Convert list details to array c#

Question

I'm trying to convert my list to a string array. My list is contains the following:

public class AcctList
{
    public string sRole { get; set; }
    public bool bIsPrimary { get; set; }
    public int iDayNo { get; set; }
    public bool bIsAirportMeetGreet { get; set; }
    public bool bIsSeaportMeetGreet { get; set; }
}

I then try to convert the list to a string array by doing the following:

 List<AcctList> userAccount = AccountBLL.GetUserInfoListByName(sUser);

String[] array = userAccount.ToArray();

However I cannot convert the list to an array. What can I do so that my list can be converted to an array?

Answer 1

That's because calling the ToArray() method will create an array of the type of the list, in this case, a AcctList[]. If you want to convert it to a string representation, you need to say HOW. One example could be using LINQ with the Select() method, like userAccount.Select(x => x.ToString()).ToArray() or userAccount.Select(x => x.sRole).ToArray().

Now, if you want to show information more than sRole you could use the first method and make your class override the ToString() method. Alternatively, you could format directly in the lambda expression. For example, userAccount.Select(x => String.Format("Role={0},IsPrimary={1}", x.sRole, x.bIsPrimary).

Answer 2

Here is the modified class, you have to override your "ToString" method.

public class AcctList
{
    public string sRole { get; set; }
    public bool bIsPrimary { get; set; }
    public int iDayNo { get; set; }
    public bool bIsAirportMeetGreet { get; set; }
    public bool bIsSeaportMeetGreet { get; set; }

    public override string ToString()
    {
        return base.ToString();
        //return your desired string here
    }
}

Then using Linq select the ToString of each object.

string[] strings = userAccount.Select(p => p.ToString()).ToArray();

Hope this helps