List.ConvertAll issues

Hi friends,

I dont really know where to place this question, so please, feel free to move it to the most appropiate forum.

I'm using DevExpress  gridView(ASPXGridView) and I have checkboxes in the first column. This control has a method that returns a List of all the selected items(just one column). In my case this column is made of integer values and I need it converted to strings values. The way I'm trying to achieve this is the following:

 string[] arrACPs = new string[gvResults.GetSelectedFieldValues("CAID").Count];

Converter<int,string> myconv = new Converter<int,string>(StringToInt);
arrACPs = gvResults.GetSelectedFieldValues("CAID").ConvertA ...