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ASP.NET DataGrid ItemDataBound Event

DataGrid has 2 events:
ASP.NET DataGrid:
ItemCreated
ItemDataBound
When you bind to a data source ItemCreated gets fired followed by ItemDataBound.
I need to know if anyone can think of any good reason of using ItemCreated.
I can't find anything versus putting the whole code in ItemDataBound event(other than keep the event handler's code smaller).
Please let me know if you think otherwise.

ItemCreated is fired on the postbacks, but ItemDataBound only during databinding.

ItemCreated is fired before the data bind actually happens. You would normally put code dealing with the appearance and non bound content of the grid in this event.
ItemDataBound is fired after the data bind. You would normally put code dealing with the data here.

ItemCreated is basically there for you to interact with UI things, and yes, you can do the exact same thing on the ItemDataBound event as well/create your UI changes there too... i prefer DataBound because then the data is already there, but i understand the purpose of ItemCreated

Devexpress Filter Control Clear Filter C#

Is there an event when I click the X button?

There is not such event, but it is possible to handle a related event, instead. The solution is descrived in DevExpress knowledge base: Which event is fired when the [x] button in the filter panel is clicked?

C# how to access the buttons of Telerik RadGrid

I am using Telerik RadGrid, i add a new button in the grid but how can i write an event for this button (Buy) for example when the user press (Buy) it will add this item to his cart with its price in order to calculate his bill.
regards

You need to listen for the ItemCommand event:
<telerik:GridButtonColumn UniqueName="Buy" ButtonType="LinkButton"
Text="Buy" ConfirmText="Add to cart?"
OnItemCommand="rg_ItemCommand" CommandName="AddToBasket" />
In your codebehind
protected void rg_ItemCommand(object sender, GridCommandEventArgs e)
{
if(e.CommandName == "AddToBasket")
{
// Add to basket code here
}
}
You may also need to set the CommandArgument during the ItemCreated or ItemDatabound events, or get it using something like rg.MasterTableView.DataKeyValues[e.Item.Index]["ItemId"].ToString(); after setting ClientDataKeyNames="ItemId" in your MasterTableView settings part in the ascx file (if it is databound).

You need to use the ItemCommandEvent of grid. The ItemCommand event is raised when a button is clicked in the Telerik RadGrid control. This allows you to provide an event-handling method that performs a custom routine whenever this event occurs. Follow the LINK to have more details.

When you create the button you'll want to add an OnClick event to it to handle the click on the button. In this event you'll then add the item to the cart. You'll need to parse the parent row of the button to know which item it is.
Edit:
Since you are using a GridButtonColumn and not adding a button as you stated then this applies instead (from Telerik.com):
This column renderes a button of the
specified ButtonType in each
corresponding cell of the items of
type GridDataItem and
GridEditFormItem. You can use this
buttons to fire command events that
can be handeled in RadGrid.ItemCommand
event handler. This, in combination
with the event bubbling mechanism in
Telerik RadGrid, allows you to create
a column of custom button controls,
such as Add, Remove, Select or Edit
buttons.
So essentially you'll need to use the grids ItemCommand event to handle the button click.

Datapager page change event

Currently I need to call a method when the user changes the page number of a datapager and moves from one page to another.Can any one one tell me is there any datapager page change event or any work around for this? Thanks in advance.

You might have to subscribe to the page change event of the control the datapager is doing the paging for. An instance would be if you are using a gridview then you can subscribe to the gridview PageIndexChanged event and put your method call there.

OnItemCommand Event of the DataGrid is not firing

I am having a DataGrid in one usercontrol which is getting filled with some data when I press some button(ouside it). This Datagrid is filled by one linkbutton also. When I click this LinkButton then OnItemCommand or SelectedIndexChanged should fire, but both the events are not firng. While the control's PageLoad event is firing.
Please let me know where I am doing the mistake.
Thanks

Is your control added dynamically, using something like Page.LoadControl()? If so, events won't fire unless the control is dynamically added for each request. That's the only way the control tree can be properly built again. I usually do this in Init().

https://web.archive.org/web/20211029043701/https://www.4guysfromrolla.com/articles/042402-1.aspx
For those that see this post, looking for an answer. Most likely, you're rebinding the data to the datagrid on every call. Use a conditional and check !this.IsPostBack.