Acess Excel From Program?
Jul 29, 2011
I have just bought a new PC which runs MS Office 2010 under Windows 7 and I purchased Visual Studio 2010 Professional. I have a program which was running successfully on an earlier version of Visual Studio running under Windows XP. I have been able to replace the 32 bit Custom Control and the program, which was compiled on the old PC, is running successfully on the new PC.
However, a part of the program transfers data to an Excel spread sheet and this does not work.Opening the project in Visual Studio I have found the error. There were some problems with XL Application and XL Constants, but I think I have worked around these.[code]...
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Mar 31, 2011
I already registered a custom dll in gac,but i want top acess the .dll in vb.net code without help of add reference.in my dll one function is there for that reson i want to acess the function.[code]...
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Jul 23, 2009
I have a small program on the menu written in VB6 retrieve data from Acess run very fast and now want to switch to VBNet2008. VBNet2008 conversion is still normal, but when running the menu does not appear that waiting in line, then click on the menu bar of this menu appears, but not the font is in Unicode data is available. Expect you to help debug programs that run on VBNet2008 still running good access Menu fast as running on VB6. Also supported is Unicode font on VBNet2008 does not function for unicode font. Attach program with VB6 and VB2008.
[Code]...
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Jun 11, 2011
I want to make simple quiz (100 questions), structure: 1 lbl = question, 3 radio buttons (answers) and 1 button(next question).I added access database to DataSource, binded data to lbl and radio buttons, it automaticaly added the code:[code]The form is loaded ok with the data I need but I can't write the code for the button "next" to load next row from database!The question is: HOW TO LOAD NEXT ROW FROM ACCESS?
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Nov 4, 2010
frmAddUser is a simple form that is opened as a dialog by a command button on the primary form (frmPrimary). Once opened, it's only job is to collect information via textbox and combobox fields. Once submitted, the information is added to the database.
This works, or so I thought. If I open this form, fill it out, and submit the information; the record is created. However, if I turn around and do it all again with different information, another record is created but with the previous information (not the new). It will continue to make records as long as I keep submitted this form but no matter what information I put in, it always uses the original information that was used to create the first record.[code]...
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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.
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Jun 10, 2009
How to access data from Ms-Acess and oracle?
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Apr 5, 2012
i was wondering is there a build in class in vb.net for get a range of dates from a column:What i mean is say i had the following dates in a column
10/03/2012
11/01/2011
14/05/2011
[code].....
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Mar 4, 2011
im working on a school project where i shall show/explain how a remote acess program work and i coded the most but when want to send all listbox items from server to the client and in the client is another listbox where it should be transfered over..[code]
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Jan 29, 2010
i've been trying to figure out how to update a row in my database, using a set of fields from the current form. The code which i have made so far is shown below, however it always comes up with an error message:
Private Sub btnupdate_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnupdate.Click
Dim SQL As String
Dim updatelogin As New OleDbCommand
Try
[Code]...
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Jul 12, 2010
I have built a search criteria for a table in my database. I have 3 textboxes first says anstnr second says firstname and the third lastname.The problem is that i cannot search if first field "anstnr" is blank. If i only will search on firstname thats not working.
Private Sub FillByolikaToolStripButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles FillByolikaToolStripButton.Click
Try
[code].....
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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 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).
Here is my code:
Imports System.Data
Imports System.IO
Imports Microsoft.Office.Interop
Imports Office = Microsoft.Office.Core
[Code]......
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.
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Jan 22, 2010
now i am doing final year project in vb.net and ms.access.but how i will connect vb.net with ms.acess data base table.
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Jul 2, 2009
I want to search record in the database and if the record all ready in the database something do. I use this code but it is not work
Str SQL = "SELECT* FROM student WHERE stdno = '"& txtstdno.Text &"'"
oledbcon.open()
ry
[code].....
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May 13, 2010
thr are 02 fields username,pasword in database also two textboxes in vb.net form for username and pasword ... i need coding of if else which confirms that, if (username,pasword ) = username,pasword of atabase then
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Jun 11, 2011
How we can show data from acess database in datagrid
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Oct 18, 2009
I've already finished the program and the last task was to add a password for my MS Access database. I've created the password in Ms Access and I've already modified the connection and saved the password but when I run the program all codes like this
Me.Table1TableAdapter.Fill(Me.Database1DataSet.Table1)got an error message says Not a valid password.
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Aug 12, 2009
Trying to set a Combo Box RowSource to a field in a table that contains the choices separated by semi colons. Have tried both a query and a DLookup but it results in displaying the full contents of the table field, e.g. "10;12;14;16" rather than giving me the usual selection list
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Apr 27, 2010
Having problem in updating an existing record. An error occurs "Data Type Mismatch in Criteria Expression"
Private Sub ToolStripButton1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ToolStripButton1.Click
Dim myBuilder As OleDb.OleDbCommandBuilder = New OleDb.OleDbCommandBuilder(dataAdapter)
[code].....
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Aug 31, 2010
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.
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Jun 5, 2011
Does anyone know on how to convert vb.net to excel. I am new in this company and they are using Microsoft SQL Server Management Studio for their database.
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Jun 8, 2010
I 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
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Jan 7, 2006
When I try to make a new workbook from excel it doesn't work and returning the following error[code]...
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Mar 24, 2011
I have been trying to create a excel sheet as an output of my .exe but canīt doit.[code]...
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Jun 21, 2009
I have Excel 2003 and 2007 loaded on my computer. When I open an Excel file, it is defaulting to 2003. How do I check to see what the default program is for opening xls files and change this to 2007 in my code? I have already done the following manually:
1-Open My Computer
2-Go to Tools --Folder options
3-Click the File Types tab
4-Scroll down to the XLS file type and highlight it
[code]....
However I am not convince that its defaulting to Excel 2007 when I run projects in VB as I am seeing the "File Conversion" prompt when file are open.
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Apr 28, 2011
I'm using the excel object model (importing namespace Microsoft.Office.Interop.Excel) to open an Excel.Application object in my code, then open a workbook, worksheet, etc. What I'm doing is ridiculously simple: I'm opening two worksheet objects; one is already populated with data and another one is empty and is supposed to be populated with some rows from the first worksheet. If some conditions, regarding cells in the first worksheet, are not met, then I want to copy the entire row in the second worksheet, at the first available row. I have an integer counter, initialized at 1, which indexes the first empty row in the output worksheet this counter is obviously incremented every time I insert a row at outputSheet.Rows(counter).
Every solution I've Googled either uses VBA (I'm looking for a solution based on VB.NET) or is not compatible with .NET framework 3.5 (I'm receiving exceptions at runtime). I'm guessing I'm not using the Range object correctly or something; in any case, what's the simplest way to do this? I really don't want to open an OLEDB connection to my excel file: this is too complicated for the simple row copying mechanism I'm trying to implement.[code]...
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May 27, 2010
I have a server that exports a file to our server every wed and sat. The file is a .csv file, so I created a batch file to move that to a folder and rename it to .xls. My problem is that there are things on that excel file that that the dealership doesn't want, like a cost column and some other blank ones i need to delete. So I want to write a program that will read that file into the program, delete the columns, and then write it back to file. So when they go into the excel file those columns won't be there. So i have to do this to 3 different ones because there are 3 different dealerships. So far this is what I have. I would like to create this on a Console App, because I want to be able to just run this from the dos prompt, or I think I'm just going to have a schedule run it for me at a specific time on wed and sat. But this was created in the Forms App
This is what i have:
Imports System.Object
Imports Microsoft.Office.Interop
[code].....
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Aug 14, 2010
My program was working fine. I have ther Excel program File.xls up on the desktop. I have Excel Object 12.0 in Add References checked. I just do not know what is wrong. Here is a code excerpt:
Dim xlApp As Microsoft.Office.Interop.Excel.ApplicationDim xlBook As Microsoft.Office.Interop.Excel.Workbook
Dim xlSheet As Microsoft.Office.Interop.Excel.Worksheet
xlApp = GetObject(, "Excel.Application")
xlBook = xlApp.Workbooks("File.xls")
xlSheet = xlBook.Worksheets(1)
[Code]...
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Sep 4, 2011
I want to get data from excel sheet using visual basic.
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Jun 18, 2011
I am trying to make a program that goes to an excel file, copies the given range and pastes (Values!!) to another excel file. I am doing it in a loop because information from 12 different files gotta be in this one workbook. this is what i got so far
For intCounter As Integer = 0 To 11
With appXL
.Visible = False
[Code]....
It does the job, but every time I close the Roll Up file it gives me an error "A formula in this worksheet contains one or more invalid references." I guess it is because it copies the formulas as well...
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