This examples shows how to change the row and column headers or hide them in RadSpreadsheet.
The example shows two different custom header name rendering converters:
 - NumberedColumnsHeaderNameRenderingConverter which makes all column headers to be numbers (1, 2, 3,...) instead of letters (A, B, C,...)
 - DynamicHeaderNameRenderincConverter which makes row and column headers that intersect with the table data on scroling to contain the data
   from the first row and first column of the table.