Comparing object with Nothing in vb.net

Question

I have a code

Dim drQues As DataRow = dtQuestion.AsEnumerable()
             .First(Function(uqno) uqno.Field(Of Int32)("uniqueqno") = drqno("uniqueqno"))

I want to check if drQues is Nothing

I tried

If Not drQues <> Nothing THEN

but it says

<> is not defined for System.Data.DataRow and System.Data.DataRow

how can I check if there was a row for specified condition in linq?

Answer 1

如果未定义常规比较运算符，请使用Is或IsNot 。

If drQues Is Nothing Then