Hi:

     How to custom delete command in list.aspx or detail.aspx?

I hope delete other data and write log after deleting a recorder in list.aspx or detail.aspx

Can you please explain your requirement in detail? 

example:

   I will write a "delete log" to table logs when I click delete linkbutton of gridview in List.aspx,how to do this? 

You can handle the events on the Deleting/Deleted events on the datasource.

 What are you using Entity Framework or Linq to SQL?

I am using Entity Framework.

I don't find OnCommand event of linkbutton delete in GridView of list.aspx .

 Hi Zzdfc, your best bet is to handle the EntityDataSource's OnDeleting event e.g:

protected void GridDataSource_Deleting(object sender, EntityDataSourceChangingEventArgs e)
{
    var entity = e.Entity;
}

You can get the actual entity from e.Entity and then do what ever you want before letting the EDS finish the delete.

Hi sjnaughton:

    What code do it execute  after I click linkbutton "Delete" of grieview in list.aspx,please?

I want to know deeper, thanks!

 Hi Zzdfc, you could do domething like this:

protected void GridDataSource_Deleting(object sender, EntityDataSourceChangingEventArgs e)
{
    var entity = e.Entity as Employee;
    var DC = new Models.NorthwindDataContext();

    var log = new Log()
    {
         EntityID = entity.EmployeeID,
         TimeDeleted = DateTime.Now,
         DeletedBy = User.Id
    };
}

However if you wanted to just mark the employee as deleted instead of deleting them then you could USE SPROCS to replace default L2S or EF actions see:

EF: http://blogs.msdn.com/meek/archive/2008/03/26/ado-entity-framework-stored-procedure-customization.aspx

L2S: http://blog.benhall.me.uk/2008/01/custom-insert-logic-with-linq-to-sql.html