This runs correctly, but Excel remains active after close.
If I don't create the range objects below, everything seems to work (with no output of course). Does anyone have any idea on how to keep Excel from staying in memory. Also... in the tests I'm running, I do not make the application visible.[code]...
How can I make this program not to give me the results for the quit command input of -999 but rather just to quit without the results?
Sub Main()
Dim TempIncelsius As Double
Dim TempInput As Double
Dim Formula As Double
[CODE]...
So I have a little gui that will read a given spreadsheet and list all the "valid" sheets. This happens when a user presses a button.[code]...
View 17 RepliesI'm trying to create an excel file and load headers into the first row and then save the file to the local computer for later use. All of that works fine, but for some reason the "EXCEL" process won't quit. I have read through the tutorial written by Mike R and I have even tried just copying and pasting the code from the tutorial into my project, but to no avail. I should also note that I have not yet tried the "Extreme Measures" listed in the post, though at this point I am tempted to.
Code:
Dim ExcelApp As Excel.Application
Dim ExcelWorkBook As Excel.Workbook
[code]....
I have searched all the code here I can find. I have added a bunch of code that some said should fix the problem. but it persists.
Given the code below, I open a small .xml file and then try to save it as a .XLS file. Should work just fine. When I monitor Task manager, the instance of Excel shows up immediately. But despite all the code I have added, it still won't go away, even if I exit the application. And if I run the process twice, I get multiple copies of Excel in task manager.
If the instance of Excel in the task manager went away when I exited my app, I would assume that there was some reference that was instantiated (behind the scene maybe) that persists until then. But this is not the case.[code]...
So i am writing something for work, and i was roaming the internet to see how to do it in vb.net, but it seems to really not have many hits. vb.net doesnt recognize Declare and all information points to things that say Private Declare Function [info]What i was wanting to do is to check if a computer has a DSN card in system DSN's, if it has it use the information and connect, otherwise, quit the program.
Do you know where i can find how to do this? I just need to check for the existance, i dont need to make them.All of my search results, while seemingly useful, were not written for vb.net I want to get something up here specifically for vb.net so we can get more search hits. i find more information, i will post it, but it doesnt seem to be going too far in the vb.net department, as it is in .net
VB.NET: What is the best way to ensure that a particular object may be instantiated only once during program execution?
View 3 RepliesI need to access the current instance of MS Excel. To do that, I wrote the following code:
Imports Excel = Microsoft.Office.Interop.Excel
Imports System.Diagnostics
Private _ExcelApp As Excel.Application
[Code].....
The code runs nice, but it has a problem: After the user close the Excel application (click button X - note: no other instance of Excel exists), if you open the Windows's task manager, its possible to see the process Excel.exe.
If I open and close the Excel application, there is no process Excel.exe, but if I run my code with the Excel application openned, after the user close the Excel application, the process Excel.exe isn't finished.
Public Class Form1
'Click event for the Calculate button!
Private Sub btnCalculate_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)
[code].....
I'm have a program (GUI) that interfaces with excel to execute macros. We're using Microsoft.Office.Interop.Excel to call/run the macros and this works great.What I can't figure out is a good way to cancel the macros from the GUI.One idea we had was to use the excel.application variable that runs the macros to write a "stop" value to a specific cell in the workbook, and in the macros (they are all mostly loops), check for the "stop" value in that cell. This crashes my GUI with this The program '[2188] BVLReports.vshost.exe: Managed' has exited with code -336589910 (0xebf00baa).And excel gets tied up, and won't respond. I know how to Exit Sub from within the macro if the "stop" value exists, so I don't need answers on how to check/cancel from inside the macro. Any ideas on a better way to write this "stop" value or a better way to cancel the macros externally?
View 2 RepliesI am making a program that NEEDS to be password protected, so i made a textbox with a code so that when the user enters the right password it lets you in. But if the user/person enters a wrong password 2X it will kick you out. So is there a way to keep the
View 3 RepliesIf e.CommandLine.Count > 0 Then
Dim IncomingCommand As String = e.CommandLine.Item(0).ToString
If IncomingCommand.Substring(0, 2) = "-1" Then
form1.close()
End If
End If
I am trying to make the program close if the -1 string is sent with the program. See my installer allows for me to run certain programs before it actually installs, but it doesn't shut down copies of the program itself. So I have a next startup instance set to shut the program down if the -1 is received. But if the program is not running it starts up instead. This is not desired. form1.close doesn't work. e.cancel = true doesn't work, etc etc. What can I do to make the program not start during this instance.
I am writing something to a excel file.So far so good. The only thing is the excel file is pop up.My question is how to make it invisible.I can open it directly from the hard drive when I want.
Public Sub WriteSpreadsheetFromArray(ByRef strOutputArray(,) As String, Optional ByVal strExcelFileOutPath As String = "")
Dim objxlOutApp As Excel.Application
Dim objxlOutWBook As Excel.Workbook[code]....
I have an application that allows the user to upload information from and Excel sheet. Since the user is more familiar with Excel, they prefer to do it this way. My software will close the workbook with Me.exApp.Workbooks.Close() , but if you have the task manager running, you can see the Excel application continues. I know the workbook is closed, b/c it asks if you would like to save changes. One instance of Excel will close when the program is exited, but the user normally builds a folder of Excel files and does them all at once. If 8 instances of Excel exist, only one will close with the program.
View 2 RepliesI have a [code]...
and even when i click yes, it closes the workbook. I would like it so that when i click yes, it shows the messagebox, but when i click no, it closes the workbook.
Dim xlApp As Microsoft.Office.Interop.Excel.Application
Dim xlBook As Microsoft.Office.Interop.Excel.Workbook
Dim xlSheet As Microsoft.Office.Interop.Excel.Worksheet
[code]....
I created the class below to open and gather the names of worksheets in an excel file. It does as it should in opening the file and returning the names of the each individual worksheet. Unfortunatly, I'm unable to close the file. This keeps the Excel.exe process hanging. Even after I attempt to close it at the bottom of this class the process still hangs. I have to manually goto Windows Task Manager and kill the process before I can use the file again. Even if I exit out of the application it still is out there.
[Code]....
I'm trying to automate writing some data to an Excel spreadsheet (Office 2010, VS 2010), save the spreadsheet, and then open the spreadsheet for the user to view and edit. When I save the spreadsheet, an instance Excel is left running in the Task manager. No matter how many spreadsheets I create, there is always instance in Task Manager left.[code]...
View 5 RepliesI don't know if this is a VB2005 or MS Excel issue so I will start with VB2005.
This is how I open an Excel file in VB2005[code]...
The problem is MS Excel always open a Book1.xlsx in addition to my Data.xlsx. As such closing Data.xlsx only closes Data.xlsx but not Book1.xlsx. Over time, as I continue to develope and debug my program, Task Manager would collect "countless" Book1.xlsx. Wth EXCEL.EXE still opened, I noticed that my VB2005 doesn't work "completely" right.
If this is a VB2005 issue then how do I "completely" close everything that is Excel? If this is a Windows issue, and if you could offer a solution as well
I am trying for the first time to automate Excel 2007 using VB.Net. I have VS 2008 Pro running on a machine with Windows XP 64-bit. All updates have been applied.
Like other posters, my problem started out with Excel.exe hanging up in the task manager, even after calling the Quit method. I have tried to recreate the suggestions of using the Garbage Collector and Marshal.FinalReleaseCOMObject methods. The problem that I get now is that after about 20 seconds during which I can still see EXCEL.EXE in the task manager, I always get the Microsoft message box stating: "Microsoft Office Excel has encountered a problem and needs to close." asking me if I want to send or not send a report.[code]...
I want catch excel file close event
Like this :
if Xapp.exit = true then...
i got vb.net application when i debug in task menager the EXCEL.EXE is closing correctly after all operations. When i scheduled it the excel.exe is running. What can be a reason of that?Sample of code :
Imports Excel = Microsoft.Office.Interop.Excel
Module Main
Public objApp = New Excel.Application
[code].....
I have a little program that I wrote to translate an Excel spreadsheet into a text file and pass it to another application. We found out Friday that if you give it a spreadsheet ina bad format, theprogram just hangs up: no errors and no more processing.It hangs and never finishes processing. If the format is correct, no problems.I wanted to add error logic to catch this condition.So after the try to open the spreadsheet, the first thing I do is check this one cell and if it is not right, it creates and error message, sets an indicator for the error,and closes the workbook.It hangs up on the close of the workbook.A spreadsheet with the expected format closes just fine. I even copied the close statement up to follow the detection of the error, but it hangs just like it did at a different point in the program.
I have been trying to copy the code here, but the question ends up either blank or doesn't get posted at all.The workbook is defined by oWB=oXL.Workbooks.Open("Excel.Application"). oWB.Close() is what hangs. That same code does not hang if the format is correct. How can the contents of the file affect the closing of it?
I am creating an excel file in my vb app. Below is the code I am using to do this. But when the application is closed, I still have an instance of Excel running in the background. How do i close it? I can do it with the xlWBook but not the xlApp.
'create empty excel file
xlApp = CType(CreateObject("Excel.Application"), Microsoft.Office.Interop.Excel.Application)
[Code].....
i know this is a big problem for a lot of people and there are posts everywhere..below, should this complete and close and terminate excel correctly? or am i missing something.
[Code]...
I need code to save the opened excel book (save as) and close it.
View 1 RepliesI want to save the opened excel book and close it. My code is given below but i found errors in that code .
xlBook.SaveAs (strTargetFile)
xlBook.Saved = True
xlBook.Close
Here is the problem: I have written an application that opens an excel file, copys a chart to the clipboard, then closes the excel file. It works fine except under a very special condition. If the user has an excel file open and then runs my application, the open excel file closes. To make this more confusing, if the user then reopens an excel file and runs my application again, everything works fine. It will continue to work fine untill the user reboots his or her computer. Then it will occur again one time
Here is the section of code I found the problem is in:
Private Sub Get_R1C1_Image() 'Gets excel data to display
Dim objXLS As Object = CreateObject("Excel.Application")
[code].....
I have an external (3rd party) EXE which I start from my app, which reads data from the user and creates a corresponding registry key with the information, then exits. I then need to read those registry values from my main application.
I start the app with:
Process.Start(My.Computer.FileSystem.SpecialDirectories.Temp & "GatherInfo.exe")
I need to read those registry values AFTER that EXE has quit - so I know they've been created. At the moment I'm just making my main app sleep after that process has been started:
System.Threading.Thread.Sleep(1000)
And then checking for the reg values. I'm worried this won't work for different users however, as the speed of the computer will determine how long the process takes to start and exit.
In the code below, I open excel file, when I try to enter some values into excel cells, and close it afterwards. For some reasons excel process is still active in task manager. I am releasing objects, quiting application like for other excel files in my program, but in this specific example can't do this. The code below is written in Visual Studio 2010, windows 7.
Imports Microsoft.Office.Interop
Public Class Form1
Public MainPath As String = System.IO.Directory.GetCurrentDirectory()
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
[Code] .....