Loading an ASP.NET DropDownList

Question

From the examples below showing loading DropDownList in ASP.NET, which method is preferred and why?

Method 1:

Create an array of objects ListItemloaded with entity information, and use the method DropDownList.Items.AddRangeto load the list.

Method 2:

Create a collection of entity objects BindableList<T>and use the method DropDownList.DataSourceto load the list.

Method 3:

Create a collection of entity objects List<T>and use the method DropDownList.DataSourceto load the list.

Thanks in advance.

Answer 1

All methods are similar for the drop-down list, but have their pros and cons. Here are some short answers:

1 . 1, ​​, , .

: , ListItems. - ListItem, .

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2 , TwoWay. asp.net , .

: , BindableList IEnumerable, , DataBind.

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3 , , .net.

: , Method2, List IEnumerable, , DataBind.