http://msdn.microsoft.com/library/en-us/vbaxl11/html/xlmthSaveAsXMLData.asp?frame=true
http://msdn.microsoft.com/library/en-us/vbaxl11/html/xlmthSaveAs1.asp?frame=trueFileFormat Property
XlFileFormat can be one of these XlFileFormat constants.
xlCSV
xlCSVMSDOS
xlCurrentPlatformText
xlDBF3
xlDIF
xlExcel2FarEast
xlExcel4
xlAddIn
xlCSVMac
xlCSVWindows
xlDBF2
xlDBF4
xlExcel2
xlExcel3
xlExcel4Workbook
xlExcel5
xlExcel7
xlExcel9795
xlHtml
xlIntlAddIn
xlIntlMacro
xlSYLK
xlTemplate
xlTextMac
xlTextMSDOS
xlTextPrinter
xlTextWindows
xlUnicodeText
xlWebArchive
xlWJ2WD1
xlWJ3
xlWJ3FJ3
xlWK1
xlWK1ALL
xlWK1FMT
xlWK3
xlWK3FM3
xlWK4
xlWKS
xlWorkbookNormal
xlWorks2FarEast
xlWQ1
xlXMLSpreadsheet
http://msdn.microsoft.com/library/en-us/vbaxl11/html/xlmthSaveAs1.asp?frame=trueFileFormat Property
XlFileFormat can be one of these XlFileFormat constants.
xlCSV
xlCSVMSDOS
xlCurrentPlatformText
xlDBF3
xlDIF
xlExcel2FarEast
xlExcel4
xlAddIn
xlCSVMac
xlCSVWindows
xlDBF2
xlDBF4
xlExcel2
xlExcel3
xlExcel4Workbook
xlExcel5
xlExcel7
xlExcel9795
xlHtml
xlIntlAddIn
xlIntlMacro
xlSYLK
xlTemplate
xlTextMac
xlTextMSDOS
xlTextPrinter
xlTextWindows
xlUnicodeText
xlWebArchive
xlWJ2WD1
xlWJ3
xlWJ3FJ3
xlWK1
xlWK1ALL
xlWK1FMT
xlWK3
xlWK3FM3
xlWK4
xlWKS
xlWorkbookNormal
xlWorks2FarEast
xlWQ1
xlXMLSpreadsheet
OleCnn.Open();OleDbDataAdapter Oleda=new OleDbDataAdapter("Select * from [Sheet1$]",OleCnn);DataSet ds=new DataSet();
Oleda.Fill(ds);
ds.WriteXml(@"f:\123.xml");OleCnn.Close();