Find/control Open Excel Files?
May 12, 2009
Upon my program startup, I need to see if an Excel 2003 file with a certain name is open and then control it (set a reference to it). Unfortunately, the path of the Excel file is not set; else I could just detect if that file was open. So I guess I need to somehow loop through all open instances of Excel; then once I set an Excel app reference to each instance I could loop through the workbook names... But how would one go about looping through open instances of Excel in VB.net 2008?
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Jun 20, 2010
which are the control used to display word files and excel sheets inside vb.net forms ? (i have already added reference lib.)
Platform: Vb.net (framework : 3.5)
language : visual basic
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Jun 25, 2009
Here is the problem: I have written an application that opens an excel file, copys a chart to the clipboard, then closes the excel file. It works fine except under a very special condition. If the user has an excel file open and then runs my application, the open excel file closes. To make this more confusing, if the user then reopens an excel file and runs my application again, everything works fine. It will continue to work fine untill the user reboots his or her computer. Then it will occur again one time
Here is the section of code I found the problem is in:
Private Sub Get_R1C1_Image() 'Gets excel data to display
Dim objXLS As Object = CreateObject("Excel.Application")
[code].....
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Jan 21, 2012
My randomised image poll generates 6 csv files. Each csv files have the contents of three listboxes
Private Sub SaveButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles SaveButton.Click
Using sw As StreamWriter = New StreamWriter ("C:\Users\Riz\Pantfile.csv")
For i As Integer = 0 To ListBox1.Items.Count - 1
[code].....
1) how to assign column titles to each column? 2) How do I combine several csv files into an open excel file? I've looked at several things. There are no commas in my csv files. All values in columns.
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Apr 3, 2012
I need to find a good control for VB.Net to upload big files to an FTP server:
Can upload files up to 10GB
Uses passive mode
Provides feedback during upload, to make sure it's going OK
Can cancel and resume
Up to two concurrent connections
I read about WebClient + NetworkCredential, but it doesn't seem to provide progress infos. There are also the FTPWebRequest/FTPWebResponse classes from WebRequest/WebResponse, as well as WebClient.UploadFileAsync.
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Jun 19, 2009
Whether I am using VB 2008 Express or VS 2010 Beta 1 Visual Basic, I get the same error: "Debugging information for 'EXCEL.EXE" cannot be found or does not match. Cannot find or open the PDB file" I have filled in the Debug Tab information: Start external program: C:Program FilesMicrosoft OfficeOffice12Excel.exe
[Code]....
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Aug 18, 2011
I'm trying to copy multiple excel source files into one excel file. My current code is working only for 3 source files..If more than 3 files are there, it doesn't copy the data but creates blank work sheet in the output excel file. Lets say I have a source folder with 5 excel files. Each workbook contains one worksheet with data. It copies upto 3 worksheets along with data into output excel file.
Lets say excel1 contains A as work sheet, excel2 contains B as work sheet ,excel3 contains C as work sheet ,excel4 contains D as work sheet ,excel5 contains E as work sheet .Now my output excel file should look like..OutputExcel with A, B, C, D, E along with respective data.But my current code is giving output as A,B,C worksheets along with respective data but its creating blank sheet1,sheet2 in place of D & E.
SSIS Script Task Vb.Net Code:
Public
Sub Main()
Dim filePath
As
String =
[code].....
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Feb 11, 2009
I 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]....
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Jan 10, 2012
I'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
[code]....
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May 11, 2012
I have a VB.Net App that on ButtonRun_Click open Excel to get the "tab" and "column" then another buton that past content from textboxes. I get a "COMException was Unhandled" If I reopen excel it's in use.
Private Sub ButtonRun_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ButtonRun.Click
Dim MyExcel As New Excel.Application
[Code]....
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Jul 13, 2010
I 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.
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Mar 10, 2009
I took oledbconnection with excel file, after disposing this connection i m still unable to open that excel manually,It shows some access error.
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Jun 3, 2010
I have a SQL Server table with a list of files (path + filename), and a folder with multiple layers and files in each layer. I'm looking for a way to reconcile the two without having to process the list twice. Currently, I'm doing this:
For Each f as FileInfo In FileListFromDatabase
If f.Exists is False, mark it as deleted in the database
Next
[Code]....
Is there a better way to do this? I'd like to avoid converting all the matching files (of which most will be) to FileInfo objects twice. Since I'm a T-SQL developer first, I'm picturing something like an OUTER JOIN of the two lists where they don't match. Something LINQ-ish?
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Oct 23, 2009
The following code works fine but seems to leave instances of excel.exe running in the background. How do I go about closing out this sub properly?
Private Sub ReadExcel(ByVal childform As Fone_Builder_Delux.frmData, ByVal FileName As String)
' In progress
childform.sampleloaded = False
[code]....
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Feb 12, 2012
[URL]..a good way to create Excel files without using Ms Excel,but this is C# source code,I used [URL]..to convert from C# to VB.NET,but after conversion There are some strange errors :
Error21Too many characters in character literalc:BBBXLSExportDemoXLSExportDemoExcelDocument.vb1625XLSExportDemo
Error22Empty character literalc:BBBXLSExportDemoXLSExportDemoExcelDocument.vb1633XLSExportDemo
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Aug 23, 2011
I am trying to import a bunch of excel 2003 files all with A:H columns and they are under the same headings etc. into a table in access 2003 database. This is a module in access im making. Im using a file search to look for every file that begins with Format (which they all do ) to get at all the files in the folder path. is there a more efficient way to do this? somehow select all files in a folder? and import each to the same table in access? The DoCmd.TransferSpreadsheet seeems to take each file path individually so I'm not sure how to get each file name in the folder to import it.
I have this at the moment:
Sub Import()
Dim db As Database
Set db = CurrentDb
[Code].....
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Feb 10, 2010
how I can search a folder of csv files to find out if one of the csv files has a particular name in ?I'm currently searching a folder to bring back all csv files using the code below and this is working fine.
[code]...
But now I want to take it a step further and actually search within the files themselves.
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Oct 25, 2010
I decided to to convert my excel macro in a exe file using visual studio 2010. In excel macro method find is present like this:
[Code]...
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Mar 11, 2010
Private Sub LinkClicked(ByVal sender As Object, ByVal e As EventArgs)
Dim link As HtmlElement = WebBrowser1.Document.ActiveElement
Dim url As String = link.GetAttribute("href")
[code]...
Okay so here's the question how do I get the links that open in a new window to open in my main webbrowser control. The above code does some, but it's not fool proof.
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Apr 28, 2011
I saved a file with the extension .doc. I use the RichText to write and save the text. I did not set any encoding type when I saved it. When I tried to open the file in the Richtextbox again, I got all the formatting characters in the RTF file. How do I correct this? How do I open and re-open a .doc file in the Rich Text box control without the formatting showing up in the box with the document contents?
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Nov 9, 2010
I can do this using VBA, but I want to be able to create the code using a compiled VB programme, which can then be opened in Excel.
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May 15, 2012
I have an application that can read certain types of files, and I have it working so that if you do "open with" from windows, it automatically starts the application and opens the selected file.
Unfortnately, I cannot get it to work for more than one file.
System.Environment.GetCommandLineArgs() contrains the following:
System.Environment.GetCommandLineArgs(0) = name and path to the .exe
System.Environment.GetCommandLineArgs(1) = name and path to the first file selected to be opened
System.Environment.GetCommandLineArgs().Length is 2 when the user tries to open 1 file, which makes sense since the first argument is the .exe itself and the 2nd is the path to the file, but it does not increase to 3 if the user tries to open 2 files... meaning that System.Environment.GetCommandLineArgs(2) is never populated Here is some sample code that shows the problem: It will recognize no files or 1 file being opened, but if you try to open multiple it will only show the first.
[Code]...
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May 8, 2012
I 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
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Dec 16, 2010
I working on a VB.NET project to manipulate a VB6 form using COM Interop. Some of the controls on my VB6 form are indexed and some not, so calling ctl.Index fails on those that have no index. Is there a way to work out if a control is indexed?
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May 10, 2010
Using VB to open a .csv file with "excel.workbooks.open", editing it, then saving as .csv.
Even though it is saved as .csv, it is still identified as .xls.
Is there an alternate way to open this .csv file so that when it is saved as .csv the excel application actually identifies it as a comma delimited, not a spreadsheet?
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Nov 20, 2011
I have a windowform and in my form , have a text box & a button.I write a word in textbox then click on button. I want open a pdf file and find and highlight words that I write in textbox.how to open pfd and find & highlight words in it by vb.net?
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Jan 11, 2010
I'm trying to find where this code might be leaving old connections open, and I found this code that might be the cullprit. It is in a function. I'm wondering if this connection would close, if an exception occured from within the USING statement?
[Code]...
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Feb 4, 2009
I am trying to find the last line of an existing Excel file from Vb.net. I figured out how to open the file. The file has contents in its first columns as follows[code]....
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Jul 25, 2009
Trying to use date selected in MonthCalender function to populate next empty row in an Excel worksheet. So far have tried: Private Sub DateSelected(ByVal sender As Object, ByVal e
As System.Windows.Forms.DateRangeEventArgs) Handles MonthCalendar1.DateSelected
[code]...
But none work. How tried looping through a range ("B:B") but it ends up in an open loop. How do you stop it?
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Aug 28, 2010
I am working on an application where I need to locate a range of cells within a worksheet. Since the actual location of the data will vary for each worksheet, I have come to the conclusion that I can put a string near the range that I am looking for (i.e. the text "*SUMMARY*") and since I will know the location of the data that I am looking for relative to the location of this text string, it should work.
I have made some progress but am having trouble getting the Find method of the range component to work. My code is below. This code finds each worksheet and shows me the name but I also need to to find the location of the cell with the string "*SUMMARY*" in it (if it exists).
Imports Microsoft.Office.Interop.Excel
Public Class Form1
Dim oExcelApp As New Microsoft.Office.Interop.Excel.Application
[code]....
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