Open - Edit - Read Excel File Columns?
Sep 23, 2009How do I open, edit, read excel columns in vb.net? Like, for example, I want to know the values of column B up to the cell that it contains values.
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Edit The Rows And Columns Of An Excel File Using Vb 2010 Express?
Apr 6, 2012I want to edit the rows and columns of an excel file using vb 2010 express. NOTE : I dont want to open .exl file but want my program to read and edit them according to user. PS : I want to edit them according to cell number.
View 6 RepliesRead From An Excel File That Is Already Open?
Jun 6, 2011I want to rewad values from an Excel file that is always open and updating. I was using standard code to open up Excel and read from it, which worked fine, but that opens a new instance of the sheet. I need to read from a sheet that's already open.
I'm using xlWorkBook = xlApp.Workbooks.Open("c:\example.xls") which opens a new instanc of example.xls.
If example.xls is already open, is there a way of reading from it?
Read From An Excel File In Program When It Is Not Open?
May 4, 2012I have a vb program that reads data from an excel sheet and displays it in a datagridview. The problem with this program is that it is able to read the data and display it only when the excel file is opened but when the excel file is not opened, it gives an error report that[code]...
View 1 RepliesRead / Edit Excel Cells Into Textboxes?
Dec 20, 2009I need to be able to take numbers from multiple textboxes and input them into certain cells in Excel. Also need to do the opposite (Read numbers from Excel and put them into textboxes.)
View 2 RepliesReading Excel In .NET - Some Columns Are Read In As Null?
Sep 27, 2009Reading Excel in .NET - some columns are read in as null
View 10 RepliesOpen And Edit A Dbf File?
Jun 24, 2010I am new to programming, I have used vb6 a few times but am now trying to learn vb. net using micrsoft visual studio 2008. I am trying to open a dbf file and then then allow the user to edit the field headings and type of field. I am trying to start off with the basic of just open the dbf file and populate a listbox with some properties of the table such as field heading and the type of field, (ie string, or double) and then later look at how to edit and save the new table.
View 1 RepliesOpen & Edit Dwg File Without Autocad?
Jul 1, 2011I am trying to open a dwg file in vb.net forms without opening a autocad application But tere occur a problem : The specified module could not be found. (Exception from HRESULT: 0x8007007E).Also i want to edit the image in dwg file i.e most probably a factory layout & store information about object used in layout to figure out the best possible way to reach from source to destination.This factory layout map is input for a robot which will move according the path avaiable.
View 1 RepliesExport To Excel Excel Could Not Open The File Because The File Format Is Not Valid?
May 8, 2012I have this issue that occurs with me and driving me crazy i have a report that contains thousands of records and i need to export it to excel , but the excel normal extension .xls
is showing missing records at the end of the file , so i save my file as an .xlsx extension it saves correctly but when i open the file it generates an error
"Excel cannot open the file '<var>filename</var>.xlsx' because the file format for the file extension is not valid. Verify that the file has not been corrupted and that the file extension matches the format of the file."but when i test the file i drag it and open it in an empty notepad all the records shows up correctly
Read In Only The First 2 Columns Of A Txt File?
Aug 11, 2011I'm trying to read in only the first 2 columns of a txt file into 2 lists but am having problems getting the split function working. When I read the file the first strfields = "5.000 300.000" and the second strfield falls over.
Samples text:
0.000 300.000
5.000 300.000
10.000 300.000
[Code].....
Edit Save Open A File Of Own Type
Apr 29, 2011I have been using Visual Basic for about 2 weeks now so I know I am getting in over my head at this point, but times a factor. I have created a user form with around 100 User entered text boxes and pull down menus, tabbed pages etc. I can create a distributable file with no problem. However I cannot find any kind of example, tutorial, etc that will show me how to allow an end user to save the form as "enterfilenamehere.DCP" (for example) and then reopen any .dcp file created in my form application. The only examples and tutorials I can find are how to type text and save it as a txt. format. Could someone lend a complete novice some advice or point me in a good direction on where to learn about saving and opening custom file types?To clarify The user can use my form, But at this point has no way of saving and recalling what they entered in my form. It's a one time use only...not really what I want.
View 7 RepliesOpen And Edit An MS Word File With Program?
Apr 25, 2011I have a need to do some extensive editing on some SGML files. SGML is, of course, just tagged ASCII files. But, I need to convert that SGML to nice, neat MS Word files, with paragraph styles. I need to do extensive searching and replacing. VBA does not have the necesary regular expression support, so, I need to use VB.Net. But, I'm at a loss to do the most basic thing. I just need to know how I can open a Word file in VB.Net.
View 5 RepliesOpen And Edit Word File Using VB 2008?
Apr 12, 2009I am doing a project using Visual Basic 2008 (Windows Application). I need to show the results of my calculations in a Word (2007) document. I have a template (report) that contains the header/paragraphs/Tables.. What I need is to fill the blanks in this document using Visual Basic and insert pictures in that document.
View 1 RepliesRead Data From Excel But Can Open Exel In Normal Windows?
Mar 31, 2010I want read data from excel file and it's done.but I've problem about excel that open from program. I cant edit or open that file from ms Office.sample:I have masterCode.xls in my local drive. with vb i open that file, read data and bind into gridview.it's work. after close program, i open masterCode.xls with ms Office, that file opened but it automatically closed.when i open vb and run program again, select the same file, read data but now its error ("File is used").
Protected Sub btnUpload_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnUpload.Click
Dim objExcel As Excel.Application
Dim objWorkBook As Excel.Workbook
[code]....
Read A Text File's Columns?
Jun 17, 2009Essentially my program asks the user for their name and a number, and it stores both values in a text file. However, when retrieving the code from a particular line it cannot separate the number from the person's name.will I have to use a new line for every entry, or is there some way to tell my program to differentiate between columns in the code?
[code]....
[2005] Can't Open Excel File By Using XlApp.Workbooks.Open?
Feb 11, 2009I would like to open the excel file after create the excel file. The creating file function is done, but the system unable to open the excel file. My coding as below:
Dim xlApp As Excel.Application
Dim xlWorkBook As Excel.Workbook
Dim misValue As Object = System.Reflection.Missing.Value
[code]....
Asp.net - Edit Excel File On Fileserver From Gridview?
Apr 4, 2012I have a requirement to allow users to browse directories on our file server, and allow the users to navigate to an excel file open it, potentially update it and save it. I have it working. I have 2 gridviews - the first binds to an array of DirectoryInfo and the second binds to an array of FileInfo. I render the name of the file as a link in the grid, like this:
a href='file:///<%# Eval("FullName") %>' target="_blank" >'<%# Eval("Name") %>'
When the link is clicked, the excel file is opened within a browser. In order to save, it seems they have to do 'save as...' and it's confusing. Here is where my questions are. What's the difference between opening an excel file within a browser, vs. opening it with excel? Can I have a link to the file in my grid as above, but cause it to open using the Excel application instead of the browser? Does it matter that the excel files are on a file server? I think my users would be more comfortable editing the file within Excel - not in the browser. How can I accomplish this?
C# - Open A Read Only File As Non Read Only And Save/overwrite?
Sep 21, 2011I have a number of word documents I am converting. Everything is going great until I get a file that is read only. In this case I get a Save As prompt.
Is there any way to open the file in read/write format? I should have admin privileges so access isn't an issue.
I'm using VB.net to open the files. More specifically
doc = word.Documents.Open(path, Type.Missing, False, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing)
Open Excel File And Reusing Existing Excel Instance?
Jul 13, 2010I 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.
Took Oledbconnection With Excel File But Unable To Open That Excel Manually?
Mar 10, 2009I took oledbconnection with excel file, after disposing this connection i m still unable to open that excel manually,It shows some access error.
View 1 RepliesImporting Columns From An Excel .xls File
Apr 21, 2010I wish to modify a pre-existing procedure to import just the first four out of five columns from an Excel .xls file, which may be viewed as a "physical file" on the local hard drive.
[Code]...
VS 2008 : Use Code To Read Excel File With Excel Installed?
Feb 7, 2012I am uploading an excel file to my app and want to read it. Do I need to have excel loaded to read this?I am getting an error of Object reference not set to an instance of an object.
Public Function GetExcelData(ByVal ExcelFilePath As String) As DataTable
Try
Dim OledbConnectionString As String = String.Empty
[code]....
Read A Text File That Contains 2 Columns Of Numbers?
Oct 13, 2009i\m trying to do an application that read a text file that contains 2 columns of numbers and put it in 2 columns in a table
View 6 RepliesDeclare File Formats And Then Open And Save Them Edit Any Format
May 23, 2009i want to open dds files using vb.net i know file format of dds..can some give me tutorial or a link to tutorial on how to declare file formats and then open and save them edit any format.
View 8 RepliesVS 2005 - How To Read / Edit Text File In Project Resources
Mar 19, 2009I have a text file pwd.txt comma delimited, I added in project resources, now i want to read,edit and insert in text file.
View 1 RepliesDB/Reporting :: Read Excel File Without Excel Installed Using VB?
Feb 27, 2012I tried to read excel file using the method i found here [URL] But i get an error on ADODB.Connection saying "Type 'ADODB.Connection' is not defined" in the following code:
Code:
Private Function GetExcelConnection(ByVal Path As String, _
Optional ByVal Headers As Boolean = True) As Connection
Dim strConn As String
[Code]....
Its was used in VB6... do i need to do something special in Visual Studio 2010?
Copy/Paste Excel Columns From One File To Next?
Sep 17, 2009how to open an existing XL file and copy a column of data and then paste it to a column of another existing XL file ?
View 1 RepliesProtect Excel Workbook - Don't Want The User To Edit Anything Inside The File?
Mar 5, 2009I'm currently generating some excel files using vb.net (2008). I want to protect the workbook or sheet inside, so that the user cannot edit anything within the file.I tried some options from MSDN but no luck and some other forums but no luck.The following is my last few lines of code in the program.
Code:
ExcelReport = New Excel.ApplicationClass
ExcelReport.Workbooks(1).SaveAs(ExcelFileName)
I basically don't want the user to edit anything inside the file. Perhaps a printout is allowed.
Read CSV File Into Array Sort / Add / Edit / Delete And Write Back To CSV
Aug 15, 2011The gist of the program is to:
- Read a CSV file into an array
- Get this visible in a list box, so the values can be:
- Sorted
- Edited
- Deleted
- Added
- Finally save these manipulated values back to the text file
Would love some suggestions and code as to how to get this going, hopefully I'll get the hang of it and come back and fourth for help
Reading Excel File With Gembox - Columns.Count = 0?
Sep 1, 2011im usinf Gembox to read Excel files.I'm copying the fields to a datatable, so i have to add the columns to the datatable first.
Therefor im using this code:
For i As Integer = 0 To objWorksheet.Columns.Count - 1
objDataTable.Columns.Add(i, GetType(ExcelCell))
Next
But objWorksheet.Columns.Count is 0 even if theres data in 4 columns.