You can use the RadRotator control to create slideshow. The RadRotator has the following features.
ScrollDirection - specifies possible directions for scrolling rotator frames
RotatorType - specifies the type of rotator [how the rotator will render and what
options the user will have for interacting with it on the client]
SlideShowAnimation-Type - Specifies the type of the animation (takes effect only
when the RotatorType property is set to SlideShow or SlideShowButtons)
ScrollDuration - specifies the speed in milliseconds for scrolling rotator frames
FrameDuration - specifies the time in milliseconds each frame will display in automatic
scrolling scenarios
WrapFrames - when set to true, this property configures the RadRotator to start
scrolling the rotator frames from the beginning, once the rotator shows the last
frame