So I use standard interface.
using Excel = Microsoft.Office.Interop.Excel;
// file save function
xlWorkBook.SaveAs("Bar Charts.xls", Excel.XlFileFormat.xlWorkbookNormal, misValue, misValue, misValue, misValue, Excel.XlSaveAsAccessMode.xlExclusive, misValue, misValue, misValue, misValue, misValue);
xlWorkBook.Close(true, misValue, misValue);
xlApp.Quit();
Everything is fine, but file appears here C:\Users\Dex\Documents. How can I change file destination true way? Don't want to move it after all.
Function described here http://msdn.microsoft.com/en-us/library/microsoft.office.tools.excel.workbook.saveas.aspx, but there is no such parameter.