Hi.

I'm making a WinForms application in VB.NET, and have a problem with a datagrid filled from an arraylist containing the objects i want to display in the datagrid.

The datagrid is filled correctly from the arraylist when the form is loaded, but there is some strange error here. When I click inside the datagrid, and then click on another controll on the form, I get the following errormessage:

    Error when committing the row to the original data store.
    Index was out of range. Must be non-negative and less than the size og the collection.
    Parameter name: index Do you want to correct the value?

The datagrid is readonly, and I only want to be able to select a row in it. Can anyone help me with this?

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torisch
Tromsø - Norway

Implemented a currencymanager to update the grid, and the problem was gone!

U need to create a primary key at the top where the page load section lies...follow by typing the primary key field in the "datakeyitem" at your datagrid's properties box. I had encountered the same problem before and it can be solved by this way. Cheers!

Hi,

I'm having exactly the same problem. You say you implemented a CurrencyManager - what do you mean by this? I'm setting the data source of the grid, which behind the scenes will create a CurrencyManager for the data source, but I've not had to use it. Do you mean you managed to create your own type of CurrencyManager,or manage to replace the one that got created automatically?

Also, there is no DataKeyItem property for the DataGrid.