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LINQ Contains Case Insensitive
...problem? If fi.DESCRIPTION is null or description is null you're getting a C# null reference exception. It doesn't matter what the LINQ query converts to on the SQL side. Here's the proof: dotnetfiddle.net/5pZ1dY
– Marko
Oct 25 '17 at 20:45
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Which is preferred: Nullable.HasValue or Nullable != null?
...erence type" with "can be null", but that's a conceptual confusion. Future C# will have non-nullable reference types.
– Jim Balter
Nov 7 '16 at 23:33
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Convert List to List
...he latter.
This kind of conversion is called a "covariant" conversion. In C# 4 we will allow you to make covariant conversions on interfaces and delegates when the conversion is known to be always safe. See my blog articles on covariance and contravariance for details. (There will be a fresh one o...
Converting .NET DateTime to JSON [duplicate]
...eturns the number of milliseconds since Jan 1, 1970 (useful for converting C# dates to JS dates)
public static double UnixTicks(this DateTime dt)
{
DateTime d1 = new DateTime(1970, 1, 1);
DateTime d2 = dt.ToUniversalTime();
TimeSpan ts = new TimeSpan(d2.Ticks - d1.Ticks);
return ...
Language Books/Tutorials for popular languages
...
For C#:
CLR via C#
C# in Depth
share
edited Apr 2 '12 at 7:43
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Can I use a collection initializer for Dictionary entries?
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after C# 3.0 you can use var instead of the declaring type, or if leaving the declaring type can omit the new Dictio... -- stackoverflow.com/questions/5678216/…
– drzaus
Jan 13 '14 at 20:24
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Member '' cannot be accessed with an instance reference
I am getting into C# and I am having this issue:
10 Answers
10
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What is the maximum possible length of a .NET string?
...owed.
Now, here's something you're welcome to try yourself.
Create a new C# console app in Visual Studio and then copy/paste the main method here:
static void Main(string[] args)
{
Console.WriteLine("String test, by Nicholas John Joseph Taylor");
Console.WriteLine("\nTheoretically, C# sh...
What is the exact problem with multiple inheritance?
...e whether multiple inheritance should be included into the next version of C# or Java. C++ folks, who are fortunate enough to have this ability, say that this is like giving someone a rope to eventually hang themselves.
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Type of conditional expression cannot be determined because there is no implicit conversion between
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In C# 9 this is now allowed blog
Target typed ?? and ?
Sometimes conditional ?? and ?: expressions don’t have an obvious shared type between the branches. Such cases fail today, but C# 9.0 will allow them if there’s...