C# 通过正则表达式来限制控件输入有效性

  <dxe:TextEdit
                            Width="150"
                            HorizontalAlignment="Left"
                            Mask="[1-9]|[1-9]\d|1\d{2}|2[0-4]\d|25[0-5]"
                            MaskType="RegEx"
                            Text="{Binding MinGrayContrast, UpdateSourceTrigger=PropertyChanged, Mode=TwoWay}"
                            ToolTip="Value must in range [1,255]" />

 <dxg:GridControl  Grid.Row="0" Grid.Column="1" MaxHeight="500" 
                    ItemsSource="{Binding PointList, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" FontSize="14" Grid.RowSpan="3"
                     HorizontalAlignment="Left"  VerticalAlignment="Top"  Margin="0" AllowLiveDataShaping="True" >
                        <dxg:GridControl.View>
                            <dxg:TableView ShowTotalSummary="True" AllowMoveColumnToDropArea="False" AllowGrouping="False" AutoExpandOnDrag="False" ShowDragDropHint="False" ShowGroupPanel="False" AllowColumnMoving="False" AllowResizing="False" RowIndicatorContentTemplate="{StaticResource rowIndicatorContentTemplate}" Header="datashow" />
                        </dxg:GridControl.View>
                        <dxg:GridColumn  Header="ID" FieldName="ID"   Width="80"/>
                        <dxg:GridColumn  Header="X(mm)" FieldName="Col"   Width="80">
                            <dxg:GridColumn.EditSettings>
                                <dxe:TextEditSettings MaskType="RegEx" Mask="[1-9]|[1-9]\d|1\d{2}|2[0-4]\d|25[0-5]"/>
                            </dxg:GridColumn.EditSettings>
                        </dxg:GridColumn>
                        <dxg:GridColumn  Header="Y(mm)" FieldName="Row"   Width="80"/>
                        <dxg:GridColumn  Header="Z(um)" FieldName="Z"  Width="80"/>
                    </dxg:GridControl>