FlexSheetSample
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Shows a class that extends the C1FlexGrid to provide many Excel-like features.

This sample provides Excel-like features.

C1FlexSheet provides the following features:

- Multi-sheet tabbed interface:

The sheets are represented by tabs that appear below the grid, to the left
of the grid's horizontal scrollbar.

- Save and Load XLS files:

- Formula support:

The C1FlexSheet control can parse and evaluate Excel-style formulas. 
The engine currently supports 69 functions and is easily extensible.

- Row and Column Headers:

The C1FlexSheet control has a custom CellFactory that generates labels for
the column and row headers. Column headers display letters and row headers
display the row index.

- Pdf Export:

The C1FlexGridBook control uses the C1.WPF.Pdf assembly and the GetPageImages
method to export the grid to Pdf files.

- Range Sorting:

The C1FlexSheet control provides range-based, unbound sorting.

- Enhanced Filtering:

The C1FlexGridBook control extends the standard column filtering capabilities in 
the C1FlexGrid to provide the following additional features:

<pre>
- sort control
- filtered value selection in the value filter editor
- resizable editor
- Excel appearance
</pre>

- Find/Replace

-Remove duplicates

-Insert Pictures

-Insert Charts

-Insert Sparklines

-Insert Comments

-Print Preview
