The ... should be replaced with the index of the row you want to change. The index for the first row is 0. Bear in mind that the datatable needs to be created and a row with the specified index must already exist. Otherwise you will encounter an exception.
For more information, please see
DataRowCollection.Item Property (Int32) (System.Data)[
^]
If the row does not yet exist, you should use the
NewRow
method to create one, see
DataTable.NewRow Method (System.Data)[
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