Features:

• This control can be used as a loading indicator during asynchronous post-back.
• The loading element can be easily customized.

<%=Html.Syncfusion().WaitingPopup("mypopup")   
    .EnableHTML5(true)         
%>

Interactive Features:

• The WaitingPopup control is placed inside the call-back panel.
• The control’s width and height value is increased or decreased depending on the Width and Height text box values.
• The WaitingPopup control contains the following types of predefined shapes:
• SqaureCircles
• BigRoller
• BigCircleBall
• IndicatorBig2
• The background transparency for the WaitingPopup panel can be set.

For more information, please visit our WaitingPopup Documentation :