c# nullable generic code example

Example: c# nullable generic

static void Main(string[] args)
{
    int? i = GetValueOrNull(null, string.Empty);
}


public static Nullable GetValueOrNull(DbDataRecord reader, string columnName) where T : struct
{
    object columnValue = reader[columnName];

    if (!(columnValue is DBNull))
        return (T)columnValue;

    return null;
}