DataGrid.IsValid Property
Microsoft Silverlight will reach end of support after October 2021. Learn more.
Gets a value that indicates whether data in the grid is valid.
Namespace: System.Windows.Controls
Assembly: System.Windows.Controls.Data (in System.Windows.Controls.Data.dll)
Syntax
'Declaration
Public Property IsValid As Boolean
public bool IsValid { get; internal set; }
Property Value
Type: System.Boolean
true if the data is valid; otherwise, false.
Remarks
Dependency property identifier field: IsValidProperty
The DataGrid supports cell-level property validation and row-level object validation. If a validation exception is encountered in the property setter, the cell editing control displays its error state. The DataGridCell.IsValid, DataGridRow.IsValid, and DataGrid.IsValid properties are all set to false. The DataGrid will not exit cell editing mode until the validation error is resolved.
When the row edit is committed, each cell is validated again. In addition, if the object that the row is bound to has a ValidationAttribute, validation is performed on the object. If object validation errors are found, the DataGridRow.IsValid, and DataGrid.IsValid properties are set to false The DataGrid has a built-in ValidationSummary where row-level errors are displayed. The DataGrid will not exit row editing mode until the validation errors are resolved. In order for validation to work correctly, each DataGridBoundColumn.Binding must have its ValidatesOnExceptions and NotifyOnValidationError properties set to true, and its UpdateSourceTrigger set to Explicit.
For more information about validation visual states, see the DataGrid Styles and Templates topic.
Version Information
Silverlight
Supported in: 5, 4, 3
Platforms
For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.
See Also