當頁面進行回發時，如點擊按鈕，以上事件都會重新執行一次，這時的執行順序為：
1. OnPreInit
2. OnInit
3. OnInitComplete
4. OnPreLoad
5. Page_Load
6. OnLoad
7. Button_Click
8. OnLoadComplete
9. OnPreRender
可以看到，Button_Click事件位于OnLoad之后執行，可以測試一下：

public partial class TestControls : System.Web.UI.Page {static int count = 0;protected void Page_Load(object sender, EventArgs e){Response.Write(count+ "Page_Load <br />");count++;}protected override void OnPreInit(EventArgs e){base.OnPreInit(e);Response.Write(count + "OnPreInit <br />");count++;}protected override void OnInit(EventArgs e){base.OnInit(e);Response.Write(count + "OnInit <br />");count++;}protected override void OnLoad(EventArgs e){base.OnLoad(e);Response.Write(count + "OnLoad <br />");count++;}protected override void OnPreLoad(EventArgs e){base.OnPreLoad(e);Response.Write(count + "OnPreLoad <br />");count++;}protected override void OnLoadComplete(EventArgs e){base.OnLoadComplete(e);Response.Write(count + "OnLoadComplete <br />");count++;}protected override void OnInitComplete(EventArgs e){base.OnInitComplete(e);Response.Write(count + "OnInitComplete <br />");count++;}protected override void OnUnload(EventArgs e){base.OnUnload(e);}protected override void OnDataBinding(EventArgs e){base.OnDataBinding(e);Response.Write(count + "OnDataBinding <br />");count++;}protected override void OnPreRender(EventArgs e){base.OnPreRender(e);Response.Write(count + "OnPreRender <br />");count++;}protected void btnGraphics_Click(object sender, EventArgs e){//Bitmap bmp = new Bitmap(10, 10);//Graphics g = Graphics.FromImage(bmp);Response.Write(count + "btnGraphics_Click <br />");count++;} }

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轉載于:https://www.cnblogs.com/wolfocme110/p/4173194.html

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