I am glad to hear that I could help you. The RowVersion was really needed in the exmple for the optimistic locking. I took the example from the project where the data will be hold on the Microsoft SQL Server and every row in the database has additional column with the non-nullable value of the type timestamp (http://msdn.microsoft.com/en-us/library/ms182776.aspx for details).
On every Edit operation in the jqGrid the value from the RowVersion will be send to the server automatically because the RowVersion column I defined with
option. So the value could be used for the optimistic locking. To use RowValue also in Delete operation I had to add the RowValue manualy inside of onclickSubmit as I described befor.
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