ASP.NET Page执行顺序

ASP.NET Page执行顺序如：OnPreInit()、OnInit()

当页面进行回发时，如点击按钮，以上事件都会重新执行一次，这时的执行顺序为：

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之后执行，可以测试一下：

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
4000
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++;
}
}