how to split this value and store in arrey?

Dim TestArray() As String = Split(str, ",")

use as below

Dim str As String = ""
        For i As Integer = 0 To CheckBoxList1.Items.Count - 1
            If CheckBoxList1.Items(i).Selected Then
                If str = "" Then
                    str = CheckBoxList1.Items(i).Value
                Else
                    str += "," + CheckBoxList1.Items(i).Value
                End If
            End If
        Next
Dim arry As String() = str.Split(",")

Thanks,
-RG

just as a litte suggestion

Dim this as String()
this = CheckedListBox1.CheckedItems.Cast(Of String).ToArray

kinda the same as your Code, but gives already back the Array you want.



when you want the Array back to the seperated String..

Dim seperated as String = String.Join(",", this)