I'm developing a new program to add rows to a spreadsheet using VB.NET on a Windows 7 64 bit computer with Office 2010 installed. I have done this many times in the past with slightly different setups with no problems. This program locks on: xlWorkBook = xlApp.Workbooks.Open(FullFileName)After several minutes HRESULT=0x80131c08.ErrorCode=0x0 appears
I have to idea why it locks. The XLS does exist in the folder.
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What do you think is wrong with the commented line in my vb.net code below? it returns the error message "member not found".[code]...
View 1 RepliesI use VB 2008 express edition and i have this problem.I want to make a program that password locks any folder you want.(Using Icacls from command promt).My problem is that when i run the program
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Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
If My.Computer.FileSystem.DirectoryExists(TextBox1.Text) Then
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All this is done becouse i can't save the listbox contents in My.Mysettins.If anyone would be able to show me how to do it i would be helpfull.But please don't give me 50 lines of ununderstandable content.I want something that i will be able to understand becouse there no reason if i use it without knowing what it does.
I am making a program to test whether or not a host is online, assuming that host has blocked methods such as ping and netstat -t etc....
So I decided to try and connect to it, but the thing is every limitation I have set doesn't work. The program locks up for a few seconds (which I don't want in the first place) and I cannot terminate the client after say, 100ms of trying to connect.
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I have tried client.ReceiveTimeout but that didn't speed up the process, still takes the same amount of time for the program to respond.How should I go about testing if the server is up now? Or is there a way where the program wont lock for a few seconds as it does with the TCP method.
I'm using Visual Studio 2008 and developing a VB.NET application. I'm having strange lockup problems with my program, but only when Internet explorer 8 is opened.
When I cover my form with another window and then uncover it, I find that it has locked up. My program has no references to IE and the only thing it even has to do with IE is using Process.Start with a web address.
My program works fine and exactly as it should, but only when IE is not opened.
Does anyone know why a program would lock up only while IE is running?
Edit: I've done some digging and I've found the offending thread in my program.
I don't know what starts this thread or what it does, but when I kill it, my program no longer freezes. The thread is one of the CreateApplicationContext threads, here is the last few items in the stack trace of that thread.
6 ntkrnlpa.exe+0x897bc
7 ntdll.dll!KiFastSystemCallRet
8 mscorwrks.dll!LogHelp_TerminateOnAssert+0x61
9 mscorwrks.dll!DllUnregisterServerInternal+0x10523
10 mscorwrks.dll!DllUnregisterServerInternal+0x10542
11 mscorwrks.dll!StrongNameErrorInfo+0x34387
12 mscorwrks.dll!StrongNameErrorInfo+0x34815
13 mscorwrks.dll!CreateApplicationContext+0xbc35
14 KERNEL32.dll!GetModuleHandleA+0xdf
Process explorer says my program is using no CPU nor throwing any exceptions while it is hung.
How to print excel file form vb .net without opening excel?
View 9 Repliesi'm trying to save an excel file after I open my excel application. This is what I have so far:
'Opens the report
xlPeakDemand.Visible = True
xlPeakDemandWorkbook.SaveAs("C:Documents and
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When saving as an xls it works fine but when saving as a htm its a disaster Just a bunch or symbols and stuff. BUT if I go into my xls document and Save As webpage from there, it works fine!
I am converting several VBA projects to Windows form applications. The only problem I have is that some of the functionality of Excel is essential to the application, such as R1C1 formulas. I do not want to instantiate the Excel application or access saved worksheets. All of the data is retrieved by querying Oracle databases. 2-Dimensional arrays are not an option because the columns contain differing datatypes, and DataGridViews are too slow to work with.
I thought simply dimming a Microsoft.Office.Interop.Excel.Worksheet object would be enough, but the program kept failing and upon inspecting the object's elements in debug mode, I found that every value says this:
{"Unable to cast COM object of type 'Microsoft.Office.Interop.Excel.WorksheetClass' to interface type 'Microsoft.Office.Interop.Excel._Worksheet'. This operation failed because the QueryInterface call on the COM component for the interface with IID '{000208D8-0000-0000-C000-000000000046}' failed due to the following error: No such interface supported (Exception from HRESULT: 0x80004002 (E_NOINTERFACE))."}
I am making a program that NEEDS to be password protected, so i made a textbox with a code so that when the user enters the right password it lets you in. But if the user/person enters a wrong password 2X it will kick you out. So is there a way to keep the
View 3 RepliesMy task is simple enough for most .net programmers , open a new work book in excel and view a new work sheet. I know how to program this task easily using vb.net, only because i had to do a similar task a few seasons ago. However, when I confronted this task last week my previous solution did not work. Here is my code.
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My company is currently using a Linux/Powerterm program that exports reports via email on a daily basis. I have a add-in program installed on outlook to automatically save the report to a folder on the server. The file that is exported appears to be an XLS 97-2003 Worksheet, but I confirmed from the original programmer that this file is not a true Excel file, I believe it is a unicode file, but it can be opened by Excel. I want to link these files to an Access database within my form, but Access does not recognize this file format.I attempted to create several programs in Studio to convert the file to an XLSX file, but on each attempt I receive an error the file is an in unrecognizable format which is killing me at the moment. I even made attempts to dump the data to an dgv but it still wont be accepted.
View 2 RepliesI've been trying to figure this out myself, but have just run into an issue I can't resolve with searching and examples. I'm trying to open an excel file to read from it, and I've figured out how to open a NEW excel file. I can't, however, seem to figure out how to open an excel file that already exists.
Here is what I have so far:
Dim objApp As Excel.Application
Dim objBook As Excel._Workbook
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
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I have an application that is being used to automatically email a form that is filled in by the user when they simply click a cmdButton. I have been asked to add a functionality that I can't figure out. The users want to be able to attach another document, using an emply cell in Excel to hold the name and path of the document, that still only requires the pressing of my cmdButton. The code that is being used to initiate the auto-email is:
Sub Mail_List_1()
Answer = MsgBox("IMPORTANT! You must be online to email! Click ""OK"" to email now if you are online. Click ""Cancel"" to email later.", _
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Okay I am trying to make a class library that takes information from an excel file and puts it into an access database, but I keep getting this dumb object reference error that always screws me over. Here is my
vb
Dim xlApp As Excel.Application Dim xlWbs As Excel.Workbooks Dim xlBook As Excel.Workbook Dim xlSheet As Excel.Worksheet Dim xlRange As Excel.Range Dim strExcelPath As New String("C:UsersAjDesktopTax_Research_Template_2010_-_Excel.xls") Dim accConn As String = "C:UsersAjDesktopTaxCert_be.accdb" Dim xlDT As New DataTable Dim xlDR As DataRow = xlDT.NewRow Public Sub XLMain()
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opening a program and type something in their textbox or click on button of program if you can tell me refrence or .net platform class that can i access to another filed program
View 12 RepliesI want to have a link in an email with an ID number. Then, when the user clicks on the link in the email, it either launches my program, or brings the program to top, depending on whether it is opened or not, and then loads the record for that ID number from the link (the software is a record lookup tool).If I can figure out how to "send" the program the ID, I can figure the rest out.
View 5 RepliesI have a problem with the encoding of characters when I try to open an excel file....Let's say that the excel file has the following text:
Greek | English | German
a,? .. | a,b,c,... | a,b,c...¶
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I have added "Microsoft Web Browser" to my windows form and I am trying to use AxWebBrowser1.Navigate("c:/file.xls") to load an excel file in the browser but it is launching the excel file outside the window? What am I doing wrong?
View 1 Replieshow to open an excel 2003 file in VS2008,what i want is to open an excel file there is only one sheet in it and 4 columns of data to read row by row and change certain values. that's it.
View 9 RepliesI've looked through some of the related topics to this newly created thread but none have answered my question. Refer to the following code below:
Imports Microsoft.Office.Interop
Public Class Form1
'declares the following Word and Excel variables as public
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We have created a dll to convert an excel spreadsheet to a csv file. At the moment we open the xls file, an eror occured (file doesn't exist / is used by an other user)
Used
Dim excel As New Microsoft.Office.Interop.Excel.Application
Dim wb = excel.Workbooks.Open("d:my.xls") '<<<<<<<<<<< not possible to open
wb.SaveAs("d:my.csv", Microsoft.Office.Interop.Excel.XlFileFormat.xlTextMSDOS)
wb.Close(SaveChanges:=False)
I cannot find any up-to-date information on the internet on how to successfully open an excel document from a VS 2010 application.
What imports/declares are needed to open, save, close and (if you know) how to enter current values of variables into certain cells in the Excel document from a Visual Studio 2010 application?
Dim excel As New Microsoft.Office.Interop.Excel.Application()
Dim wb As Microsoft.Office.Interop.Excel.Workbook = excel.Workbooks.Open(txtFileLocations.Lines(w))
Dim ws As Microsoft.Office.Interop.Excel.Worksheet = TryCast(excel.ActiveSheet, Microsoft.Office.Interop.Excel.Worksheet)
when the program tries to opens an excel file, it always throws me an error "Office has detected a problem with this file. Editing may hard your computer" and my program crushes.......The problem appears on the SECOND line, on DIM wb...blahblah.. i went to the office and unclicked the "protected view" checkboxes.. but it still throws me those errors. my guess is that the office i have in the computer is not the same as the one that my program uses to open excel files (i mean, i loaded/imported some excel.dll files in the program so i guess that will be the one) But how do i make the program not care if the excel file is "potentially dangerous"?
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when the program tries to opens an excel file, it always throws me an error "Office has detected a problem with this file. Editing may hard your computer" and my program crushes. The problem appears on the SECOND line, on DIM wb.
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We have created a dll to convert an excel spreadsheet to a csv file. At the moment we open the xls file, an eror occured (file doesn't exist / is used by an other user)
Used code:
Dim excel As New Microsoft.Office.Interop.Excel.Application
Dim wb = excel.Workbooks.Open("d:my.xls") '<<<<<<<<<<< not possible to open
wb.SaveAs("d:my.csv", Microsoft.Office.Interop.Excel.XlFileFormat.xlTextMSDOS)
wb.Close(SaveChanges:=False)
I know how to program this task easily using vb.net, only because i had to do a similar task a few seasons ago. However, when I confronted this task last week my previous solution did not work.Here is my code.Code:'using VS 2005 so i added the COM reference: Microsoft Excel 10.0 Object LibraryDim xlApp As Excel.ApplicationDim xlWorkBook As New Excel. the .Net Office Automation forum
View 8 RepliesI have this program that uses OLEDB connection to open the excel file, and imports it's data. Then I use mysql connection to inserts all this data. Now my question is, is it possible that I can use mysql connection in opening the excel file, or only OLEDB connection is the most possible way to open it?
View 2 RepliesIf an excel document is opened inside a webbrowser control, and you try opening another excel document using a different instance of the same web-browser control, the previous opened excel (inside the web-browser) would not allow users to edit the excel workbook.
View 1 RepliesPrint Preview without opening Excel application?
View 6 RepliesI'm trying to open an Excel file to get and set some values. Unfortunately, I have no choice, I must to work with Excel.
Dim xAp As New Microsoft.Office.Interop.Excel.Application
Dim xWkb As Microsoft.Office.Interop.Excel.Workbook
xWkb = xAp.Workbooks.Open("c:uploads este.xls")
Always I have this exception: (Exception from HRESULT: 0x80010105 (RPC_E_SERVERFAULT))
Need I Excel installed in server machine to open Excel files? I don't think so, because when I create a new application and workbook throught code, all things go right, but... its a possibility...