c# - how to check whether dropdown list has all items in the given list -


i have got requirement have got list of strings , got dropdownlist items need check whether dropdownlist has items in give list of strings or not , need return bool condition ...

for purpose have done ....

public static bool getmactheditems(dropdownlist ddllist1, dropdownlist ddllist2, string matcheditem1, string  matcheditem2, string matcheditem3) {       bool results =true;       list<string> list1 = new list<string> {matcheditem1, matcheditem2, matcheditem3};       if (ddllist1.selectedvalue.tostring() == matcheditem1 && (list1.any(x => x.contains(ddllist2.selectedvalue.tostring()))))       {            results = false;        }       return results;                 }

but above condition checking whether dropdownlist selected value in list or not ....

i want entire items in dropdownlist in list or not

would 1 pls on ....

var allcontained = ddlcountry.items.cast<listitem>().select(item => item.value).all(item => lst.contains(item.tostring());

try - performance stop iterating once condition broken , return false using combination of all contains.


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