public static List <SelectListItem> ToSelectListItem <T>(IEnumerable <T> enumerable, Func <T, string> getValue, Func <T, string> getText,
SelectListFirstElementType firstElement, string selectedValue)
{
List <SelectListItem> selectedList = new List <SelectListItem>();
string firtsText = SelectListFirstElementName.EMPTY;
switch (firstElement)
{
case SelectListFirstElementType.Empty:
break;
case SelectListFirstElementType.None:
firtsText = SelectListFirstElementName.NONE;
break;
case SelectListFirstElementType.Select:
firtsText = SelectListFirstElementName.SELECT;
break;
case SelectListFirstElementType.All:
firtsText = SelectListFirstElementName.ALL;
break;
}
selectedList.Add(new SelectListItem {
Text = firtsText, Value = string.Empty, Selected = (selectedValue == "" ? true : false)
});
if (enumerable != null)
{
var tempList = enumerable
.Select(x => new SelectListItem
{
Selected = (getValue(x) == selectedValue),
Text = getText(x),
Value = getValue(x)
})
.ToList();
selectedList.AddRange(tempList);
}
return(selectedList);
}
public static List <SelectListItem> ToSelectListItem <T>(SelectListFirstElementType firstElement)
{
return(ToSelectListItem <T>(null, null, null, firstElement, String.Empty));
}