How To Add Data To An Existing Excel File?
Jan 13, 2011Please see the code below:
Dim objExcel As New Excel.Application
Dim objWorkbook As Excel.Workbook
Dim objSheet As Excel.Worksheet
[code].....
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Writing Data To An Existing Excel File
Mar 16, 2010I'm fairly new to coding in Visual Basic, and I'm working on a project where I have to allow users to write data to an existing Excel worksheet (by entering the data into a form created in Visual Basic.NET). I've created a form that allows users to enter data such as the following:
[Code]...
Writing Data To An Existing Excel File?
Mar 15, 2010I'm working on a project where I have to allow users to write data to an existing Excel worksheet (by entering the data into a form created in Visual Basic.NET). I've created a form that allows users to enter data such as the following:
Name (First, Last)
Mailing Address
Email Address
Gender
Age
...and so on. I've programmed the data to be sent to the Excel file upon clicking on the Submit button in the form itself. I've also created the Excel file and placed it on my C: drive, but the problem I'm having is trying to send the data from the VB form to the Excel file itself. Can someone please show me some sample code or point me in the right direction as to how to get the submitted information from the form to save into the Excel file, please?
I'm trying to get the information to show up in rows and columns in Excel like the following below (the dashes are just to show that the information should be in rows and columns):
Name--------------------------Mailing Address-------Email Address-------Gender-------Age
John Doe---------------------2300 Jackson Street-------- xxx@xxxx.com-------Male---------17
Export Data From Gridview To An Existing Excel File?
Apr 7, 2012I need to save the results of each search that I run on my database, into an excel file. So it is an iterative process where the new search results are added on as new rows to the excel file in each export. I am running the following code which works perfectly fine but for the fact that each export is saved to a newly created excel file.[code]...
View 1 RepliesCopying Data A File Int An Existing File Where The Filename Of Both The Data File And Existing File Will Vary From User To User
Aug 5, 2011I have a workbook (Workbook1) that runs through some steps using visual basic, which ends up opening another workbook Workbook2). Once Workbook 2 is opened, I need to copy a section of data from it, into Workbook1 int a specific worksheet. I was able to do this by recording a macro, but the challange is, the name of Workbook 1, and Workbook 2, will vary by User. When I created the macro it uses the files as they are currently named. The section of code is below.
[Code]...
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.
Editing Existing Data In An Excel Spreadsheet?
Dec 6, 2009I 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 RepliesInsert Excel Data Into Existing MS Access Table?
Mar 23, 2012I have this piece of code which picks the data in an excel file. At the moment i have the data into the dt table. how do i write the data in dt to FECHO_UNICRE table at the UTLT.accdb database? I want to fill the table just after deleting the existing records.
Octavio
Private Sub Unicre_Calculos_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load
'Try
[Code]....
C# - OpenXML Add New Row To Existing Excel File?
Jul 12, 2011I've got lots of XLSX files and I need to append a new row after the last one in the file. I'm using OpenXML and so far I know how to open/create spreadsheet, but my search for adding new rows to existing files returned nothing.
View 1 RepliesAdding To Existing Excel File From Datagridview?
Oct 17, 2010I'm trying to figure out what would be the easier method for what I'm trying to accomplish. What I have is in, on the main form, a datagridview that is bound to an xls file. I then have another form that the user can import/paste data to another dgv. This content then needs to be appended to the end of the main form's dgv. Would it be easier to add it straight to the dgv and then save it to the excel file or save it to the excel file and reload the dgv? Or does it matter? I'm not exactly sure how to do either method but I figured I would start here.
View 1 RepliesInsert Blank Row Into Existing Excel File?
Apr 1, 2011how to insert a row into an excel file via vb.net?
I am familiar on how to do this inside the spreadsheet using vba - but not certain how to accomplish this within vb.Net.
Load File From Excel If It Has An Existing Cell
Apr 23, 2012the following is a working button to load excel data into a listbox. When I first wrote it I just used a loop to pull items 1-10 to do testing. Then sufficiently forgot about it and remembered just now. So in short here's the button:
[Code]...
Modify The Third Column Of An Existing Excel File?
Dec 18, 2009I want to modify the third column of an existing excel file. The problem with below code is a new file is prduced with the new values in Column C and erases all other values in the orginal file. I want to update the orginal file with the new values.
Public oExcel As Excel.Application
Public oBook As Excel.Workbook
Public oSheet As Excel.Worksheet
[Code]....
Adding A Rdlc Report To An Existing Excel File?
Jun 2, 2011This may be a lengthy explaination, but I am hoping to make myself clear.I have an existing Excel file that is created using the following code:
Dim warnings() As Microsoft.Reporting.WinForms.Warning = Nothing
Dim streamids() As String = Nothing
Dim mimeType As String = Nothing
[code].....
Import Single Column Excel File To Existing SQL Server Table?
Dec 15, 2009i need to import a Single Column Excel File to an Existing SQl Server Table.
View 1 RepliesRead In A Csv File, Manipulate The Data And Then Update The Existing File?
Nov 24, 2010I have a csv file that needs to be automatically updated on a daily basis. I am writing a vb.net app to accomplish this. However, Im having issues with the entire process.I need to be able to read in a csv file, manipulate the data and then update the existing file. I have dabbled with using the Excel objects but I need some assistance.
View 6 RepliesHow To Write Data Into An Existing PDF File
Apr 6, 2011I Have an existing pdf file with some editable fields like text boxes and text boxes, where i can enter data manually and save the file,
View 1 RepliesReading In Data From One Excel File Write That Data To A Different Excel File?
Sep 28, 2011I am reading in data from an excel file that is only viewed inside the program. This excel file is being populated by data from multiple PLCs (7) through DDE links via RS Linx Gateway. I would like this data to be written to two different excel files and specific sheets within those so that it can be viewed later on.
My program has a form that will allow the user to view the data live, meaning they look at the first excel file from the program so that they are not able to edit the DDE links or change the file in any way. The other excel files (there will be two, one for good parts, one for bad parts) have specific sheets for each part and each tester station. For example, if the part is a ABC part, and it is a good part, and it was tester on tester station 1 then it needs to be saved to the good parts excel file, in the ABC sheet and in the good tester station 1 sheet.
If part XYZ comes along and is a bad part (fails testing) then it needs to be saved to the bad parts file, the XYZ sheet and the bad tester station 1 sheet.I might have added more detail than is needed to solve the problem but I thought I would add it anyways to help you all understand my problem a little better.
VS 2008 Saving To .txt File (WriteLine Overwrites Existing Data)?
Apr 22, 2009I have the below code simply to save a name and email, however i want to preserve the current lines in the text file.
'Pass the file path
sr = New System.IO.StreamWriter("subscribers.txt")
'Write a line of text.
[code].....
VS 2010 Load Data From Text File Into Existing Table
Aug 18, 2011I'm using the following code to import data from a text file into an existing Access table:
[Code]...
The first time i ran the code, it caused no error but no records where loaded into the table. The second time it causes the OleDbException "Table 'TEMP' already exists."explain me wath am i doing wrong? The text file is comma delimited and it has exactly the same number of columns of the TEMP table.
CSV Combined With Existing Excel - Last Tweaks
Jan 28, 2012Forgive me for being a twit! I am thought I was combining csv file with excel file in different worksheets. I have used the copy and paste functions to combine my csv file with excel file. But..the csv file seems to copy over the login data I have stored in Sheet 1. Can anyone spot why? I thought I'd finished....just a few more tweaks away.
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Utilize Existing Excel Process?
Nov 13, 2011I am currently building a vb windows form application (.net 3.5 framework). For the next part of the application I want to be able to use an existing excel process which will have been checked out from sharepoint and manipulate the worksheet with my app.
View 1 RepliesOpening An Excel 2003 File Then Searching That Open File For Data
May 22, 2012I need to open an excel file from vb.net and then search it for specific data. I then need to take those data and insert them into text boxes on a form that i have created. This is all controlled by a button click. I already have some code that will open a file dialog box and let me navigate to the correct file, but I am having trouble with the search portion. I have tried the Find function but I am not sure of the proper syntax. I am using Visual Studio 2008 and Excel 2003.
[Code]...
Transfer All Data From An Excel File To A Notepad File With Comma Separator?
Apr 11, 2011I have an excel file i want to copy all the row of that excel file into a .txt file.In the txt file the separator is comma.
View 8 RepliesParse A Text File And Extract The Data To Excel File?
Jun 23, 2010How can I parse a text file and extract the data to excel file. The text file is in the following format
CustomerInformation
Tim Alen
596 George Town
[Code].....
VS 2008 Write Data From A Text File To Excel File?
Oct 7, 2009I have a text file and I want to take the data from the text file and write each line into the excel file (into the same column). How do I accomplish this? I know how to read data from a text file, but I don't know how to insert the data to a excel file..
View 5 RepliesExport DataSet To Existing Excel Spreadsheet?
Nov 30, 2007I am looking for an example to export the data from a dataset to an existing excel speadsheet in vb.net 2005?
View 6 RepliesExport DataSet To Existing Excel Worksheet
Nov 4, 2010VB2005. I have several DataSets that I create or grab from an external source. One example is
Dim sql As String = "SELECT TOP 30 * FROM myTable" & vbCrLf & _
"WHERE Area='YY' AND CarNum='734EP' " & _
"ORDER BY ProcDate ASC;"
Dim da As New OleDbDataAdapter(sql, myOLEDBconn)
'create a dataset and fill it with the returned data.
Dim ds As New DataSet
da.Fill(ds, "MyData")
Once I have these DataSets I then have to pump them into a specific worksheet in an existing Excel2007 workbook. The connection and interaction with Excel and the workbook/worksheet is already established and that works. But I am stuck in exporting the DataSets
into the specific worksheet.
Note that I have already scoured the web and MS Community site and all code that I have found so far iterates through each and every row and column of the DataSet and then adds that to the worksheet in a cell by cell manner. This is fine and in testing that works. But there has got to be a better way to do this. For even a moderate sized DataSet the exporting just takes a long time. 25 records with 15 columns takes about 10 to 15 seconds.
I've also been experimenting with some scratch code I found that converts the DataSet to an ADODB Recordset and then uses the xlwksht.Cells.CopyFromRecordset function to export it in one fell swoop. I haven't got this one to work just right but it seems in the end it also does an iteration through each and every record and field to convert to the ADODB recordset.
IDE :: Open An Existing Excel Workbook From A Form?
Dec 5, 2009I 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.
Import From Excel Into Existing Access Table?
Mar 22, 2012how to import the data in an excel 2007 file located on the local computer or on the network into an EXISTING Access 2007 table? The excel file contains a single sheet.
View 7 Replies
