Question

When user push update button DataBound event starting. How to lock this event? It’s take much time to wait when gridview enumerates every row.

Answer 1

You should not DataBind your GridView on postbacks. So just wrap it in a !IsPostBack:

protected void Page_Load(Object sender, EventArgs e)
{
    if(!IsPostBack)
    { 
        DataBindGridView();
    }
}