Hello!
Thanks for the patch.
> .NET 3.5 does not throw a null reference exception on DateTime.TryParseExact
> if the first parameter is null.
>
> Attached is a test case and a fix for DateTime.cs
>
> Index: System/DateTime.cs
> ===================================================================
> --- System/DateTime.cs (revision 152377)
> +++ System/DateTime.cs (working copy)
> @@ -1164,6 +1164,9 @@
> result = new DateTime (0);
> if (format == null)
> return false;
> +
> + if (s == null)
> + return false;
>
> if ((style & DateTimeStyles.AllowLeadingWhite) != 0) {
> format = format.TrimStart (null);
> Index: Test/System/DateTimeTest.cs
> ===================================================================
> --- Test/System/DateTimeTest.cs (revision 152377)
> +++ Test/System/DateTimeTest.cs (working copy)
> @@ -2417,6 +2417,15 @@
> // bug #444103.
> DateTime.ParseExact ("12:00:00", "HH:mm:ss.FFFFFFF",
> null);
> }
> +
> + [Test]
> + public void TryParseExact_NullString ()
> + {
> + DateTime dt;
> + DateTime.TryParseExact(null,
> "yyyy'-'MM'-'dd'T'HH':'mm':'ss'Z'", CultureInfo.InvariantCulture,
> +
> DateTimeStyles.AssumeUniversal | DateTimeStyles.AdjustToUniversal, out dt);
> + Assert.AreEqual(default(DateTime), dt);
> + }
> #endif
> }
> }
>
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