I developed winform application that read from excel and transform it to text files. I used Microsoft.Office.Interop.Excel library in order to work with Excel.
Here is my code:
private Excel.Application excel = null;
private Excel.Sheets sheets = null;
private Excel.Workbook excelWorkbook = null;
private Excel.Workbooks excelWorkbooks = null;
private Excel._Worksheet worksheet = null;
private Excel.Range usedRange = null;
public ExcelFacade() { }
public ExcelFacade(string fileName)
{
excel = new Excel.Application();
excelWorkbooks = excel.Workbooks;
excelWorkbook = excelWorkbooks.Open(fileName, 0, true, 5, "", "", true, Microsoft.Office.Interop.Excel.XlPlatform.xlWindows, "\t", false, false, 0, true, 1, 0);
sheets = excelWorkbook.Sheets;
}
After I finished work with Excel I call next method (from here):
public void Dispose()
{
foreach (Microsoft.Office.Interop.Excel.Worksheet sheet in sheets)
{
while (Marshal.ReleaseComObject(sheet) != 0) { }
}
excelWorkbook.Close();
excelWorkbooks.Close();
excel.Quit();
var chromeDriverProcesses = Process.GetProcesses().
Where(pr => pr.ProcessName.ToLower().Contains("excel"));
foreach (var process in chromeDriverProcesses)
{
process.Kill();
}
//while (Marshal.ReleaseComObject(usedRange) != 0) { }
//while (Marshal.ReleaseComObject(worksheet) != 0) { }
while (Marshal.ReleaseComObject(sheets) != 0) { }
while (Marshal.ReleaseComObject(excelWorkbook) != 0) { }
while (Marshal.ReleaseComObject(excelWorkbooks) != 0) { }
//while (Marshal.ReleaseComObject(excel.Application) != 0)
//{ }
while (Marshal.ReleaseComObject(excel) != 0) { }
usedRange = null;
worksheet = null;
excelWorkbook = null;
excelWorkbooks = null;
sheets = null;
excel = null;
GC.Collect();
GC.WaitForPendingFinalizers();
GC.Collect();
GC.WaitForPendingFinalizers();
}
}
However, if I change excel and rerun my application, the updated excel is not taken by application and it looks like it read from old excel. Such behavior is look like caching and I have no idea how to disable it.
The aforementioned is strengthened by the fact that if I change something in my code, e.g. white space, and rebuild the application, it works brilliant and take right Excel file. Any suggestions?
