Why Does Code Cause Open Excel Files To Close
Jun 25, 2009
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].....
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Nov 9, 2010
I can do this using VBA, but I want to be able to create the code using a compiled VB programme, which can then be opened in Excel.
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Feb 15, 2009
I have a program that runs some code when i click a button on a form when done running the application ends. I want to automaticaly run the code when the users clicks on the exe. I have put the code that i want to run in the startup forms load event but that doesn't start
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Apr 27, 2008
Dont know how easy this would be, but basically I'm just wondering if there is any way in VB.net you can close open files on a remote PC.In my scenario the vb.net app would be running with domain admin permissions in most cases so would have access to things like the remote Computer Management console, which of course has the Open Files section in it which lets you close any open files on the remote machine its connected to.So I fugured there must be some way to do it in vb.net... I just dont know if its going to be more hassle than its worth and I dont really know where to start looking (ive used googled but not had much joy).
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Jul 25, 2011
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?
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Jun 11, 2011
I need to simple code in Vb.Net for Open / close USB Port (Windows 7) ...
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May 12, 2009
Upon my program startup, I need to see if an Excel 2003 file with a certain name is open and then control it (set a reference to it). Unfortunately, the path of the Excel file is not set; else I could just detect if that file was open. So I guess I need to somehow loop through all open instances of Excel; then once I set an Excel app reference to each instance I could loop through the workbook names... But how would one go about looping through open instances of Excel in VB.net 2008?
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Jan 21, 2012
My randomised image poll generates 6 csv files. Each csv files have the contents of three listboxes
Private Sub SaveButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles SaveButton.Click
Using sw As StreamWriter = New StreamWriter ("C:\Users\Riz\Pantfile.csv")
For i As Integer = 0 To ListBox1.Items.Count - 1
[code].....
1) how to assign column titles to each column? 2) How do I combine several csv files into an open excel file? I've looked at several things. There are no commas in my csv files. All values in columns.
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May 30, 2009
I have questions on this [FAQ's: OD] How do I open an existing Excel Workbook? I have playing around with the code little. Trying to mod the code to display the selected path and File name in the textbox I have on a form. I can to get it to work right
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Mar 4, 2011
In a program I'm working on, I want a "Loading..." dialog to close when it can't log in to a site using the username and password provided by the user. Basically, I have the code set up right because the function it is supposed to carry out when that occurs does work, but for some reason it ends up in some really weird stuff happening. In the Loading form, I have it set to do "Form1.Show()" and then "Me.Close()", assuming it would simply show the login form and then close the Loading form. However, when this happens, the Loading form closes, and then for only an instant Form1 shows, and then the Loading form shows and Form1 closes. This happens forever until I stop the debugging, and I can't seem to figure out why. Am I using the wrong method? What exactly does Me.Close() do anyways? All I want to do is close the form and open another
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Jul 20, 2010
I 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.
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Jun 25, 2009
We have an application written with VB .Net (framework 2) that needs to run both XP and Vista machines. The XP machines have office 2003 while the Vista machines have office 2007.The application needs to generate reports as excel files. But when the files are created with xls extension the office 2007 in vista doesn't like the extnesion and gives a message before opening file about the file format.Is there a way to ensure through code that the correct file extension supported by the office version on the machine is used.v
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Aug 18, 2011
I'm trying to copy multiple excel source files into one excel file. My current code is working only for 3 source files..If more than 3 files are there, it doesn't copy the data but creates blank work sheet in the output excel file. Lets say I have a source folder with 5 excel files. Each workbook contains one worksheet with data. It copies upto 3 worksheets along with data into output excel file.
Lets say excel1 contains A as work sheet, excel2 contains B as work sheet ,excel3 contains C as work sheet ,excel4 contains D as work sheet ,excel5 contains E as work sheet .Now my output excel file should look like..OutputExcel with A, B, C, D, E along with respective data.But my current code is giving output as A,B,C worksheets along with respective data but its creating blank sheet1,sheet2 in place of D & E.
SSIS Script Task Vb.Net Code:
Public
Sub Main()
Dim filePath
As
String =
[code].....
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Aug 3, 2011
I have VB 2008 Express installed in my PC. I downloaded a program source code written in VB6 but could not open the files. What do I need to do to get this codes displayed.
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Apr 17, 2012
ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0; Data Source='" + fileName + "'; Extended Properties=Excel 5.0"
Dim ExcelConnection As System.Data.OleDb.OleDbConnection
ExcelConnection = New System.Data.OleDb.OleDbConnection(ConnectionString)
Error occurs on line ExcelConnection.Open()External table is not in the expected format.
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Oct 21, 2009
In my program, I have a timer with a inteval set to 1000ms. The timer is executing a MySQL-command, and right now I'm opening and closing the connection each time.
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Feb 11, 2009
I would like to open the excel file after create the excel file. The creating file function is done, but the system unable to open the excel file. My coding as below:
Dim xlApp As Excel.Application
Dim xlWorkBook As Excel.Workbook
Dim misValue As Object = System.Reflection.Missing.Value
[code]....
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Jan 10, 2012
I'm trying to export a datagridview to Excel and open the Excel spreadsheet (not SAVE the worksheet).
Public Sub ExcelRpt(ByVal DgvName As GridView, ByVal url As String)
Dim xlApp As Microsoft.Office.Interop.Excel.Application
Dim xlWorkBook As Microsoft.Office.Interop.Excel.Workbook
Dim xlWorkSheet As Microsoft.Office.Interop.Excel.Worksheet
[code]....
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May 11, 2012
I have a VB.Net App that on ButtonRun_Click open Excel to get the "tab" and "column" then another buton that past content from textboxes. I get a "COMException was Unhandled" If I reopen excel it's in use.
Private Sub ButtonRun_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ButtonRun.Click
Dim MyExcel As New Excel.Application
[Code]....
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Jul 13, 2010
I have an application the contains several excel files bundled with it. I'm not opening the files and processing them within my application. These files contain a data-connection to reload all of the pivot-tables within each excel file. I have a 'link' on my form, that when clicked, it determines which file to open and calls a sub using filename and executing Process.Start(filename) for any excel file I want to open. I have no problems opening any one of the files and then exiting excel.
The problem is when I 'close' a file, but don't exit Excel; then try to open another file(clicking link on form)... it creates a new instance of Excel.
I know from experimenting that the fileopendialog form will 'reuse' an existing Excel instance, IF it does not already have a file open.
How can I do the same thing without using the fileopendialog?
I don't want the end-user to have access to the folders where these files live. That's why I have multiple 'links' on my form, one for each xls that already exists. I just want them to be able to click on a link and the xls file opens AND if they choose to merely 'close' a file and not exit... Don't create a new instance of Excel, but re-use the existing one.
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Mar 10, 2009
I took oledbconnection with excel file, after disposing this connection i m still unable to open that excel manually,It shows some access error.
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Aug 17, 2009
can't close open image
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Jun 3, 2010
I would like to close my appliaction and then open it based on a condition.Lets say I have a Lab1.EXE file, I want to close if the flag = True and then reopen it.
If ClFlag = True then
Application.Exit
---Then
RUN LAB1.EXE
Endif
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Oct 3, 2009
I never had problems with this before but now this ain't working right. What I want to do is open a new Form and close the Current Form that is already open. This code use to work for me
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May 20, 2012
I want to close form and open another one without termination of the application, when I try to open second form and close first one the application terminate.[code]...
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Jun 30, 2010
When I open my application I have the first form which opens as the Register form. When I press the Activate Button I want the MAIN form to open and I am using the code below as the last two line[code]...
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Sep 3, 2009
I'm developing a WinForms app in VB.NET, that handles sets of style data, and when the user clicks on another set's label, it prompts through a dialog "You are leaving this style preset to edit another one. keep changes on this one? [Yes] [No]".But, I'm facing the problem that, when the user clicks either option, and the dialog closes, everything has to be refreshed, and loading the form again seems a good option.[code]But as soon as that sub is called from the prompt, it crashes the application. (doesn't show an error in debug, simply crashes) How should I, from a given dialog, close the dialog, it's parent, and re-open it's parent? (which triggers all the Dialog_Load() code of the parent)
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Oct 9, 2010
Any code I could get that would Open + Close a .bat or .cmd file? Not ALL .bat / .cmd files that are open, but just ONE (runserver.bat / runserver.cmd).
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Jan 5, 2010
i want to open and close com ports in vb.net and send data through ports.
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Jun 4, 2010
Is it possible to issue a Open CD and a Close CD using VB.net? Are there any examples of code I could see or articles? Thanks for you help, in what seems to be such a trivial matter. (I know though that the simpler the function the more code seems to be
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