VS 2005 Open Existing Xls File If It Exists?
Mar 30, 2011
In my scheduling app I am exporting information to an excel file. When the first export runs it opens a new instance of an excel workbook. I have decided to save each schedule (AMRN, PMRN, AMTech, PMTech etc) to separate works sheets instead of appending the first worksheet. This way when the shedules need to be printed the whole workbook can be selected to print. When I try to open the existing workbook if it exist I get an error. Here is what I am trying to do.
vb.net
Dim xlApp As excel.Application
Dim xlWorkBook As excel.Workbook
Dim xlWorkSheet As excel.Worksheet
[Code].....
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Jan 9, 2009
I am trying to use the open file dialog box in VB 2005 to open up an existing txt, or rtf file from a directory into a rich text box. I am able to get the Open file dialog to appear and the directories, but when I try to open the file it doesnt import it into the text box. Here is the code I am using
[Code]...
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Jun 30, 2011
I want to open an existing VB class file, add a few properties and close it again.
Simple enough, I thought: Take the CodeDom, a VBCodeProvider, parse the code (using the Parse-method), then identify the location where I want my stuff added (doubtless using some nifty LINQ expressions), add a bit of code and then have it generated and here we go.
Now I see that Microsoft apparently added the Parse method only for the fun of it but never implemented it.
What's the story here? Can I only generate code from scratch? Is it not possible to load existing code?
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Feb 3, 2011
I want to use my word add in to open an existing file, the code is:
currentDoc = app.Documents.Open(currentFile)
where currentFile is a string containing the path to the file I want to open, when ever this code runs, there are no errors, but I also cannot see the document
edit: the program first closes the 'currentFile', adds something to the package, then tries to open it again with the line above, when it closes the document the word application stays open with no document in it, but when it opens it again it is not seen in the application, but the document is open
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Mar 17, 2009
I have a program that runs some data manipulation on a file when it is double-clicked and then displays this to the user.However, when I double click on the same file type of a different file it opens in a separate instance of my program instead of the same instance already running, i.e. some message that says would you like to reload file, YesNo, and then given the answer perform the action required.I have found some code to stop a second instance from opening, but this is inconvienient for the user to close out of the program everytime they want to view a new file.[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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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 2, 2009
I have a text box in which a file path is displayed. A button to click and open the file. Code executes properly but the file doesn't open. [Code]
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Oct 20, 2010
In the developing environment the computers do not have com ports, but I am working on a project for a client who does. It is annoying that when I test the program on my computers I always get the error. "The port (COM1) does not exist"
I am catching the general exeption but the debugger stops there anyway. I can press "continue" and the program resumes but I would like to clean that up and not try to open the port if the computer does not have one.
vb.net
Try
SerialPort1.Open()
[Code].....
lblNoCOM1 just tells the user that there is no serial port and that the barcode scanner is not working.
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Jun 4, 2010
On my computer I've VB.net 2005. and also office 2007. I try to open an excel file like that
Imports Excel = Microsoft.Office.Interop.Excel
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, _
ByVal e As System.EventArgs) Handles Button1.Click
[Code].....
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Mar 19, 2009
How can i open chm file in VB.net 2005 ?
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Jan 20, 2012
How to open Executable File in VB.Net 2005
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Mar 18, 2009
would like to know if it is possible to have my application launch and open a file which will be called todays date. its just a simple text file and i am basing it on the streamreader style function.
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Jan 22, 2009
The following code works to check if a file exist, but I need to also check if the file is open.How would I do that?
If System.IO.File.Exists(Application.StartupPath & "players.txt") = False Or System.IO.File.Exists(Application.StartupPath & "preferences.txt") = False Then
bla bla bla
End if
When the main program is doing it's routine, it is looking at, and using, data from the two files.So, when the user pauses the program by opening the control panel, one or both of the files may still be opened. When the control panel tries to open them, it causes an error.(I am guessing that to just tell it to close them will cause the same problem if they are already closed.)
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Aug 5, 2011
I 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]...
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Mar 11, 2010
At home I use Visual Studio 2008 Pro but a class of mine is trying to have us use Visual basic 2005 express edition. Since we need to submit source code files will there be a problem if I just submit the .vb file instead of the whole solution?
[Code]...
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Oct 2, 2009
I'm looping through a csv file. For each line, I'm reading certain values, generating a filename, and writing the record to that file. Here is some logic
If <something that doesn't matter happens> Thendo somethingElseIf File.Exists(strOutFile & (strOutputFileName & "__" & strPrefixFileName & ".txt")) Then
strFullFileName = strOutputFileName & "__" & strPrefixFileName & ".txt" '** Double Underscores after app name
tsOutfile = New StreamWriter(strOutFile & strFullFileName)
[Code] .....
Now, obviously with the above code, there's no reason for the elseif, since they both do the same thing. The problem, however, is if I need to create a new file and write to it, everything works fine. In fact, everything will work perfectly until I need to write to a file that I already created. If I go ahead and just try "tsOutfile = New StreamWriter(strOutFile & strFullFileName)" and point it to the already existing file, I get a permission error (says the file is already open). Is streamwriter keeping an open connection to all of these files that I create? Nothing else in the program is touching these files, only streamwriter.
Here's a quick example to illustrate what is happening
Record 1 goes to file A
Record 2 goes to file A
Record 3 goes to file A
Record 4 goes to file B
Record 5 goes to file B
Record 6 goes to file B
Record 7 goes to file C
Record 8 goes to file A (Error will occur here)
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Dec 17, 2009
I m developing an application, where I would like the user to open an existing excel file inside the Application itself (Form)
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Sep 4, 2009
I'm trying to open open an excel workbook thats going to be used as a template that i'm going to paste raw data in. It comes up with as an error saying that the file is missing, but its not. The path and file name are correct. So I'm curious if its something else or what.[code]...
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May 15, 2010
I am trying to open an excel file and write to it as data becomes availableI can create an instance of excel and write to the selected worksheet once. But, I can't seem to write back to the existing file. I keep on getting a null reference error when I try to send new data to the file.The function I am using will run once, but when it returns to the main form, I lose the values of xlApp and xlWorksheet. It appears that going in to the function makes the original values null.
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Oct 21, 2011
I am using TextFieldParser to read a .txt file and create a DataTable I then filter the table and create 4 new tables I then bind those tables to BindingSources Then Bind ComboBoxs to the BindingSource Then bind TextBoxes to BindingSource I like the user to be able to Open a new file without having to close the program So upon opening a new file I have a sub routine that clears the tables the rows and the columns of each table as well the DataBindings to each control The problem is once I do the Text Binding as such
Me.list1_MLStxt.DataBindings.Add("Text", Subject_Values.BindingSource1, Form10.mls_txt.Text)
Then when I open a new file I get an error message conversion from string"""" to type double is not valid.If I never perform the binding I can open and reopen different files without a problem. So this is causing me to think that the problem is with the way I am clear something? But I am obviously not sureIs there something I am missing to clear everything properly in order to open and read and bind a new file?
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Mar 13, 2012
I need to make an E-Search engine for collage library , i can make it by using streamReader and streamWriter , but unfortunately i have to use Binary to make this project ... i've to many fields to put it on DAT file , and i've to use SPLIT to split lines and make arrays ..
what is the best way to do that ? how can i write an opened binary file on textbox and convert text to array ?
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Feb 22, 2009
I will do a program then save it and close it out but when I go back to open it it won't open. It just sits there. I'll click on Recent Projects and they won't open. I'll click on Open Project and select a existing file and it will just put it in Recent Projects but won't open it up.
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Sep 30, 2005
Using the new Visual Basic 2005 Express Edition Beta.Created a project, form, controls, etc. Worked great. Love it, compiled perfectly.Saved everything, closed the program, went to bed. Woke up, opened the project, but now CAN NOT open the form (form1.vb) in Designer mode!! I can open the code, it's all there, exactly as I left it, but cannot get back to the designer mode to (easily) add more controls to it!F7 just opens the code, right-click just gives me code option, not designer option.This is amazingly frustrating..
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Jun 23, 2010
I created primary/start up Form for my VB2005 app (called Admin.vb). Now when I go back to the solution explorer, I can see Admin.vb but it doesn't have the form icon and clicking it doesn't open the form. Instead it opens the code.All of my other forms are fine and have the right icons and open in the [Design] view ...The form obviously still exists as it opens in runtime but I can't seem to open the design view for it.
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Apr 21, 2009
Suppose I have this Dim proc As Process proc = Process.Start("Notepad.exe", "C: est.txt") Now, if I want to use Notepad.exe to open another text file (ie. C:2ndTextFile.txt) without closing it, how am I going to do it?
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Jan 17, 2009
I'm trying to write a program that will open a solidworks file in EDrawings and print it and so far the only way I can find to do that with an edrawings ActiveX Control displayed on my form.Does anyone know if it's possible to print drawings via EDrawings 2009 without the ActiveX Control having to be displayed on the form as that is drastically slowing down my program?
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Dec 5, 2009
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.
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Mar 16, 2009
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?
[Code]...
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Dec 2, 2009
I think this is a really simple question to answer but I can't find a better solution. Basically I am importing data from an external source and as I go through importing each for I am doing a for loop to see if the row already exists; this is taking a life time and I feel it is a very simple way of doing it. Is there a better way to see if a row already exists using specific columns and key indexes?
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