Object.GetType() is never System.DateTime?

Question

Code line below prints System.Datetime

log.InfoFormat("{0}", row[2].GetType());

But row[2].GetType() is never equals to System.DateTime in condition below.

f.TestDate = (row[2].GetType() is System.DateTime) ? f.TestDate = (System.DateTime)row[2] : f.TestDate = DateTime.MinValue;

Why?

Possible duplicate of [Type Checking: typeof, GetType, or is?](https://stackoverflow.com/questions/983030/type-checking-typeof-gettype-or-is) — Heretic Monkey, Oct 07 '18 at 17:04

score 5 · Answer 1 · answered Oct 07 '18 at 17:00

5

row[2].GetType() is System.DateTime

does not check whether row[2] is of the type System.DateTime but whether the Type instance returned by GetType() is (which it obviously isn't)

Just use

row[2] is System.DateTime

answered Oct 07 '18 at 17:00

adjan

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Actually, his line can be shortened to `f.TestDate = (row[2] as DateTime?) ?? DateTime.MinValue`. – ckuri Oct 07 '18 at 17:35

score 0 · Answer 2 · answered Oct 07 '18 at 17:01

0

You should use:

row[2].GetType() == typeof(DateTime)

or

row[2] is DateTime

answered Oct 07 '18 at 17:01

smolchanovsky

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Object.GetType() is never System.DateTime?

2 Answers2