view state in usercontrols

Is it necessary to reload the viewstate of usercontrols during postback? I 开发者_如何学Cwant to know in which case viewstate is set by default.

no it's not necessary that everytime view state of a usercontrol or webcontrol will be set. it can be controled during page cycle if viewstate properties of a control set =false then it will not set while page is postback. autopostback.

you can also control viewstate properties of a usercontrol and webcontrol in pre_int stage of life cycle. you can also off tracing of view state in pre_int stage of life cycle. for more information link text