I 've an ArrayList and to join all its elements with a separator in one string I m using...
Dim s As String = String.Join(",", TryCast(myArrayList.ToArray(GetType(String)), String()))
however, I would know if there is a smarter/shorter method to get the same result, or same code that looks better...
Thank You in advance,
Max
In Framework 4 it is really simple:
var s = string.Join(",", myArrayList);
In 3.5 with LINQ's extension methods:
var s = string.Join(",", myArrayList.Cast<string>().ToArray());
These are shorter but not smarter.
I have no idea how they should be written with VB.NET.
String.Join(String, Object[]) was introduced in .NET Framework 4.I know this is an old question, but since I've had to work this out for myself today, I thought I'd post the VB.Net solution I came up with:
Private Function MakeCsvList() As String
Dim list As New List(Of String)
list.Add("101")
list.Add("102")
Return Strings.Join(list.ToArray, ",")
End Function
I would make it an extension method of ArrayList e.g.
public static string ToCsv(this ArrayList array)
{
return String.Join(",", TryCast(array.ToArray(GetType(String)), String()))
}
Usage
string csv = myArrayList.ToCsv();
