Opening A New Excel Application?

Jul 30, 2009

My 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.

[Code]....

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.net - Excel Worksheet In Windows Form Application Without Opening Excel Application?

Nov 18, 2011

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))."}

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Save An Excel File After Opening Excel Application?

Jan 28, 2010

i'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

[Code].....

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!

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VS 2010 Opening MS Excel From VS Application?

Mar 4, 2011

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?

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Office Automation :: Opening A New Excel Application?

Jul 30, 2009

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

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Print Preview Without Opening Excel Application?

Jan 21, 2010

Print Preview without opening Excel application?

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Print Excel File Form Without Opening Excel?

Jul 4, 2005

How to print excel file form vb .net without opening excel?

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Opening An Excel File

Apr 22, 2010

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.

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Opening Excel From Specified Location?

Feb 14, 2010

I'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

[Code]....

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Opening Outlook Using Vba In Excel?

Mar 23, 2010

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.", _

[Code]....

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VS 2010 Opening Excel With .NET?

May 22, 2012

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()

[Code]...

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Encoding While Opening An Excel File?

Jan 18, 2010

I 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...¶

[code]....

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Microsoft Web Browser Opening Excel

Sep 25, 2010

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?

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Opening Excel File In VS2008?

Jul 23, 2009

how 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.

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Opening Excel In Program Error

Sep 24, 2009

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]...

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Opening Word And Excel Files?

Apr 12, 2012

I'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

[code]....

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Program Locks Opening EXCEL?

Apr 3, 2012

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.

[Code]...

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VS 2010 Error Opening Excel In A Dll?

Apr 25, 2012

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)

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Error Opening Excel File From .net 2010?

Aug 26, 2009

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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Error Opening Excel File From 2010

Jul 26, 2011

[Code]...

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.

[Code]...

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Office Automation :: Error Opening Excel In A Dll?

Apr 25, 2012

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)

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Opening Excel File And Import Its Data

Feb 15, 2012

I 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?

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Opening Excel Inside Web Browser Control

Oct 14, 2009

If 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.

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RPC_E_SERVERFAULT Error On Opening An Excel File In Asp.net

Apr 13, 2011

I'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...

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VS 2008 Opening Excel Via Command Button?

Nov 20, 2009

how to open an Excel document via a command button.

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VS 2010 Opening Excel File Does Not Include Add-ins?

Mar 12, 2011

I would like to be able to have my users open an Excel file and include their add-ins they have installed and usually show up when Excel normally starts. Using this code, Excel opens with no add-ins visible:

vb.net Dim excel As Microsoft.Office.Interop.Excel.Application

Dim wb As Microsoft.Office.Interop.Excel.Workbook
Try excel = New Microsoft.Office.Interop.Excel.Application
wb = excel.Workbooks.Open(filelocation & "checks.xls")
excel.Visible = True

[Code]...


Is there a property to allow add-ins when opening an Excel file?

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Error Opening Excel File Read Only ODBC?

Sep 25, 2009

Error Opening Excel File Read Only ODBC

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Opening An Excel Template For Editing Via Process.Start()

Jun 3, 2011

I need to open a .xlt for editing, like so:

System.Diagnostics.Process.Start("Template.xlt", "Editable=True")

But I don't know the correct switch in Excel. This is the same as right-clicking on an .xlt and choosing "Open", whereas the default action is "New".

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Opening Excel File,object Disposed Exception?

Mar 12, 2009

I am have an exception when I run the following code :

Private Sub MainMenuForm_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Try
'Save the Sum of the Existing "Excel" Processes:
For Each Proc As Process In Process.GetProcessesByName("excel")

[code]....

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Opening Excel Files - Force It To Read As Text ?

Jun 11, 2010

Application using ado.net

When reading data from an excel file the driver tries to detect the data type of a column based on the contents of that column.

Once it's decided on the datatype then data that is not compatible with that datatype is simply ignored and returned as Null when you read that column using ado.net

For example if most of the column contains numbers then the occasional cell containing non-numeric data is returned as null.

Is there a way to force it to always return all data as text no matter what the actual column contains. ?

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