Looping through an array

[Moe Haroon]

I have been able to run a query and get the results in an Arraylist. Query returns 2 results
alist[0] and alist[1]
//OUTPUT
DBID,VERSION,DB _NAME,INSTANCE_ NAME,HOST_NAME
alist[0] == 806497854,10.2. 0.5.0,ALPHA,ALP HA,ALPHA-SERVE alist[1] == 3895980978,10.2 .0.1.0,BETA,BET A,BETA-SERVER
// END OF OUTPUT

as you can see from the output, within the alist[0] I have 5 ItemArray objects
I'm trying to get a checkbox populated with list of items from arraylist. I'm getting "Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index" error. here is the code

alist = new ArrayList();
            alist = (ArrayList)ProgramLogic.runsqlAL(sqltext, Form1.OraConn);
            // alist has 2 items 0 and 1
            // alist itemArray has 5 objects in each itemlist
            for ( int i = 0; i <= alist.Count;i++)
            {
                for (int j = 0; j <= (((DataRow)alist[i]).ItemArray.Count()); j++)
                {
                    MessageBox.Show("i is " + i.ToString() + "and j is " + j.ToString());
                    //avail_dbid_CB.Items.Add(((DataRow)alist[i]).ItemArray[j].ToString());
                }
            }

any help would be greatly appreciated

[Christian Binder]

You have to use i < ...Count instead of i <= ...Count. The same for j.

It's because when Count is 2, you would access array[0], array[1] and array[2] but array[2] doesn't exist.