Hello,

Off the top of my head, it seems the most logical solution would be walk up the Parent chain of any control failing validation looking for the owning UltraTabPageControl. Once it finds the UltraTabPageControl, set the Tab.Appearance.Image property to indicate there is an error.

Code similar to the following will keep track of the tabs with controls failing validation, and set the image at the end:

            List<UltraTab> errorTabList = new List<UltraTab>();

            foreach (Control controlBeingValidated in new Control[] { this.textBox1, this.textBox2, this.textBox3, this.textBox4 })

            {

                if (PerformValidationOnControl(controlBeingValidated) == false)

                {

                    // Validation Failed

                    Control parentControl = controlBeingValidated.Parent;

                    UltraTabPageControl page = null;

                    // Find the containing Tab

                    while (parentControl != null)

                    {

                        page = parentControl as UltraTabPageControl;

                        if (page != null)

                            break;

                        parentControl = parentControl.Parent;

                    }

                    // Add the Tab to the list of Tabs with errors

                    if (page != null &&

                        errorTabList.Contains(page.Tab) == false)

                        errorTabList.Add(page.Tab);

                }

                // Once all controls have been validated. 

                // Loop through all tabs and either set or reset the image

                // based on the tab's existance in the error list. 

                foreach (UltraTab tab in this.ultraTabControl1.Tabs)

                {

                    if (errorTabList.Contains(tab))

                    {

                        tab.Appearance.ImageHAlign = Infragistics.Win.HAlign.Right;

                        tab.Appearance.Image = SystemIcons.Error.ToBitmap();

                    }

                    else

                        tab.Appearance.ResetImage();

                }

            }

Let me know if you have additional questions regarding this.

Thanks,

Chris