Codejock Developer Community : Property Grid Validation Design? http://forum.codejock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Wed, 22 Apr 2026 13:45:39 +0000 Mon, 10 Nov 2008 09:39:53 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 forum.codejock.com/RSS_post_feed.asp?TID=12637 <![CDATA[Codejock Developer Community]]> http://forum.codejock.com/forum_images/codejock-logo.gif http://forum.codejock.com/ <![CDATA[Property Grid Validation Design? : Hi, Olegnot sure what you have...]]> http://forum.codejock.com/forum_posts.asp?TID=12637&PID=42749&title=property-grid-validation-design#42749 Author: MacW
Subject: 12637
Posted: 10 November 2008 at 9:39am

Hi, Oleg

not sure what you have in mind.

XTP_PGN_ITEMVALUE_CHANGED is sent _after_ the edit field has called the OnValidateItem method. At this time the value of the item is already set if the OnValidateItem method accepted the change, or contains the contents before the edit cycle began...
]]> Mon, 10 Nov 2008 09:39:53 +0000 http://forum.codejock.com/forum_posts.asp?TID=12637&PID=42749&title=property-grid-validation-design#42749 <![CDATA[Property Grid Validation Design? : Hi, You can catch standard XTP_PGN_ITEMVALUE_CHANGED...]]> http://forum.codejock.com/forum_posts.asp?TID=12637&PID=42724&title=property-grid-validation-design#42724 Author: Oleg
Subject: 12637
Posted: 10 November 2008 at 2:12am

Hi,
You can catch standard XTP_PGN_ITEMVALUE_CHANGED message and if you don't like new value show message box set focus back.
]]> Mon, 10 Nov 2008 02:12:09 +0000 http://forum.codejock.com/forum_posts.asp?TID=12637&PID=42724&title=property-grid-validation-design#42724 <![CDATA[Property Grid Validation Design? : Hi, how is the validation in the...]]> http://forum.codejock.com/forum_posts.asp?TID=12637&PID=42704&title=property-grid-validation-design#42704 Author: MacW
Subject: 12637
Posted: 07 November 2008 at 9:39am

Hi,

how is the validation in the PropertyGrid intented to be used?

There seems to be only the GridIItem OnValidate method, which allows me to either accept or reject a change for a grid item.

But there seems to be no way to display a message and also keep the editor "alive", allowing the user to correct his input.

For example, my users type a complex (and long) formula into the grid value field. The OnValidateItem is fired. My method checks the formula and finds a problem. I now can either accept the invalid formula, or revert to the old content of the edit field - erasing everything the user has typed so far. This of course is not acceptable.

This cannot be how this is designed to be used. All other grid controls on the market provide a way to ínform the user about a problem while keeping the editor active and the current contents set...

I'm sure I'm jut not getting it.
Or has Codejock just not thought that through or looked at other grid controls before implementing this? I have found quite a number of questions on similar issues, but no replies...

And yes, I did check the CJ help. The only information I've found was the description

"This method is called to check value from in-place edit control"

for the OnValidateEdit method. Which is not really helpful.

]]> Fri, 07 Nov 2008 09:39:47 +0000 http://forum.codejock.com/forum_posts.asp?TID=12637&PID=42704&title=property-grid-validation-design#42704