普通页面运行规律
Page_PreInit
Page_Init
Page_InitComplete
Page_PreLoad
Page_Load
Button1事件触发!
Page_LoadComplete
Page_PreRender
Page_PreRenderComplete
Page_SaveStateComplete
按钮default
有模板页的运行规律
Page_PreInit
MasterPage_Init
Page_Init
Page_InitComplete
Page_PreLoad
Page_Load
MasterPage_Load
Button2事件触发!
Page_LoadComplete
Page_PreRender
MasterPage_PreRender
Page_PreRenderComplete
Page_SaveStateComplete
MasterPage_Init
Page_Init
Page_InitComplete
Page_PreLoad
Page_Load
MasterPage_Load
Button2事件触发!
Page_LoadComplete
Page_PreRender
MasterPage_PreRender
Page_PreRenderComplete
Page_SaveStateComplete
按钮ContentPage