private void TreeGrid_CurrentCellValidating(object sender, TreeGridCurrentCellValidatingEventArgs args)
{
if (args.Column.MappingName == "LastName" && (args.NewValue == null || string.IsNullOrEmpty(args.NewValue.ToString())))
{
args.ErrorMessage = "LastName should not be null value";
args.IsValid = false;
}
}
/// <summary>
/// Raises the <see cref="Syncfusion.UI.Xaml.TreeGrid.SfTreeGrid.CurrentCellValidating"/> event.
/// </summary>
/// <param name="treeGrid">
/// Specifies the corresponding grid .
/// </param>
/// <param name="column">
/// The corresponding column that was in edit mode.
/// </param>
/// <param name="oldValue">
/// The cell value before edited.
/// </param>
/// <param name="newValue">
/// The value of the current cell is being edited.
/// </param>
/// <param name="changedNewValue">
/// The cell value after editing completed.
/// </param>
/// <returns>
/// <b>true</b> if <see cref="Syncfusion.UI.Xaml.TreeGrid.SfTreeGrid.CurrentCellValidating"/> event is raised; otherwise, <b>false</b>.
/// </returns>
protected bool RaiseCurrentCellValidatingEvent(SfTreeGrid treeGrid, TreeGridColumn column, object oldValue, object newValue, out object changedNewValue, object record, TreeNode treeNode)
{
var e = new TreeGridCurrentCellValidatingEventArgs(treeGrid)
{
OldValue = oldValue,
NewValue = newValue,
Column = column,
RowData = record,
Node = treeNode
};
bool isSuspendValidating = TreeGrid.RaiseCurrentCellValidatingEvent(e);
changedNewValue = e.NewValue;
return(isSuspendValidating);
}
