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TabControl tell if tab changes by user click or programmatically

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93158 Feb 26,2010 05:30 PM UTC Mar 1,2010 11:55 AM UTC WinForms 1
Tags: Tools
Jon Zucker
Asked On February 26, 2010 05:30 PM UTC

When using a TabControlAdv, we allow the user to select a tab. We perform some other actions when the user selects a tab. Also, we sometimes programmatically select a tab. When that happens, we need different things to happen than when a user clicks on a tab (and, also, we don't want an infinite loop).

Is there a way to tell the difference between having a user select a new tab and changing a selected tab programmatically? I've been using the SelectedIndexChanging event to catch when the user selects a new tab, but that means I have to keep disabling and enabling the event handler when I programmatically change the tab.

Rajasekar B [Syncfusion]
Replied On March 1, 2010 11:55 AM UTC


In SelectedIndexChanged event,you can find whether the tab is selected by mouse or through code using the below workaround:

int i = this.tabControlAdv1.Renderer.HitTestTabs(this.tabControlAdv1.PointToClient(MousePosition), false);

This will return selected index. If the value of i is -1 then it indicates it is selected through code. If it returns exact selected index then it is selected by mouse.

Please let me know if this helps you.



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