.NET 2.0 And Excel - Defined Automation Is Either Not Loaded Or Not Working After Loading?
Dec 7, 2010
We are using .NET2.0 and Office 2003 to develop a desktop application. We met the following problem which may fail the project.We developed some functions in our .NET application and exposed to Excel as an external automation. Then we developed reports template in Excel with these custom functions to generate our report data defined in Excel cells. However, when we tried to refresh the report via .NET to call Excel in background mode, we met the problem that the defined automation is either not loaded or not working after loading. It is extremely volatile. Then we could not refresh the data as desired to display it in .NET forms.
View 3 Replies
ADVERTISEMENT
May 28, 2009
I am developing an application using excel automation.The worst thing is the client's side doesn't have excel installed.What is the solution for this case?
View 17 Replies
Jan 25, 2011
I have written an automation addin in Excel with C# (addin.dll). To use the addin, I need to 1. register it using "regasm /codebase c:...addin.dll"2. select in ExcelOptionsAddInsExcel AddinsAutomation the respective addin from the list
I would like to automatize 1) and 2), so that the user just needs to run an exe-file in order to use the addin. 1) should be no problem, but how can one automatize 2)?
View 12 Replies
Apr 20, 2010
Ok basically what I need to do is the following:Read FirstExcelDoc (attached)For every row in that: Retrieve data from sql server db based on info in the Orange columns of FirstExcelDoc Let's say I retrieved data elements A, B, C, D, and E from sql server. Then I need to enter those same data elements A, B, and C in another excel spreadsheet (which has formulas etc) After inputing A, B, and C in that spreadsheet, read a couple of calculated fields and compare those results to data elements D and E retrieved originally from SQL Server DB. Finally, output the results in the Blue columns of the FirstExcelDoc spreadsheet for that row.Loop through and do the same thing for row 2 of the FirstExcelDoc and keep on until you see "END TEST" in the FirstExcelDoc.
I'm looking for a method of doing this efficiently. I have read several articles over the past few days as well as those from Mike R. but just need some direction to get started on this.To start of I'm looking for whether to read the entire FirstExcelDoc spreadsheet or just read the info for first policy number(2nd row) and process it and write out the blue column info for that row and then loop through and come back and read the second policy number (3rd row) etc... Please attach a code snippet for either way of reading the data.
View 19 Replies
Jun 17, 2009
I'm using excel via interop in application.Sometimes users kill application that created excel instance and that results in excel instance sitting in memory without any chance of disposing it.First I tried to tackle this using ROT(running object table) looks like not all instances of excel are registered there.Than I tried to somehow mark excel process after it is started via interop.[code]This works as long as excel is visible but in my case excel window is invisible.All I need is to somehow mark process that started via automation with the parent PID, so that later I can kill it if parent does not exist.
View 19 Replies
Dec 17, 2010
I have been pulling my hair out trying to fix this.
[Code]....
View 1 Replies
Jun 1, 2010
We have a vb program which is run on our server by scheduled task every day. The program opens about 30 excel files, refreshes the data connections, pivot tables and then saves the document in another location.
This may run fine for a couple days but sooner or later the process starts crashing, usually with this error: RPC_E_SERVERFAULT.
My question is, Is it expected that continually opening/closing/refreshing workbooks will inevitably cause the Excel object to crash at some point.
View 3 Replies
Sep 25, 2009
I'm having an issue where my excel.exe process doesn't close until I close my .net application. I'd like to avoid using Process.Kill() if at all possible.
Code:
Private Sub WriteRowsToXls(ByVal rows As DataRowCollection, ByVal xlsPath As String, ByVal showStatus As Boolean, Optional ByVal AddTotals As Boolean = True)
Dim xlsApp As New Microsoft.Office.Interop.Excel.Application
[CODE]............
This method references a couple of other methods I use for repeated formatting tasks, I'll include those methods below. (I added the FinalReleaseComObject into the other methods after reading Mike's thread but the issue persists)
Code:
Private Sub SetRangeValidation(ByVal rng As Range)
With rng.Validation
.Delete()
[CODE]..............
Method SetRangeAllBorders does about the same as these other methods but my post is too long to add it. The only other things not shown in these code snippets are a few string variable that are defined in the class, studentWS, studentsWSPW, paymentsWS and paymentsWSPW My App creates an instance of the class, loads some data, runs the method above, and then sets the class to nothing. I'm using .NET 3.5 automating Excel 10
View 2 Replies
May 8, 2010
i am trying to read an existing excel 2007 file from vb.net i used a form with single button and i written code in button click event code is :[code...]
View 1 Replies
Feb 2, 2010
I have a form that contains two datagridview. I need to load the form first or anything that shows a "loading please wait.." form while the two grids load.Basing on your experience what are the ways to do this?
View 1 Replies
Apr 5, 2011
With vb.net I would like to select 4 cells in Excel and then pass those cell values along with 1 button tag to a formula in Excel.I press a button with a month, say "May" as text. I want to grab a cell in Excel labeled "May1t" the value of which is the number of hours until may. This is the code I'm using.
xlsWB.Worksheets(2).Range(Month1 & "1t").Value I am able to set a variable with this as the value but,
I want to pass this cell (which will be updating as the time counts down) and 3 other similarly specified cells along with the button tag to an Excel formula.I have something like this:
Private Sub F_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles F.Click
xlsWB.Worksheets(4).Range("B2").Formula = "=MyFunction()"
xlsWB.Worksheets(1).Range(Month1 & "1t").Select()
End Sub
The formula takes the parameters in the order: MyFunction(Cell,Tag,Cell,Cell,Cell).
View 1 Replies
Oct 6, 2009
I'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'.
View 6 Replies
Feb 24, 2012
I 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.
View 1 Replies
Aug 3, 2009
I 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.
View 3 Replies
Feb 10, 2010
I have a .NET DLL that writes to the Trace. But it seems that when I call my DLL from a VB6 EXE the trace is not working. I have created an myApp.config file in the EXE folder with the trace configuration, but this does not solve the issue. I've also tried creating the Trace objects in code, but doesn't work:
[Code]...
View 2 Replies
Jun 15, 2011
We have a VB 2005 program that reads data from a database and builds an Excel output file to be emailed. This works fine from my computer but when we put it on the server it fails on the Excel functionality.
The error is: Unhandled Exception: System.Runtim.InteropServices.COMException
Although Excel is not installed on the server we did also build a Setup program to install our program. It copies the Microsoft.Office.Interop.Excell.dll to the server folder with the exe.I thought the setup program should register the Excel DLL and the program should work even if the server does not have Office or Excel installed.
View 3 Replies
Aug 10, 2010
I am creating a data analysis program (using Visual Studio 2010) having several functions. One of the functions is to create graphs (scatter plots) of my data. Now occasionally, I may collect a data point that appears good when I take it, but when I plot it on my graph, I find that it's bad data and needs to be deleted.
My problem is that I would like to have a button called, say, "Delete Points". I hit that button and then choose the point directly from the scatter plot. The data source for the plot is then updated removing the offending point. I would then also have a button called "Restore Points" to bring back deleted points.
I have been thinking of doing this in Excel, but only because I don't have much experience with any other plotting program. Using the Excel approach will have its shortcomings, like needing to push the "Delete Points" button on a GUI separate from the Excel window (and thus needing to activate the Excel window).
View 3 Replies
Feb 14, 2009
It appears that when one creates an instance of Excel, using CreateObject, (Late binding), the suggested Excel closing function (with GC.collect etc) does not work. I have tried several suggestions, and the only one that works is process.kill method. Do you see any problem in using this? BTW: the reason we are using late binding is that we cannot use Office PIAs....not sure which version of Office would be installed on the client site. We work with O2003, but the client might still be at 2000 or 2002.
View 7 Replies
May 28, 2012
How to save image from webbrowser loaded page to hdd (after loading save to hdd)?
View 2 Replies
Mar 23, 2010
Im currently looking fora solution to load/delete/write to a csv file. I tried to save my .txt into .csv but when its loaded into excel it writes everything in column
A1: John Freeman,Apartment 1 Street 2,New York with commas...
I want to put it in column A1: John Freeman B1: Apartment 1 Street 2 C1: New York
What am I missing? This cvs seems like the thing i want to work with.I testet it with writing my user registration form to .csv and its writing it perfectly into excel when i use & vbCrLf & between the text inputs, but will be listing them vertical and not horizontal as i want them to be.Also i don't know how to clear my csv document now and how to call the csv file to a table or a textbox like i did with my .txt file.
[code]...
readalltext can't read .csv so the code should be like?
View 8 Replies
Jun 11, 2011
1. I get a list of excel files from a dir into a list box and search for number by select each files at once. I want to select multiple files at once and search them one by one.May be using checklistbox.
2. The output is shown in a new window (labels) with result from that particular file. If multiple files are selected that the output should show result from all files in different labels.
3. Excel program stays open in memory after closing my application.
4. Also I cant get the app to display message "maskedtextbox1.text" not found in the sheet.[code]
View 1 Replies
Dec 25, 2010
I get a list of excel files from a dir into a list box and search for a string/number by selecting each files at once. I want to select multiple files at once and search them one by one.May be using checklistbox.
2. The output is shown in a new window (in labels) with result from that particular file. If multiple files are selected than the output should show result from all files in different labels.
3. Excel program stays open in memory after closing my application.
4. Also I cant get the app to display message "maskedtextbox1.text" not found in the sheet. If I do after line 30 Else messagebox.show "String not found", it goes into loop or displays the message even if the string exists in the excel file.
[Code]...
View 4 Replies
Apr 15, 2009
I'm working on a vb.net console app that opens a number of spreadsheets one by one, reads in a couple cells and closes the file. Some of the spreadsheets have formulas that Excel recalculates when I open the file, and I'm getting a dialog box asking me if I want to save changes to the spreadsheet when I close it. Message: "Do you want to save the changes to myfile.xls? Microsoft Office Excel recalculates formulas when opening files last saved by an earlier version of Excel".
How do I automatically decline that dialog box?
Dim newCBD As New CBD
Dim xlApp As Excel.Application
Dim xlWorkBook As Excel.Workbook
Dim xlWorkSheet As Excel.Worksheet
[Code] .....
View 2 Replies
Nov 13, 2009
I am exporting data to an Excel spreadsheet from a VB.Net 2008 application. Now I'm trying to format the spreadsheet. So I am creating macros in Excel that format the spreadsheet, and then using the code it generates in my application. The problem is that the constants used in VBA are not being recognized in VB.Net (They are recognized in VB6). I have the following imports:
Imports Microsoft.Office.Interop
Imports Microsoft.Office.Interop.Excel
Is there something else I should be importing? For example, in this line, xlNone and xlDiagonalDown are flagged as not declared.
oXL.Selection.Borders(xlDiagonalDown).LineStyle = xlNone
View 5 Replies
Dec 20, 2011
I'm in the process of adapting a current program that I've created to automate it. **Current State***User selects an excel file and the contents are loaded into a DataGrid User can select which environment to run their query against (stage/prod) Program completes processing and updates datagrid with new values User can export datagrid to excel What I'd like to do is centralize the program on one computer and have it monitor a network folder for creation of a specific file type (*.xls or *.xlsx). If one of these is created in that folder then I want to add that file to a queue for processing. Once done processing I want to send the results as an attachment to an email to the user that created the file. After a file is processed I would like to remove it from that folder as well (into a diff folder of completed items).
[Code]...
View 8 Replies
Sep 9, 2011
I know that there are millions of posts about this already but I cant seem to find one that mirrors my issue. I am using VS2010 and want to automate excel and I'm trying to work through the example here.
MS Tutorial The problem is when I go to add the reference as mentioned 3.Add a reference to the Microsoft Excel Object Library. To do this, follow these steps: -On the Project menu, click Add Reference. -On the COM tab, locate Microsoft Excel Object Library, and click Select.There is no such reference available.
know if this is the right way to automate excel with VS2010.If it is could someone please let me know why I dont have the COM option for excel. im wanting to write in VB.net but if someone has an example in C# that would be fine. I have tried implementing automation using the Microsoft.Office.Interop.Excel.Application dll but i get the following exception when I try to create the excel application.
This line generates the error. EXL = New Microsoft.Office.Interop.Excel.Application()This is the exception
Retrieving the COM class factory for component with CLSID {00024500-0000-0000-C000-000000000046} failed due to the following error: 80040154 Class not registered (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG))
View 1 Replies
Aug 7, 2009
when the worksheet is built i get the error message "Object reference not set to an instance of an object.".Here is my code:
Code:
Dim myXLApp As Excel.Application
Dim myXLWbs As Excel.Workbook
Dim myXLSht As Excel.Worksheet
[code]....
View 1 Replies
Jan 29, 2010
I am trying to automate excel. And creating excel object as oExcel = CreateObject("Excel.Application") And trying to close/kill(Kill ) the Excel in Process window using
For Each P as Process In Process.GetProcessByName("Excel")
if p.MainWindowHandle.ToInt32 == oExcel )
p.kill
end if
Next
But the P.MainWindowHandle.ToInt32 is always 0
I have tried this one , Which works for simple methods and not for complex methods
View 17 Replies
Apr 24, 2011
I'm very new to VB.Net and just trying to find my feet a bit and get my first programs running.url...Which should allow me to run excel from VB.Net, but I get heaps of errors - basically anything specific to Excel comes up with 'type not defined' or 'name not declared'. I've tried adding the reference several times and I'm pretty sure I've followed the tutorial to the letter so I'm stuck.Don't want to post the whole code because it's very long, but here's the beginning and end:[code]
View 1 Replies
Sep 21, 2011
I am having an issues with getting my page setup right. the code below makes excel go crazy and adjusts it to 10% of its normal size and basically every cell is a pagebreak. [Code] If i comment out the MARGIN changes it works fine and adjusts to about 58% of normal size, but i need to change the margin sizes or else it prints out a bit too small. any ideas?
View 1 Replies
