Hi,

IMO, since ArrayList isn't implementing IBindingList interface there is a
problem with adding and removing its items in DataGrid. You could create
your own list and implement IBindingList there in order to solve this
problem. Another quick workaround is to "rebind" arraylist each time you
adding a new row. Here's an example:

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ArrayList mList = new ArrayList();

{...}

mList.Add(new MyItem(...));
dataGrid1.DataSource = null;
dataGrid1.DataSource = mList;
dataGrid1.Select(mList.Count-1);

where dataGrid1 is
System.Windows.Forms.DataGrid
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hope this helps

Best regards, Serge Gubenko