What is the sequence of events firing off in asp.net Gridview control?

Question

I use GridViews pretty often and sometimes I get confused to where to put certain code. What is the sequence that events are fired off including all page events?

Edited: I really am also trying to understand what happens between the page and the Gridview. Do the events ever cross? Or do all page events occur at once then all Gridview events occur? And not just GridViews, any control - but mostly page and GridView interaction.

Answer 1

If you're refering to the Page Life Cycle, you can find an overview here .

Summary of the life cycle is:

Page request

The page request occurs before the page life cycle begins. When the page is requested by a user, ASP.NET determines whether the page needs to be parsed and compiled (therefore beginning the life of a page), or whether a cached version of the page can be sent in response without running the page.

Start

In the start step, page properties such as Request and Response are set. At this stage, the page also determines whether the request is a postback or a new request and sets the IsPostBack property. Additionally, during the start step, the page's UICulture property is set.

Page initialization

During page initialization, controls on the page are available and each control's UniqueID property is set. Any themes are also applied to the page. If the current request is a postback, the postback data has not yet been loaded and control property values have not been restored to the values from view state.

Load

During load, if the current request is a postback, control properties are loaded with information recovered from view state and control state.

Validation

During validation, the Validate method of all validator controls is called, which sets the IsValid property of individual validator controls and of the page.

Postback event handling

If the request is a postback, any event handlers are called.

Rendering

Before rendering, view state is saved for the page and all controls. During the rendering phase, the page calls the Render method for each control, providing a text writer that writes its output to the OutputStream of the page's Response property.

Unload

Unload is called after the page has been fully rendered, sent to the client, and is ready to be discarded. At this point, page properties such as Response and Request are unloaded and any cleanup is performed.

As for the GridView events, they can be found here .

Answer 2

protected void GridView1_Load(object sender, EventArgs e)
{
   System.Diagnostics.Debug.WriteLine("GridView1_Load");
}
protected void GridView1_DataBinding(object sender, EventArgs e)
{
   System.Diagnostics.Debug.WriteLine("GridView1_DataBinding");
}
protected void GridView1_DataBound(object sender, EventArgs e)
{
   System.Diagnostics.Debug.WriteLine("GridView1_DataBound");
}
protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
   System.Diagnostics.Debug.WriteLine("GridView1_RowDataBound");
}

Answer 3

http://msdn.microsoft.com/en-us/library/ms993231.aspx

Gridview Control Events

Answer 4

ASP.NET 2.0事件顺序中有一个更长的列表（注意这是2.0）。