TreeList controls support DataAnnotations attributes that specify data validation rules (to use data annotation attributes, reference the System.ComponentModel.DataAnnotations assembly).

By default, the grid (or treelist) displays error icons (ErrorIcon_Critical) within cells with invalid values, and provides error descriptions displayed as tooltips (see the image below). In this instance, the cell focus cannot be moved to another cell until the cell’s value is corrected.

attributes-based validation

To override the default behavior and hide errors, set the ShowValidationAttributeErrors property to false. If the ShowValidationAttributeErrors property is set to DefaultBoolean.Default, the visibility of error icons is specified by the view’s DataViewBase.ShowValidationAttributeErrors property.

To learn more, see Attributes-Based Validation.

See Also