I 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..."
I 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.
I'm using Microsoft.Office.Interop.Excel in VB.Net in order to export an .xls file as a .pdf file. This was the only method I could find without relying on third party software to be installed on the running machine or using an expensive add-on to Visual Studio. This method requires opening excel and saving a file through the code.
My problem is that I only have a trial version of Microsoft office as I never actually use it. Well the limitation of times I can open it is up as I have run the program enough times for debugging purposes and now I can't continue development on this application. Is there a development kit for visual studio that provides the API I need for this functionality without actually having Office installed? I don't need Microsoft Office so I don't want to have to buy a full version just to develop and test an application.
I've looked at some options like this, but there is very specific formatting that needs to remain intact in the .xls for the conversion to .pdf that doesn't seem to work if I use an intermediary format. I've also read a little bit about the openOffice API, but is that compatible with .Net? If so, can someone point me to a tutorial that explains how to use the API with .Net? Specifically VB if possible, but I can work with C# code.
Anyone have code to set margins(top,left,right,bottom) using excel interop and vb.net. I think it must be part of the worksheet object but maybe the workbook object. Having a tough time finding an example.
I am using Interop to read and write to excel but I'm having some problems writing to excel... When I enter the information I need to be written on the excel in an inputbox, this pops up "COM object that has been separated from its underlying RCW cannot be used."Heres the Code:
Code: Private Sub editmodelbtn_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles editmodelbtn.Click
I'm kinda new to using VB.NET and certainly with the Excel Interop.I have the impression that I'm doing something wrong in these simple procedures. I keep getting errors on them:
The first procedure fills a combobox with all the worksheet names of the workbook.The second procedure copies all cells in the selected worksheet to an array.The error is the following: System.NullReferenceException: Object reference not set to an instance of an object.I think the error is in the cleanup part, when I set the objects to nothing and close everything. Can someone confirm if this is good or wrong code and maybe point me in the right direction?
I Programe a COM Library in VS2008 to use in Excel , but I'm stuck with an error that I don't understand.
I use this two classes , that compile and register OK. One Class QBitems return a nongeneric collection of QBItem but when I tried to use the Add and/or Remove Method, I receive the following error in Excel VBA :
Run-time Error '438': Object doesn't support this property or method.
I added a class (SImpleClass) in the library and I called from VBA it returned the QItems collection without problem.
NEW: When I replace the QBItem object with a string in the Collection QBItems everytthing works OK. It looks like interface doesn't like to pass an object like QBitem class
Excel/VBA: Sub Pru() Dim obj As New CollectionCOMClass.SimpleClass Dim Itms As New CollectionCOMClass.QBItems
I am creating a report in my asp.net application. The report outputs to excel using the excel interop. Some calculations in the report cause excel to display "Inf" or "NaN" I want to force these calculations to zero so that the report displays zero and NOT "Inf" or "NaN"
I've developed a vb.net app which works great on my dev machine, both within the IDE and as a compiled executable. But when I deploy it to a user workstation, I receive the following:
Unhandled exception has occurred in your application. If you click Continue, the application will ignore this error and attempt to continue. If you click Quit, the application will close immediately.
Could not load file or assembly Microsoft Office Interop.Excel, Version=220.127.116.11,Culture=neutral, PublicKeyToken=71e9bce111e9429c' or one of its dependencies. The system cannon find the file specified.
I am having issues using interop with office excel in .net. I have tried a lot of things to close the excel application, workbook and worksheets i create to use in my program but i always notice the excel.exe still in memory. I have even tried forcing the garbage collector,
I am developing a fairly comprehensive Excel add-in, applying a lot of ops. Take a workbook, save under new name, apply actions (add names, change formulae, etc). Generally it works fine, but from time to time .Net throws an InvalidCastException on virtually any of my CTypes. When I acknowledge the error and run the code again (without quitting Excel) on the exact same Excel workbook, no error occurs. The InvalidCastException occurs maybe in 40% of all tries, otherwise the add-in succeeds.
I get this exception message when I run my web site in my development pc. I've found many links that say that what I have to do is to register the dll, modify the COM properties and other when I pass my project to the server.Now, the curious thing: in the same computer I created a user control that create an excel document and It works fine, but, I took the control and I put it inside the other Web Site project with all the same references and it throws me this exception. I did not change
have a Visual Basic 2008 project with references to Microsoft.Office.Interop.Excel and Microsoft.Office.Interop.Access for Office 12/Office 2007. I also have Office 2007 installed on my PC. I tried running my program on a PC which has Office 2003installed (i installed the compatibility pack to open .xlsx files) and the Access Database Engine for .accdb Databases.It does not have VS2008 installed but has .Net Framework 3.5 SP1 installed.
I am working on a class that generates a report in Excel (any version).I need to perform a bit of ad-hoc labelling on a chart, for which I have created a textbox (i.e. Excel drawing object).I've managed to get as far as creating the textbox and setting it's text using Shape.TextFrame.Characters.Text. Ideally, I'd like to set the font characteristics as well, but I can't see how to do this. I can't seem to find much info about this anywhere, so hopefully someone's dealt with this before and can give me a few pointers.
We're exporting a set of data using .net interop to Excel and our template file contains some images. Depending on the amount of columns we're exporting we want to position the image X pixels left of the last column depending on the image size/width. Using the record a macro function moving the Image around is a 'no op'. Setting the Shape.Left position also won't work.
I'm wondering if you can use the Microsoft.Office.Interop.Excel in a windows service application type.
I've a windows form application which opens an Excel file and do some actions and save it as another file. All this is working perfect in windows forms. When I copy the same code and paste it in a windows service, then it is not possible to open the file even.
I use:Imports Microsoft.Office.Interop as well as a Reference from the "COM" tab called "Microsoft Excel 11.0 Object Library"
I built my program then copied the .exe from the inDebug folder to a location on my company's server. I then double clicked the .exe and it ran as I expected it would.My boss then tried (from another computer) and he gets this error:See the end of this message for details on invoking just-in-time (JIT) debugging instead of this dialog box.
My application crashes when trying to save a word document as text. The error at SaveAs is "Type mismatch. (Exception from HRESULT: 0x80020005 (DISP_E_TYPEMISMATCH))" I am opening and manipulating a Word 2003 Document (using Word 2007) and then trying to save it as a text file.
I have a VB.net 2005 app using the Microsoft.Office.Interop.Excel.dll version 11, deployed on a number of XP machines with Office 2003 installed. On one and only one machine I get the following error:Error -2147467261 Attempted to read or write protected memory. This is often an indication that other memory is corrupt.The line which triggers the error is:
xlSheet.SaveAs(strPathXLS) xlSheet has been previously defined by Dim xlSheet As Microsoft.Office.Interop.Excel.Worksheet
This should save an Excel file in a folder on the desktop. I can save a file from Excel in that folder, and create a new Excel file in it from the right-click option. The app is working correctly on the development machine and at least 8 other XP boxes on site.All Office and dotNet 2 updates have been applied.Office and dotNet have been uninstalled and reinstalled to no effect.
I am writing long text (1K to 2K characters long, plain xml data) into a cell in excel workbook. The below statement throws COM error Exception from HRESULT: 0x800A03EC
range.set_Value(Type.Missing, data);If I copy paste the same xml manually into excel it just works fine ,but the same does not work progamatically.If I strip the text to something like 100/300 chars it works fine.
Assume all traces of Office 2003 will be removed from the computer.I understand that I will still be able to use .xls files. I'm asking about automating Excel through the COM interop from outside Excel. When I add a reference to Excel to a VB project, it gives me a different version of the dll for different versions of Excel. If a program was compiled with a reference to Office 2003's dll, will it need to be recompiled for Office 2007? Will the code need to be updated to use the new dll?
I am trying to select a list of sworksheets to save as a PDF. The recoreded Macro gave me the code below, but after modifying it for VB.Net, the word array is flagged saying it is a type and cannot be used as an expression. Is there Excel object or namespace I can use? I can't find anything in the help searches. It says to use Sheets(array to get more than 1 sheet.
I am using the Microsoft.Office.Interop.Excel library in VB.Net on an excel sheet that is protected. All of the protected settings are working fine except that I cannot set Select Locked Cells which shows when you are using the Excel protect sheet interface but I cannot see how to set this to false using the library. I have tried all of the different values in the protect method but none of them toggle the value.Excel protected sheet menu Below is the code snippet I am using to get my workSheet, populate some values, and then protect the sheet. GetWorkSheet is an internal method which will return a WorkSheet object, and invoiceData is a datatable which has the data which is being added to the spreadsheet.
Dim newSheet As Worksheet = getWorkSheet(newSheetName) ' Make the current Work Sheet active so that it will be accepting the data. newSheet.Activate() newSheet.Unprotect(sheetPassword)