Gridview not populating while using a While() structure. C# ASP.Net

Question

I am having problems with this grid view. I am populating it with a query. However, it will not populate or even appear if I use a while(reader.Read()) structure. Without the

Answer 1

I guest you have set datasource to myList instead myReader

grdEvents.DataSource = myList;

Edit: You need to add other column in your list object.

while (myReader .Read ())
{
//myList-- Add other columns you need to display in the gridview
//As I don't know the your Data Reader column, I can't give you exact mylist object

 myList.Add(new TicketInfo{TicketCost = Convert.ToDecimal(myReader["TicketCost"]),NumTickets = Convert.ToInt32(myReader["NumTickets"])  });
}