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List<int> source = new List<int>();
List<int> contain = new List<int>();
source.AddRange(new[] {2,3,4,5});
contain.AddRange(new[] { 1, 5 });
var v = source.Intersect(contain);
Array.ForEach(v.ToArray(),i => MessageBox.Show(i.ToString()));
string s = " 80,81,83,82";
string[] s1 = s.Split(',');
int[] p = new int[s1.Count()];
for (int i = 0; i < s1.Count(); i++)
{
p.SetValue(Convert.ToInt32(s1[i]), i);
}
public IQueryable<tbQuestions> SelectQuestions(int[] p)
{
var result = from s1 in db.tbQuestions
where !p.Contains(s1.id) && s1.deleteFlag == 0
select s1;
return result;
}