Top "Nullable" questions

Nullable property to entity field, Entity Framework through Code First

Using the data annotation Required like so: [Required] public int somefield {get; set;} Will set somefield to Not Null in …

entity-framework asp.net-mvc-3 code-first nullable

The type 'string' must be a non-nullable type in order to use it as parameter T in the generic type or method 'System.Nullable<T>'

Why do I get Error "The type 'string' must be a non-nullable value type in order to use it as …

c# nullable

C# nullable string error

private string? typeOfContract { get { return (string?)ViewState["typeOfContract"]; } set { ViewState["typeOfContract"] = value; } } Later in the code I use it like …

c# nullable

Best way to check for nullable bool in a condition expression (if ...)

I was wondering what was the most clean and understandable syntax for doing condition checks on nullable bools. Is the …

c# coding-style nullable

c# why can't a nullable int be assigned null as a value

Explain why a nullable int can't be assigned the value of null e.g int? accom = (accomStr == "noval" ? null : Convert.…

c# nullable

Can't find @Nullable inside javax.annotation.*

I want use @Nullable annotation to eliminate NullPointerExceptions. I found some tutorials on the net, I noticed that this annotation …

java annotations nullpointerexception nullable null-pointer

How to change a PG column to NULLABLE TRUE?

How can I accomplish this using Postgres? I've tried the code below but it doesn't work: ALTER TABLE mytable ALTER …

sql postgresql nullable

Convert nullable bool? to bool

How do you convert a nullable bool? to bool in C#? I have tried x.Value or x.HasValue ...

c# nullable

How to set null to a GUID property

I have an object of type Employee which has a Guid property. I know if I want to set to …

c# guid nullable

What's the difference between 'int?' and 'int' in C#?

I am 90% sure I saw this answer on stackoverflow before, in fact I had never seen the "int?" syntax before …

c# syntax types nullable