Gets an object representing the control which forced a postback.
NuGet Package: DevExpress.Web
A Object representing the control which forced a postback.
The ASPxTabControlBase.TabCommand event fires when a control residing on a tab’s template raises the Command event. This can occur when the Button control residing on a template for a tab is clicked. In this instance, the CommandSource property returns the clicked Button control. This can be used to identify the control that forced a postback, if there are several controls residing on a template.
Note that you must specify a tab’s template to display controls within it. refer to the ASPxTabControlBase.TabTemplate (ASPxTabControl.TabTemplate, ASPxPageControl.TabTemplate) property description for more details.