Validating custom activities in the Workflow designerhttp://msmvps.com/blogs/theproblemsolver/archive/2008/05/18/validating-custom-activities-in-the-workflow-designer.aspxCreate a derived class from ActivityValidator and add it to your custom activity using the ActivityValidatorAttribute. For example: [ ActivityValidator ( typeof ( ValidatedActivityValidator ))] public partial class ValidatedActivity : SequenceActivityenCommunityServer 2008.5 SP2 (Build: 40407.4157)re: Validating custom activities in the Workflow designerhttp://msmvps.com/blogs/theproblemsolver/archive/2008/05/18/validating-custom-activities-in-the-workflow-designer.aspx#1655023Tue, 25 Nov 2008 09:19:50 GMTd67277c4-116b-43f1-b688-e9ef184ea916:1655023Kumesh<p>I created a custom validator class for my custom activity but Error messages are displayed in custom activity as well as Main parent workflow designer. i need to display error messages only for my custom activity.</p> <p>Thanx in advance.</p> <div style="clear:both;"></div><img src="http://msmvps.com/aggbug.aspx?PostID=1655023" width="1" height="1">Validating workflow activity metadatahttp://msmvps.com/blogs/theproblemsolver/archive/2008/05/18/validating-custom-activities-in-the-workflow-designer.aspx#1624904Tue, 20 May 2008 12:54:13 GMTd67277c4-116b-43f1-b688-e9ef184ea916:1624904WF Community Bloggers<p>There are several options for validating properties on a custom activity. Besides the possibility of</p> <img src="http://msmvps.com/aggbug.aspx?PostID=1624904" width="1" height="1">Validating workflow activity metadatahttp://msmvps.com/blogs/theproblemsolver/archive/2008/05/18/validating-custom-activities-in-the-workflow-designer.aspx#1624897Tue, 20 May 2008 12:31:36 GMTd67277c4-116b-43f1-b688-e9ef184ea916:1624897The Problem Solver<p>There are several options for validating properties on a custom activity. Besides the possibility of</p> <img src="http://msmvps.com/aggbug.aspx?PostID=1624897" width="1" height="1">