Excel не работает application quit

When Application.Quit is encountered in a subroutine,
it will only stay in memory and continue to run lines under it
and will actually quit until it encounters a «Exit Sub».
When the normal «End Sub» at the primary level is encountered,
it will then also close Excel. But say if the workbook is somehow
closed before reaching the «Exit Sub», «End» or «End Sub» line, then
Excel will not close.

Solution is to create a Public variable called ToQuitNow
with initial False value
and change it to True where you want Excel to quit.
and test right after to see if it is true, then return to previous Sub level
by «Exit Sub» or «End» to quit right away,
and do the same at every subrountine level where
it is expected to return from the deeper subroutine.
When it gets back to the primary level,
then a final «Exit Sub» will actually terminates Excel.
If you do not want Excel to ask for saving changes made,
add line «ThisWorkbook.Saved = True» right after Application.Quit,
or before the final «Exit Sub» at the Primary level
and Excel will quit without saving.

Try the following test below, just run «Test»

Public ToQuitNow As Boolean

Sub Test()

ToQuitNow = False ' initialize with False value
Call SecondSub
MsgBox ("Primary level here. Back from SecondSub")
If ToQuitNow = True Then
    Exit Sub 'will actually quit Excel now if True
End If
MsgBox ("This line will not run if ToQuitNow is True")
End Sub

Sub SecondSub()

MsgBox ("SecondSub here")
Call ThirdSub
MsgBox ("SecondSub here. Back from ThirdSub")
If ToQuitNow = True Then
    Exit Sub ' will return to Main level if True
End If
MsgBox ("This line from SecondSub will not run if ToQuitNow is True")
End Sub

Sub ThirdSub()

MsgBox ("ThirdSub here")
Call FourthSub
MsgBox ("ThirdSub here. Back from FourthSub")
If ToQuitNow = True Then
    Exit Sub ' will return to SecondSub if True
End If
MsgBox ("This line from ThirdSub will not run if ToQuitNow is True")
End Sub

Sub FourthSub()

MsgBox ("FourthSub here")
Application.Quit
ThisWorkbook.Saved = True ' Excel will think changes already saved _
and will quit without saving
ToQuitNow = True ' activate Quit
If ToQuitNow = True Then
    MsgBox ("Quit command executed in FourthSub")
    Exit Sub ' will return to ThirdSub if True
    'Can also put in End in above line to quit right away

End If
MsgBox ("This line from FourthSub will not run if ToQuitNow is True.")
End Sub

Когда Application.Quit встречается в подпрограмме, он остается только в памяти и продолжает выполнять строки под ним и фактически завершает работу до тех пор, пока не встретит «Exit Sub». Когда встречается обычный «End Sub» на основном уровне, он также закрывает Excel. Но скажем, если рабочая книга каким-то образом закрывается до достижения строки «Exit Sub», «End» или «End Sub», Excel не закроется.

Решение состоит в том, чтобы создать общедоступную переменную с именем ToQuitNow с начальным значением False и изменить ее на True там, где вы хотите закрыть Excel. и проверьте сразу после этого, чтобы убедиться, что это правда, затем вернитесь на предыдущий подуровень с помощью «Exit Sub» или «End», чтобы выйти сразу, и сделайте то же самое на каждом уровне подпрограммы, где ожидается возврат из более глубокой подпрограммы. Когда он вернется на основной уровень, последний «Exit Sub» фактически закроет Excel. Если вы не хотите, чтобы Excel запрашивал сохранение внесенных изменений, добавьте строку «ThisWorkbook.Saved = True» сразу после Application.Quit или перед последним «Exit Sub» на начальном уровне, и Excel завершит работу без сохранения.

Попробуйте следующий тест ниже, просто запустите «Тест»

      Public ToQuitNow As Boolean

Sub Test()

ToQuitNow = False ' initialize with False value
Call SecondSub
MsgBox ("Primary level here. Back from SecondSub")
If ToQuitNow = True Then
    Exit Sub 'will actually quit Excel now if True
End If
MsgBox ("This line will not run if ToQuitNow is True")
End Sub

Sub SecondSub()

MsgBox ("SecondSub here")
Call ThirdSub
MsgBox ("SecondSub here. Back from ThirdSub")
If ToQuitNow = True Then
    Exit Sub ' will return to Main level if True
End If
MsgBox ("This line from SecondSub will not run if ToQuitNow is True")
End Sub

Sub ThirdSub()

MsgBox ("ThirdSub here")
Call FourthSub
MsgBox ("ThirdSub here. Back from FourthSub")
If ToQuitNow = True Then
    Exit Sub ' will return to SecondSub if True
End If
MsgBox ("This line from ThirdSub will not run if ToQuitNow is True")
End Sub

Sub FourthSub()

MsgBox ("FourthSub here")
Application.Quit
ThisWorkbook.Saved = True ' Excel will think changes already saved _
and will quit without saving
ToQuitNow = True ' activate Quit
If ToQuitNow = True Then
    MsgBox ("Quit command executed in FourthSub")
    Exit Sub ' will return to ThirdSub if True
    'Can also put in End in above line to quit right away

End If
MsgBox ("This line from FourthSub will not run if ToQuitNow is True.")
End Sub

I have a small problem that I can’t seem to figure out. I am saving a DataGridView (it’s contents) to an xls file. I have no problem in doing so except in my task manager its still showing up that it’s running. I have called:

  xlApp.Application.Quit() 

This is declared as:

  Dim xlApp As New excel.Application

This seems to not work, BUT this is the same way I quit when I let the user choose to export it to a Word Document. Im not sure where I am going wrong…

Here is my complete code

Imports Word = Microsoft.Office.Interop.Word
 Imports Excel = Microsoft.Office.Interop.Excel

 Public Class Form1

Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
    For x As Integer = 1 To 3500
        DataGridView1.Rows.Add(New Object() {"r" & x.ToString & "c1", "r" & x.ToString & "c2", "r" & x.ToString & "c3", "r" & x.ToString & "c4", "r" & x.ToString & "c5"})
    Next
End Sub

Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
    exportToWord (DataGridView1)
End Sub

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
    Dim xlApp As New Excel.Application
    Dim xlWorkBook As Excel.Workbook
    Dim xlWorkSheet As Excel.Worksheet
    'Dim misValue As Object = System.Reflection.Missing.Value


    xlWorkBook = xlApp.Workbooks.Add
    xlWorkSheet = DirectCast(xlWorkBook.Sheets("sheet1"), Excel.Worksheet)

    xlApp.Visible = True

    Dim headers = (From ch In DataGridView1.Columns _
                  Let header = DirectCast(DirectCast(ch, DataGridViewColumn).HeaderCell, DataGridViewColumnHeaderCell) _
                  Select header.Value).ToArray()
    Dim headerText() As String = Array.ConvertAll(headers, Function(v) v.ToString)

    Dim items() = (From r In DataGridView1.Rows _
          Let row = DirectCast(r, DataGridViewRow) _
          Where Not row.IsNewRow _
          Select (From cell In row.Cells _
              Let c = DirectCast(cell, DataGridViewCell) _
              Select c.Value).ToArray()).ToArray()

    Dim table As String = String.Join(vbTab, headerText) & Environment.NewLine
    For Each a In items
        Dim t() As String = Array.ConvertAll(a, Function(v) v.ToString)
        table &= String.Join(vbTab, t) & Environment.NewLine
    Next
    table = table.TrimEnd(CChar(Environment.NewLine))
    Clipboard.SetText (table)

    Dim alphabet() As Char = "abcdefghijklmnopqrstuvwxyz".ToUpper.ToCharArray

    Dim range As excel.Range = xlWorkSheet.Range("B2:" & alphabet(headerText.Length) & (items.Length + 2).ToString)

    range.Select()
    xlWorkSheet.Paste()

    range.Borders(Excel.XlBordersIndex.xlDiagonalDown).LineStyle = Excel.XlLineStyle.xlLineStyleNone
    range.Borders(Excel.XlBordersIndex.xlDiagonalUp).LineStyle = Excel.XlLineStyle.xlLineStyleNone
    With range.Borders(Excel.XlBordersIndex.xlEdgeLeft)
        .LineStyle = Excel.XlLineStyle.xlContinuous
        .ColorIndex = 1 'black
        .TintAndShade = 0
        .Weight = Excel.XlBorderWeight.xlMedium
    End With
    With range.Borders(Excel.XlBordersIndex.xlEdgeTop)
        .LineStyle = Excel.XlLineStyle.xlContinuous
        .ColorIndex = 1 'black
        .TintAndShade = 0
        .Weight = Excel.XlBorderWeight.xlMedium
    End With
    With range.Borders(Excel.XlBordersIndex.xlEdgeBottom)
        .LineStyle = Excel.XlLineStyle.xlContinuous
        .ColorIndex = 1 'black
        .TintAndShade = 0
        .Weight = Excel.XlBorderWeight.xlMedium
    End With
    With range.Borders(Excel.XlBordersIndex.xlEdgeRight)
        .LineStyle = Excel.XlLineStyle.xlContinuous
        .ColorIndex = 1 'black
        .TintAndShade = 0
        .Weight = Excel.XlBorderWeight.xlMedium
    End With
    With range.Borders(Excel.XlBordersIndex.xlInsideVertical)
        .LineStyle = Excel.XlLineStyle.xlContinuous
        .ColorIndex = 1 'black
        .TintAndShade = 0
        .Weight = Excel.XlBorderWeight.xlThin
    End With
    With range.Borders(Excel.XlBordersIndex.xlInsideHorizontal)
        .LineStyle = Excel.XlLineStyle.xlContinuous
        .ColorIndex = 1 'black
        .TintAndShade = 0
        .Weight = Excel.XlBorderWeight.xlThin
    End With

    'xlApp.Visible = True

    xlWorkBook.SaveAs("C:UsersCoDeXeRDesktopWord1.xls", True)
    xlWorkBook.Close()
    xlApp.Application.Quit()

    ReleaseObject(xlWorkSheet) '<~~~ Added as per comment from deleted post
    ReleaseObject (xlWorkBook)
    ReleaseObject (xlApp)


End Sub

Public Sub exportToWord(ByVal dgv As DataGridView)
    ' Create Word Application
    Dim oWord As Word.Application = DirectCast(CreateObject("Word.Application"), Word.Application)

    ' Create new word document
    Dim oDoc As Word.Document = oWord.Documents.Add()


    Dim headers = (From ch In dgv.Columns _
                  Let header = DirectCast(DirectCast(ch, DataGridViewColumn).HeaderCell, DataGridViewColumnHeaderCell) _
                  Select header.Value).ToArray()
    Dim headerText() As String = Array.ConvertAll(headers, Function(v) v.ToString)

    Dim items() = (From r In dgv.Rows _
          Let row = DirectCast(r, DataGridViewRow) _
          Where Not row.IsNewRow _
          Select (From cell In row.Cells _
              Let c = DirectCast(cell, DataGridViewCell) _
              Select c.Value).ToArray()).ToArray()

    Dim table As String = String.Join(vbTab, headerText) & Environment.NewLine
    For Each a In items
        Dim t() As String = Array.ConvertAll(a, Function(v) v.ToString)
        table &= String.Join(vbTab, t) & Environment.NewLine
    Next
    table = table.TrimEnd(CChar(Environment.NewLine))
    Clipboard.SetText (table)

    Dim oTable As Word.Table = oDoc.Tables.Add(oDoc.Bookmarks.Item("endofdoc").Range, items.Count + 1, headers.Count)

    oTable.Range.Paste()

    'make the first row bold, fs 14 + change textcolor
    oTable.Rows.Item(1).range.Font.Bold = &H98967E
    oTable.Rows.Item(1).range.Font.Size = 14
    oTable.Rows.Item(1).range.Font.Color = Word.WdColor.wdColorWhite

    'change backcolor of first row
    oTable.Rows.Item(1).range.Shading.Texture = Word.WdTextureIndex.wdTextureNone
    oTable.Rows.Item(1).range.Shading.ForegroundPatternColor = Word.WdColor.wdColorAutomatic
    oTable.Rows.Item(1).range.Shading.BackgroundPatternColor = Word.WdColor.wdColorLightBlue

    ''set table borders
    'With oTable.Range.Tables(1)
    '    With .Borders(Word.WdBorderType.wdBorderLeft)
    '        .LineStyle = Word.WdLineStyle.wdLineStyleSingle
    '        .LineWidth = Word.WdLineWidth.wdLineWidth100pt
    '        .Color = Word.WdColor.wdColorAutomatic
    '    End With
    '    With .Borders(Word.WdBorderType.wdBorderRight)
    '        .LineStyle = Word.WdLineStyle.wdLineStyleSingle
    '        .LineWidth = Word.WdLineWidth.wdLineWidth100pt
    '        .Color = Word.WdColor.wdColorAutomatic
    '    End With
    '    With .Borders(Word.WdBorderType.wdBorderTop)
    '        .LineStyle = Word.WdLineStyle.wdLineStyleSingle
    '        .LineWidth = Word.WdLineWidth.wdLineWidth100pt
    '        .Color = Word.WdColor.wdColorAutomatic
    '    End With
    '    With .Borders(Word.WdBorderType.wdBorderBottom)
    '        .LineStyle = Word.WdLineStyle.wdLineStyleSingle
    '        .LineWidth = Word.WdLineWidth.wdLineWidth100pt
    '        .Color = Word.WdColor.wdColorAutomatic
    '    End With
    '    With .Borders(Word.WdBorderType.wdBorderHorizontal)
    '        .LineStyle = Word.WdLineStyle.wdLineStyleSingle
    '        .LineWidth = Word.WdLineWidth.wdLineWidth050pt
    '        .Color = Word.WdColor.wdColorAutomatic
    '    End With
    '    With .Borders(Word.WdBorderType.wdBorderVertical)
    '        .LineStyle = Word.WdLineStyle.wdLineStyleSingle
    '        .LineWidth = Word.WdLineWidth.wdLineWidth050pt
    '        .Color = Word.WdColor.wdColorAutomatic
    '    End With
    '    .Borders(Word.WdBorderType.wdBorderDiagonalDown).LineStyle = Word.WdLineStyle.wdLineStyleNone
    '    .Borders(Word.WdBorderType.wdBorderDiagonalUp).LineStyle = Word.WdLineStyle.wdLineStyleNone
    '    .Borders.Shadow = False
    'End With
    ' Save this word document
    oDoc.SaveAs("C:UsersCoDeXeRDesktopWord1.doc", True)
    oDoc.Close()
    oWord.Application.Quit()
    'oWord.Visible = True

End Sub

Public Sub exportToExcel(ByVal dgv As DataGridView)

End Sub

Private Sub ReleaseObject(ByVal obj As Object)
    Try
        System.Runtime.InteropServices.Marshal.ReleaseComObject (obj)
        obj = Nothing
    Catch ex As Exception
        obj = Nothing
    Finally
        GC.Collect()
    End Try
End Sub

 End Class