How To Lunch Excel Using .net
Dec 1, 2009how to lunch MS Excel application by clicking on a btn using vb.net coding? Im trying to open up and display (with the click of a btn) an excel workbook that has already been created.
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Lunch Excel Using Program?
Jun 8, 2010I wanted to know if anyone know how to lunch MS Excel application by clicking on a btn using vb.net coding? Im trying to open up and display (with the click of a btn) an excel workbook that has already been created
View 2 RepliesFile Read Goes Out To Lunch
Sep 30, 2011I've finally gotten it to occur reliably on a 26 MB binary, compressed executable. The failure is characterized by Filescan executing "somewhere else and I am unable to determine where. Roughly execution saturates the 2 processor Extreme before and after the failure. I have isolated the failure to between lines 278 and 280 above.Why does it fail? Is there any fast way I can insure that it does not occur? I see a Try-catch block as being slow.
View 7 RepliesAdd Total Time + Lunch Time ?
Jul 23, 2010The web on adding TOTAL time, not just 7pm + 6pm etc. Essentially what I'm trying to do is add total time + lunch time. For example, 30:00 (30 hours) + 01:00 (1 hour) = 31:00 (31 hours). The input method is textboxes, which I'm willing to change if there's a better way;
txtTotalHours = 30
txtTotalMins = 00
txtLunchHours = 01
txtLunchMins = 00
I guess what I'm looking for is to take these strings, convert them to TIME and add them together. Theres a bit more to my project, but I'm sure if I can get this method down, I can figure out the rest. I can do this very easily in excel using [HH]:mm formatting.
Hook Excel - The Process Excel.exe Doesn't Finish After Close Excel
Jul 20, 2010I 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.
Use Excel APi (Interop.Excel) Without Installing MS Excel?
Jun 24, 2009can I use Excel APi (Interop.Excel) without installing MS Excel.
View 2 RepliesC# - Excel Interop Quitting The Excel Application Instance Makes Tests Fail?
Feb 23, 2011I want to encapsulate the use of Excel Interop to make it easier to use somehow in a reuseable library.So far, I have written some tests that work good altogether, except that between each test, I force Excel to quite so that it does have handle on the test file no more in order to be able to delete.Once I quit the application instance between after each of my tests, Excel seems to be no longer responding, causing Windows to display "Excel has stopped working and is looking for a solution"
message. This message lasts a few seconds, meanwhile Excel is closing, causing the hang on the file to occur and my tests to throw an exception like "Cannot access file because it is being used by another process..."
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Install Excel 12 Object Library In The Development Computer Without Installing Excel 2007?
May 12, 2009I am using VS .net 2003 and developing a program that calls Excel. The development computer only has Excel 2003, and the target machine only has Excel 2007. Would it be possible to install Excel 12 Object Library in the development computer without installing Excel 2007?
View 4 RepliesOffice Automation :: Excel File - Set A Reference To The Microsoft Excel 12.0 Object Library
Oct 6, 2009I'm trying to upgrade a VB6 app to VB 2008. I have read the article in the tutors corner about automating Excel from VB but I cannot get it to work. Heres what I have done:
1) set a reference to the Microsoft Excel 12.0 Object Library
2) Added "Imports Excel = Microsoft.Office.Interop.Excel" to the top of the module
3) in a routine I have added: Dim X As New Excel.Application Here's where I get an error: Error 75 'Application' is ambiguous in the namespace 'Microsoft.Office.Interop.Excel'.
VS 2008 VBNET2008 EXCEL 2003 - OLEDB To Retrieve EXCEL Data To DataReader?
Jan 22, 2011I am trying to retrieve the data from EXCEL 2003 spreadsheet from row 8 onwards because from Row 1 to Row 7 the row is merged columns from A1 to K1, A2 to K2, A3 to K3, A4 to K4, A5 to K5, A6 to K6, A7 to K7.
View 28 RepliesZip Code Is Dropping Leading Zero When Displayed On Excel. Export To Excel From XML To XSLT Transform?
Aug 16, 2010I am exporting data from vb.net to excel and it is dropping the leading zero when its displayed on excel. How can I avoid the dropping of leading zero? I read the solution of adding a single quote but it makes my excel sheet column ugly. Also users will complain if they see a single quote on zip code field.vb.net code
Response.AddHeader("content-disposition", attachment)
Response.ContentType = "application/vnd.ms-excel"
Response.Charset = ""
the stored procedure outputs XML and it is transformed by XSLT before it is displayed on EXCEL
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:template match="/">
<HTML>
[code]....
adding a single quote or manipulating excel sheet with column formatter (general/numbers ) etc. I don't want user to make any changes on excel to get the display properly when the excel is displayed from web page it should be all set with proper formatting. also we have no control over client excel software?
Excel Linked - Populate A Number Of Combo Boxes From An Excel Document
Jan 19, 2009i Have this code which populates a number of combo boxes from an excel document, the problem is that it only populates the 1st three lines, does anyone know why this is??
[Code]...
Export A Datagridview To Excel And Open The Excel Spreadsheet (not SAVE The Worksheet)?
Jan 10, 2012I'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]....
Office Automation :: Excel Program Leaves EXCEL.EXE Floating After Completion
Feb 24, 2012I am writing a program that loops through all of the sheets in an Excel workbook and saves each sheet as its own workbook. It turned out to be a bit trickier than I expected, since the Sheet.Copy method creates a strange object (see here for the MSDN discussion that I believe is relevant: [URL]. Anyway, I found a Stack Overflow post [URL] that got me to where I am, which is essentially complete, outside of one hanging EXCEL.EXE process that is left after the program completes, which I believe is a result of the sheet.copy method creating a new workbook (potentially a new application as well?). The other thing I run into, which I believe is related to this, is that even though I have my application set to visibility off, when I run the program, excel still opens up and is visible going through the steps.
Here is my code:
Code:
Imports System.Data
Imports System.IO
Imports Microsoft.Office.Interop
[CODE]...
Now I think the problem comes from the end of the loop, where I try to close the export file and the new worksheet it creates:
Code:
'close excel and release com objects
System.Runtime.InteropServices.Marshal.ReleaseComObject(exportsheet)
exportsheet = Nothing
xlApp1.Workbooks(fileNames(counter - 1)).Close(False)
I can't figure out what to do to release the `ComObject` for the new worksheet that is created. I have been trying all sorts of things, but it always throws a COM error when I do it and if I try to define it as nothing (like I do with exportsheet) is says that it is read only by default, so I can't do it. It seems like it should be something as simple as: System.Runtime.InteropServices.Marshal.ReleaseComObject(xlApp1.Workboo ks(fileNames(counter - 1))) But that is not the case. I have tried a few variants of this and I am thinking it has to do with the MSDN link above, but I can't quite sort out what to do. So the code works for my purposes, outside of leaving one EXCEL.EXE after it is done. As far as a test file, I am just using an Excel file with 3 sheets and I put some information on each and change the sheet name, so it is easy to see if it is working or not.
Using The Microsoft.Office.Interop.Excel.dll Library; Does Excel Need To Be On The End User's Machine
Nov 22, 2011I have been doing a lot of reading on this topic and most folks seem to agree that having Excel is required to use the COM Interop libraries. However they are never specific as to where that should be installed. Does it need to be installed on the machine I am developing on or does it need to be on every machine that I deploy to?
Edit: I should mention that this is desktop development/deployment targeted for all Windows machines.
.net - Exporting To Excel Removes Leading Zeros. Css Styles To The Table Does Not Carry Over To The Excel Export?
Aug 4, 2011I have an asp:table which I want to exported to excel. One of my fields are alpha numeric and when exported to excel the leading 0s are stripped off. After going through this thread: Validation (CSS 2.0): 'mso-number-format' is not a known CSS property name I would like to use the css method "mso-number-format:@;.But the css is not exported to excel. I just tried to test it with simpler css things like bold font etc but its not getting carried over. I can see that if I surround my asp:Label with tags this change gets carried over to the excel but not the css bold . Other solutions in other thread does not work for me as ="00111" shows up as desired in excel but in the web form it shows up as ="00111" which is not what i want.
View 2 RepliesOffice Automation :: Code Hangs When An Excel File Is Opened To A Excel Workbook Object?
Aug 3, 2009I use the following code snippet
Dim exlapp As New Microsoft.Office.Interop.Excel.Application
Dim xlWorkBook_new As Microsoft.Office.Interop.Excel.Workbook
Dim strOriginal As String
strOriginal = Server.MapPath(Request.ApplicationPath & "/Attachments/") & "abc.xls"
xlWorkBook_new = exlapp.Workbooks.Open(strOriginal)
The code hangs in the last line. It works fine in the development environment. i deployed in windows server 2000 ,where I get this issue. the browser goes half way and throws the below exception after some time
[Code]...
I have set the identity impersonate to true in web config. This should be mostly an access rights issue.I have even provided access rights for the "everyone " user in the excel file and as well for the interop component. Please post ur valuable comments.
VS 2008 Coloring Excel Sheet - Efficient Way In Order To Provide The Colored Excel Output?
Dec 19, 2011I have to provide an Excel file as an output. I have to color some of lines and make them bold.The input is based on a dynamic list (in memory) and it also could be based on CSV file that I'm already provide today (based on the same dynamic list).I'm wondering what would be the most efficient way (in terms of performance) in order to provide the colored Excel output?Should I export directly from dynamic list into Excel - or - Should I export from CSV into Excel ?
View 7 RepliesApp That Opens Excel Visible Then Another Button_click That Writes To The Same Open Excel
May 11, 2012I 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]....
C# - NPOI Excel Number Format Not Showing In Excel Sheet In Asp.net
Aug 6, 2010I am trying to create double and number format cells in excel using NPOI library. I used code like Dim cell As HSSFCell = row.CreateCell(j) cell.SetCellValue(Double.Parse(dr(col).ToString)) In excel numbers are aligning right but when I check format it is showing in "General" then I changed my code to like below
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Cannot Create ActiveX Component - EXCEL - Does Server Have To Have Excel Installed
Apr 1, 2009I have read some of the other posts on this and seem to be a little different than my situation. Trying to print out some reports into an excel document on the clients machine - of course it works fine on my local (heard that before right). I went in and set my references Ms.Office.Core and Ms.Office.Interop.Excel to 'Copy Local' = True so the .dll are in the servers bin folder.
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Display Excel File (even If Excel Is Not Installed) Library? Method?
Mar 5, 2012I have a project that has a need to display a Excel file in second window, but because other controls are needed, simply launching excel is not sufficient. Right now I do not know if the target machines have excel installed but I know with certainty that if they do it would be 2010, is there any method or library that allows you frame your own form around an excel window?
View 1 RepliesEliminate Duplicates In Excel Using Macros And Place It In Another Excel Sheet?
May 28, 2007How to Eliminate duplicates in excel using macros and place it in another excel sheet The duplicate record must also be transferred.
View 2 RepliesExcel AddIn - Keeping Windows Form Always Visible While Within Excel
Feb 29, 2012I'm trying to upgrade an Excel VBA workbook to a VSTO Excel Add-in in VB.NET using VS 2010. In the original (i.e.- VBA) version I have a modeless UserForm (called frmMain) that floats on top and is visible at all times while the user is still within the Excel application, but is not visible if the user moves to another window outside of Excel.
For example, within Excel the user can click on any worksheet tab, select any cell, etc. and the UserForm is still visible. This is exactly how I'd like it. The problem is, that in the new VSTO add-in, I can not get the Windows form to mimic this same behavior. I use frmMain.Show() to show the form as a modeless form, but the moment the user clicks an Excel worksheet (i.e.- activates a worksheet) the form becomes hidden behind the worksheet.
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Excel VBA Code Waits Indefinitely When Excel Window Is Not Active
Sep 7, 2010I have one excel sheet which has ontime event of 5 mins to run some code.This code works fine when in debugging mode. But if I lock my PC or minimize excel windows and start working something else, this code just pauses at beginning and as soon as I activate excel window, this code runs.this code involves opening and closing of one userform and i think userform is culprit.
View 2 RepliesExporting To Excel - Get Excel To Return Down A Row And Display The Next Product Within The List Box?
Apr 16, 2011I am building an ordering system for my job. The idea is that the customer will put in a stage name for an item. That stage name is then interpreted by the program.The product id and the amount the customer wants to order is placed in a list box on the form. There are a couple of buttons, ADD, REMOVE, CLEAR, and EXPORT. The user input is handled by input boxes. When the user pushes the EXPORT button, excel should open and list out the interpreted product codes with the corresponding amount to order. I can get excel to open, but I can not get excel to display more than one line. It will display the first product, but then it comes up with an unhandled exception.I can not figure out how to get excel to return down a row and display the next product within the list box.
View 6 RepliesOpen Excel File And Reusing Existing Excel Instance?
Jul 13, 2010I 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.
Progress Bar For VSTO Based Excel Template In Excel 2007?
Feb 1, 2010I would like have a progress bar like Outlook 2007. when you click on a link in a message. you can see a progress bar between the ribbon menu and reading pane in outlook 2007.
Is it possible to have the same progress in Excel 2007?
Read Excel Data (Excel 2007 SP1, On Windows XP SP3) With .net 2008?
Oct 7, 2009I am trying to read excel data (Excel 2007 SP1, on Windows XP SP3) with visual basic .net 2008 (VB 9.0 SP1). I have tried several attempts and whatever I do I am getting the following error message: System.Runtime.InteropServices.COMException was unhandled ErrorCode=-2147319784 Message="Altes Format oder ungültige Typbibliothek. (Exception from HRESULT: 0x80028018 (TYPE_E_INVDATAREAD))" Source="Microsoft.Office.Interop.Excel" Message="Altes Format oder ungültige Typbibliothek." Translated: Old format or unknown type libraryI have added the reference "Microsoft Excel 12.0 Object Library" to my project. I am assuming that I might have to add a different or an additional reference, but I do not have any clue which one to use. List of things I have already done:- Searched other forums- Altered the language settings- Tried it on an other Computer (Win XP SP3, Excel 2007, Visual Basic 2008 Express)- Ran the diagnostics tool in Excel - Updated all updates etc...- Reinstalled Visual BasicI really do not have any clue why it should not work?
Imports excel = Microsoft.Office.Interop.Excel
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim xlsApp As excel.Application
[code]....
Reading Excel Files In Vb.net Leaves Excel Process Hanging?
Oct 23, 2009The following code works fine but seems to leave instances of excel.exe running in the background. How do I go about closing out this sub properly?
Private Sub ReadExcel(ByVal childform As Fone_Builder_Delux.frmData, ByVal FileName As String)
' In progress
childform.sampleloaded = False
[code]....