How do you programmatically break up one Excel document into several while still maintaining each cell's style and format?

m trying to break one large Excel spreadsheet into several. I've made good progress, but I'm running into 开发者_StackOverflow社区some problems. Specifically, the values that get copied over don't retain their format (for instance, 40322 instead of 5/24/2010 and -101 instead of (101.00) ). I've tried using the style (see below) but that doesn't even get me the font, let alone the number format. Any help or a poke in the right direction would be appreciated.

There are 2 loops, one for row, one for column.

destinationSheet.Cells[i, j].Style = sourceSheet.Cells[i, j].Style;

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Instead of looping for each cell, you can copy/paste the entire range of cells using the pastespecial method.

http://msdn.microsoft.com/en-us/library/microsoft.office.tools.excel.namedrange.pastespecial(VS.80).aspx