I want to know how to open an existing Excel Spreadsheet into a MemoryStream to that I can write to the Response object.
Dim ms As MemoryStream = CreateBasicWorkbook(True)
Dim FileName = "\Ihe-webprod1tvinjurytrackingdocuments$ExcelSpreadsheetsHours.xlsx"
I need the code to get File the xlsx file to a memory string
Response.ClearHeaders()
Response.ClearContent()
Response.Clear()
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I am attempting to write the entire contents of an ADO.NET DataSet to an Excel 2007 spreadsheet and, while having partial success, I am unable to dump the contents of the DataSet into the .xlsx file. "Partial success" meaning that I can generate the spreadsheet(s) ok, but cannot get the DataAdapter.Update to work.
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I am working with some prewritten VB code ,and this portion of code opens a new excel spreadsheet . I would like to instead , open a existing excel spreadsheet that I would like to have a template that explains my data that is loading into it. Could you please give me an idea what I would need to do with this portion of code?
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I am writing a windows application that interacts with data stored in an Excel Spreadsheet. I merely want to change the text value of a cell that already has text written in it.
View 2 RepliesI am looking for an example to export the data from a dataset to an existing excel speadsheet in vb.net 2005?
View 6 RepliesI'm trying to export a datagridview to Excel and open the Excel spreadsheet (not SAVE the worksheet).
Public Sub ExcelRpt(ByVal DgvName As GridView, ByVal url As String)
Dim xlApp As Microsoft.Office.Interop.Excel.Application
Dim xlWorkBook As Microsoft.Office.Interop.Excel.Workbook
Dim xlWorkSheet As Microsoft.Office.Interop.Excel.Worksheet
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How to write to Excel worksheets without open Excel Application.[code]...
View 4 RepliesI have an application the contains several excel files bundled with it. I'm not opening the files and processing them within my application. These files contain a data-connection to reload all of the pivot-tables within each excel file. I have a 'link' on my form, that when clicked, it determines which file to open and calls a sub using filename and executing Process.Start(filename) for any excel file I want to open. I have no problems opening any one of the files and then exiting excel.
The problem is when I 'close' a file, but don't exit Excel; then try to open another file(clicking link on form)... it creates a new instance of Excel.
I know from experimenting that the fileopendialog form will 'reuse' an existing Excel instance, IF it does not already have a file open.
How can I do the same thing without using the fileopendialog?
I don't want the end-user to have access to the folders where these files live. That's why I have multiple 'links' on my form, one for each xls that already exists. I just want them to be able to click on a link and the xls file opens AND if they choose to merely 'close' a file and not exit... Don't create a new instance of Excel, but re-use the existing one.
I have posted this in other parts of the forum but either im not understanding what they are saying or they arent understanding my question.My goal is to open a word document or an excel spreadsheet from within my seperate VB app. bounce some of my calculated variables and images out to specific markers in that document, and then print the document.
I can Open my office doc, I can send the test variables out the way they need to go out. I cannot get an image to go out to th open document from within my vb app.I feel like it is something relatively dumb in my code but i cannot figure it out.
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The issue i have with that line is that even though i have made a picture object in my excel sheet called Picture1 it is not public and i cannot access any of its members to modify it.
I need to make a zipped copy of a spreadsheet I create in xlsx format in Access2007. This needs to follow the creation of the spreadsheet as the path and file name are also created programmatically.
My code at present is:
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I have successfully created a new excel with the code
[xlApp = New Excel.ApplicationClass]
and can transfer and manipulate data from my VB2008 form back and forth with the spreadsheet One time only each time I try and add additional data it wants to open a new workbook with the same name but cant seem to get it to just add the additional info.
I have questions on this [FAQ's: OD] How do I open an existing Excel Workbook? I have playing around with the code little. Trying to mod the code to display the selected path and File name in the textbox I have on a form. I can to get it to work right
View 1 Replieshere is a copy of my current code. Am trying to open an existing Excel spreadsheet then retrieve the old balance data refigure the new balance and store new data into the spreadsheet. Am I on the right tracK, or way out in left field?
Private
oWB.SaveAs(
"Checkbook.xlsx") Nothing
oWB.Close()
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I have a VB.Net program that reads in a flat file, and then parses line by line, formatting the data into different spreadsheets in an excel workbook (each line can be any 10+ different record types so I parse and put in appropriate excel sheet).
For smaller sized flat files (under 10mb), the parser works great. However, I am trying this on a file that is over 120mb (400k+ lines). While running, I will get an OleDBException saying that the spreadsheet is full. Now I am pretty confident that Excel can handle a much larger data set than a flat file. So I assume this exception is not giving me the true story as to what is really occuring.
I open a connection, and then parse each line in the file, inserting each row into the excel file. I assumed it would be bad performance wise to open/close the connection between each insert. Could this be causing the issue? Any ideas what I need to do to handle such a large file? There are cases where the flat file can be over 500mb.
To actually do the insert into excel, I am just doing the following (I construct an sql query based on the type of row and values parsed):
Dim conn As New OleDbConnection()
conn.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + ExportLocation.Text + "" + importFileName + "-PVF.xls;Extended Properties=""Excel 8.0;HDR=YES"""
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I made it through opening an Excel Worksheet, and now I"m getting an error when I attempt to open the worksheet called "DTNPrice". Most examples I have found relate to creating a worksheet. I'm using Visual Basic 6 and Excel from Office 2003. I just need to open the worksheet and place about 300 lines of data in the worksheet.
View 1 RepliesIs there a simple way in vb.net to load an excel file and read it? perhaps there is a way to load the file but have it not be visible to the user?
View 4 Replieshow to Read Excel XLSX through DotNET?
View 1 RepliesI have a spreadsheet control on a windows form that I would like to populate with data from an existing worksheet (myworkbook.xls, sheet1).
View 4 RepliesHow do i this?Import data from XLS,XLSX,CSV,XML excel file to .NET?
View 6 Repliesi am new to vb.net programming i am trying to access excel worksheet pre defined with name Books.xlsx through vb.net i have taken a form with one command button i wrote below code in that:Imports Microsoft.Office.Interop Imports System.Runtime.InteropServices
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I have used the Process.start function to open an Excel file as shown in the code
Process.Start("report.xlsx") and it works perfectly well.
My question is can this function be used to open a particular worksheet called Report1 in the report.xlsx file. If so what would the code be.I have spent many hours trying to research this topic but without success.
i am new to vb.net programming i am trying to access excel worksheet pre defined with name Books.xlsx through vb.net i have taken a form with one command button i wrote below code in that:
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I used Visual Studio 2005. It works well when testing, but when I publish it got error: Microsoft Office Excel cannot access the file 'D:OfficeStationaryV0.2ReportTMPReportItem.xlsx'. There are several possible reasons: - The file name or path does not exist. - The file is being used by another program. - The workbook you are trying to save has the same name as a currently open workbook.
my following code is:
Dim ExcelApp
As New Excel.Application
Dim xlWorkBook
As Excel.Workbook
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if any of you have called up excel spreadsheet data within your VB.net app. Is it at all possible instead of calling up access and the like?
And just before some overzealous person puts "we will not do your work for you blah blah blah......" Im not asking you to write it for me, im just asking if its possible, has anyone succeeded in doing so?
Id rather not use VBA script if possible, Id like to create my own app and use a spreadsheet that has all my workings on already - sorry if its a bit noobie to ask such a daft question but one of my friends is going to be opening a restaurant soon and asked me if i could do a little prog for him using his excel stuff
am doing a application on excel spreadsheet converting to .exe
View 4 RepliesI am having trouble creating an excel spreadsheet and then importing data from a textbox file with heading 1 going in a1, heading2 going in a2 and the data being entered in in b1 and b2 etc.
View 1 RepliesI am trying to write a program that will display an excel spreadsheet in Visual Basic. My goal is for the program to display this Work Order Form I have designed in excel and to modify user, date and auto assign a work order number. After that is done I would like to print the excel form. So I guess my questions are:
- How can I display an excel spreadsheet in win forms
- How can I print the spread sheet after it is modified
- Is there a better way I should be doing this
ive got excel spreadsheets that i would like to open in my windows forms as part of my program,ive put an Axspreadsheet on my page but how do i open up an excel file into it. Looking at opening the whole of the data so all the worksheets and workbooks and what not. User only need to "look at it/browse it" so to speak.elimintate a problem wit hreading a writing issue to excel ive got, using different pcs and get and im not allowed to set up a "trusted area", so everytime i open the excel file itself i get an error saying cant use the "characters ! %&*<>
" and is your filename less than 218 characters.ive finished coding for today, so will be on tomorrow.
Ive been trying to figure out how to find the next empty row in an excel spreadsheet.My project is a VB project, written in Visual Studio 2010 Express.What i need to do is open the spreadsheet (that is predefined) and find the next available row. (in column A through to S)My code so far for this little part of my prject is:
Dim xlApp As Excel.Application
Dim xlWorkBook As Excel.Workbook
Dim xlworksheet As Excel.Worksheet
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The same as "Selection". I get a blue line for "ActiveCell" Doesn't work.
In my latest project, I'm iterating through an Excel Spreadsheet and importing the information from it into a DataSet row for row. Based on certain conditions (namely, the text in a certain column on the spreadsheet). For certain conditions, the app is to write the row into a new spreadsheet and email that spreadsheet as an attachment to a pre-defined email address.
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