PropertyGrid Dirty

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   Is there an easy way to programmatically tell any PropertyGrid items have been modified by the user (for example, a Dirty property)?

I've tried comparing the DefaultValue to the Value property, but in the case of Enums, the DefaultValue returns the translated label for the enum, while the Value property returns the actual value of the enum. The other option is to store the original value of each child item and then compare, but this is tedious when you have a long list of items.

If a Dirty property could be added, that would be great. Also of use would be an OriginalValue property for each item.

Thanks.

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jpbro Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 12 January 2007 Status: Offline Points: 1354	Post Options Post Reply Quote jpbro Report Post Thanks(0) Quote Reply Topic: PropertyGrid Dirty Posted: 23 March 2008 at 12:12pm
	Is there an easy way to programmatically tell any PropertyGrid items have been modified by the user (for example, a Dirty property)? I've tried comparing the DefaultValue to the Value property, but in the case of Enums, the DefaultValue returns the translated label for the enum, while the Value property returns the actual value of the enum. The other option is to store the original value of each child item and then compare, but this is tedious when you have a long list of items. If a Dirty property could be added, that would be great. Also of use would be an OriginalValue property for each item. Thanks.

Aaron Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 29 January 2008 Status: Offline Points: 2192	Post Options Post Reply Quote Aaron Report Post Thanks(0) Quote Reply Posted: 23 March 2008 at 4:44pm
	Hi, If you set: wndPropertyGrid.HighlightChangedItems = True the changed values will be highlighted

jpbro Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 12 January 2007 Status: Offline Points: 1354	Post Options Post Reply Quote jpbro Report Post Thanks(0) Quote Reply Posted: 23 March 2008 at 5:08pm
	Hi Aaron, Thanks for replying. I have the HighlighChangedItems property set already, I'm trying to determine if anything has changed programatically to decide whether or not to restart my server application. If the user hasn't changed any settings, then I'll just leave everything running as is. I guess I was just hoping that CJ would expose whatever they are using to highlight the changed items as a property for each item so we can test for changes.

Aaron Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 29 January 2008 Status: Offline Points: 2192	Post Options Post Reply Quote Aaron Report Post Thanks(0) Quote Reply Posted: 24 March 2008 at 1:38am
	Hi, You could try this: In the ValueChanged event: If CStr(Item.Value) <> CStr(Item.DefaultValue) Then Item.ValueMetrics.ForeColor = vbRed 'value changed Else Item.ValueMetrics.ForeColor = vbGreen 'value changed into default value back again End If Iterate through the items: Dim propItem As PropertyGridItem For Each propItem In wndPropertyGrid.Categories(1).Childs(1).Childs Select Case propItem.ValueMetrics.ForeColor Case vbRed: MsgBox "Value changed..." Case vbGreen: MsgBox "Value changed back to original..." Case Else: MsgBox "Value never changed..." End Select Next propItem Test with checkbox,string and enum, the other items you have to check yourself

Aaron Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 29 January 2008 Status: Offline Points: 2192	Post Options Post Reply Quote Aaron Report Post Thanks(0) Quote Reply Posted: 24 March 2008 at 4:08am
	Hi, In the test I used PropertyGridItemString and not PropertyGridItemEnum, I did add some constraints to the PropertyGridItemString. In this case you are able to compare the Item.DefaultValue with the Item.Value

jpbro Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 12 January 2007 Status: Offline Points: 1354	Post Options Post Reply Quote jpbro Report Post Thanks(0) Quote Reply Posted: 25 March 2008 at 9:48am
	Hi Aaron, Thanks for your help. I'm not sure that I can get things to work the way that I want with your code when using PropertyGridItemString because the constraints don't seem to work (nor does the drop-down appears). I have a PropertyGridItem that needs to show Yes/No in a drop-down. Using the PropertyGridItemBoolean would be ideal here, but it only seems to show True/False. So I use a PropertyGridItemEnum and set constraints for 0 = No, -1 = Yes. I've tried using constraints with PropertyGridItemString and PropertyGridItemBool, but they don't seem to do anything for those item types. You mention that you got the PropertyGrid to show constraints for the "string" type...how did you do it? (NOTE: I am now beta testing v12, so maybe it is a problem with the new version?). In any case, it seems to me that the PropertyGridItemEnum type should return its underlying value for the DefaultValue property and not the constraint caption, since that is purely cosmetic. What do you think?

Baldur Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 22 November 2006 Location: Germany Status: Offline Points: 244	Post Options Post Reply Quote Baldur Report Post Thanks(0) Quote Reply Posted: 27 March 2008 at 12:03pm
	If you use PropertyGridItemString, you have to add an inplacebutton with Id 101 for dropdownbutton. In Changing-Event you can check against the constaints and if false set cancel to true.

Aaron Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 29 January 2008 Status: Offline Points: 2192	Post Options Post Reply Quote Aaron Report Post Thanks(0) Quote Reply Posted: 27 March 2008 at 3:15pm
	Hi, You don't have to add an inplaceButton just set Item.Flags = ItemHasComboButton.