C# ADO.NET: nulls and DbNull — is there more efficient syntax?

Question

I\'ve got a DateTime? that I\'m trying to insert into a field using a DbParameter. I\'m creating the parameter like so:

DbParameter         


        

Answer 1

If you're using C# 3.0 you can create an extension method to do this easy:

public static class DBNullableExtensions
{
    public static object ToDBValue(this Nullable value) where T:struct
    { 
        return value.HasValue ? (object)value.Value : DBNull.Value;
    }
}


class Program
{
    static void Main(string[] args)
    {
        int? x = null;

        Console.WriteLine(  x.ToDBValue() == DBNull.Value );
    }
}