New Post: Property Grid disable update on keystroke.

Hi,

By default, for a property of type double, the editor in the propertyGrid will be a PropertyGridEditorDoubleUpDown, which is a DoubleUpDown.
Starting at v2.5, a new property is available for
-NumericUpDowns
-DateTimeUpDown
-DateTimePicker
-TimePicker
-TimeSpanUpDown

The new property is called "UpdateValueOnEnterKey" and is False by default. If you set it to true, the synchronization between "Value" and "Text" will only be done on a Enter key press, or a lostFocus.

So you could use a specific editor for double :

<toolkit:PropertyGrid x:Name="_propertyGrid"
                            PropertyValueChanged="_propertyGrid_PropertyValueChanged_1">
         <toolkit:PropertyGrid.EditorDefinitions>
            <toolkit:EditorTemplateDefinition TargetProperties="{x:Type sys:Double}">
               <toolkit:EditorTemplateDefinition.EditingTemplate>
                  <DataTemplate>
                     <toolkit:PropertyGridEditorDoubleUpDown UpdateValueOnEnterKey="True"
                                                             Value="{Binding Value}"/>
                  </DataTemplate>
               </toolkit:EditorTemplateDefinition.EditingTemplate>
            </toolkit:EditorTemplateDefinition>
         </toolkit:PropertyGrid.EditorDefinitions>
</toolkit:PropertyGrid>

I suggest you wait for the next community Edition : v2.5 or buy the Plus Edition, which is 2 versions ahead at v2.6 (with v2.7 to be released shortly).
You can find the Plus Edition here : https://wpftoolkit.codeplex.com/wikipage?title=Compare%20Editions