Via VB.Net, is there any way to access the AutoSum feature that Excel has? I have a spreadsheet that I create and populate via a datatable using my application. I know how to sum based upon a predefined range (e.g., .cells(cnt + 1, 21).Formula = "=Sum(U3:U" & cnt & ")") but is there any way that I can just call a cell in my worksheet and have it AutoSum as if I was clicking the AutoSum button in Excel for that row? This would save me a lot of coding time based upon the logic my spreadsheet is going to need.
Dim objxlrange As Excel.Range objxlrange.Columns.AutoFit()
I am currently getting this error "object reference not set to an instance of an object" Using the keyword NEW does not work to fix this problem. Is there another way to AutoFit Cells in excel? I will continue to look for the answer and I will post it here if I find it.
What I basically need is a Auto Sum script in Visual Basic for Excel.(Dynamically)
Instead, of having to manually insert the auto sum formula() every time I insert a new number in a new column. I want the script to automatically recognize the numbers, and either subtract, add, multiply, or divide. To get the number to get the value of the column.
I tried something like this -
MyTotal = Application.Sum(Range("A1:A100")) ' returns the total of the values in A1:A100 in the active worksheet.
How do I use Excel Automation in VB.NET? Please remember to mark the replies as answers if they help and unmark them if they provide no help. Welcome to the All-In-One Code Framework!
In Excel 2010 (but also in older versions you can find a nice functionality - auto filter. When you just put some data in a row and press CTRL+SHIFT+L you activate Auto Filter. Now you press the down arrow and you get what I need... A new window appears. This window include buttons ordered in something like a context menu a textbox and a checkedlistbox. The windows definitely is not a classic form, because when you operate with the controls on it, the original excel windows is still the active window. The window can also be drawn outside of the main excel windows.
Is it possible to read an excel range when option strict is on?my test code works with Option Strict Off but 'Disallows implicit conversions from Object to 2 dimensional array of object' when Option strict is on!Is it possible to load a typed array from the object without looping round all of the elements? [code]
I have AutoFilter in place in my sheet. I want to sort data using the AutoFilter itself and not by normal sort. I want the client to see the down arrow on the autofilter button, which tells that rows are sorted on this key.
I have 'sheet' as an object :
sheet.Range("A2").AutoFilter then Or something else ??(Ensure the syntax for VB.Net and not VB Script)
I want to create a program that will auto update another program i have created. I want (this program) to check for updates (from a txt file that i wil have in the first line the previous version and in the second line the present version) and if there will be a new version then start downloading and the progress bar will show the progress. How can i do this?
I'm writing VB code in Visual Basic 2008 Express and can't seem to figure out how to create a new instance of Excel with VB code. The most common answer appears to be setting an object variable to 'Excel.Application', but that gives an error (Type 'Excel.Application' is not defined).
This seems like is should be simple but for the life of me I can't seem to get it. I am using VB.net.I am importing a text file into Excel. Then I want to select everything and sort it based on a cell (A) in this case. So here is what I have so far.
I'm using VB.net 2005 to input data from a database application into Excel files.I un-protect the sheets, input data into specific cells using named ranges, then re-protect the sheets.
This has worked fine so far, up until I ran into a file that is protected with auto-filtering enabled. When I re-protect the sheets, I can't seem to protect it while allowing the use of autofilter dropdowns. The dropdown arrows for the autofilter are greyed out and disabled.
Using the following code to re-protect the sheets after inputting the data.
[Code]...
works fine. The sheet is protected and I can use the autofilter drop downs. But when I use that same code in my VB.net project, the drop downs are not enabled.
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.
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.
So, I am already able to successfully import an excel file to sql server through my vb application BUT I want to automatically change a value in a certain column to another. To expand on this, my excel file has a column that lists test titles such as "WCOB 1120 Access Test". I want to have each specific test title changed to a number. So, "WCOB 1120 Access Test" would need to be changed to '1' before it is added into my database.
Public Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click Dim myPath As String = sFilePath & sFileName Dim ExcelConnection As New System.Data.OleDb.OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Data Source='" [code].....
I'm using ODBC to export tables from a dataset to an Excel file without auto-formatting Excel or even needing to have Excel installed on the users PC. This works great but I just had a request to autosize the columns and make the header line bold. The only way I know of doing this is to fully automate Excel to control the row/column/cell formatting. Does anyone know a way of doing this without auto-formatting Excel?
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 another Stack Overflow post 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 (check the update for one more issue that came up, but I think they are related).
Final Update: On the off chance that some poor soul ran into the same issue I was running into, the first update should solve it, but it is also important to note that the excel.exe will hang until you close the application. I am report automation code as a windows form application (so coworkers can give the file location and such) and there is going to be an excel.exe process running until you close the pop up window from the program. Maybe garbage collect does not run until you close the application window or it just hangs on to an instance of excel.exe for some other reason.
how to auto hide programs when windows start up n put its icon in the hidden icon box? i know the codes to make it hide, but not auto hide. im using a check box. when i tick it, i hope it wont prompt when i enter windows environment. iv already make it auto run. now i wish to do it auto hide, and an icon will show up in the hidden icon box
How to auto increment the date value in vb.net?[code]...
When i click the add Button, from Date should display in the textbox, then again i click the add button the next date should display in the textbox. The date should increment upto To Date.[code]...
I'm trying to make an Auto Login program, which requires me to do a few clicks. I've tried many of the methods found here on MSDN, but they don't seem to work. The code I'm using to simulate the left click is:
When I use this code, it always comes up with the following error:
"A call to PInvoke function 'DyKnow Login!DyKnow_Login.Form1::mouse_event' has unbalanced the stack. This is likely because the managed PInvoke signature does not match the unmanaged target signature. Check that the calling convention and parameters of the PInvoke signature match the target unmanaged signature."
I used the search, Could not find something on auto starting the program from download, or auto run, I'm not sure what it is exactly called, that might be why I didn't find anything.
made a program on visual basic and i want it to update, is it possible to on startup check its current version with some text on my website? and if the website numbers are higher it updates a file from the site? if i can how do i do this, and seeing as ive done the foolosh thing of making the whole project as once big exe not dll's can i get the updater to download the new exe if there is one and replce the old one with it
I'm trying to create an interface that automatically implements a fully typed out method in VB.Net
However, I can't figure out how to do it.
I wanna do something that's similar to what happens when you implement IDisposable, where it gives you the full function, including codes and comments.
I know how to make a code snippet and how to use the tab shortcut, but how can I make the code snippet automatically appear when I implement my own interface?
I try to create an auto start up program with a check box in VB.Net 2008.How do I create a check box that when I check the check box and press apply button, the check box will always checked next time I run the program and vice versa? [code]
im trying to make a auto mysql backup for my vb program. this code is working but i want to hide the console window so the user will never notice that something happened.
