Excel process remains open after interop; traditional method not working

Question

I\'m running into an issue with some code I\'m debugging. Excel interop is used to extract some values from a workbook; however, Excel remains open after the program has exi

Answer 1

This code works for me.

//Declare separate object variables
Excel.Application xlApp = new Excel.Application();
Excel.Workbooks xlWorkbooks = xlApp.Workbooks;
Excel.Workbook xlWorkbook = xlWorkbooks.Add(Missing.Value);
Excel.Worksheet xlWorksheet = (Excel.Worksheet)xlWorkbook.Worksheets.get_Item(1);

//Create worksheet

xlWorkbook.Close(false, Missing.Value, Missing.Value);
xlWorkbooks.Close();
xlApp.Quit();

Marshal.FinalReleaseComObject(xlWorksheet);
Marshal.FinalReleaseComObject(xlWorkbook);
Marshal.FinalReleaseComObject(xlWorkbooks);
Marshal.FinalReleaseComObject(xlApp);

xlWorksheet = null;
xlWorkbook = null;
xlWorkbooks = null;
xlApp = null;

GC.Collect();

This article from Microsoft has some good information regarding this issue.