C# - Open A Read Only File As Non Read Only And Save/overwrite?
Sep 21, 2011
I 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)
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Jan 24, 2012
I would like to know how to convince the SaveFileDialog to overwrite a read only file. Currently, it is throwing up a dialog and not even getting to my FileOk method.
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Oct 20, 2010
I'd like to open a text file and not allow any other processes to write to it. I understand I can do this with the following FileStream:Dim fs As New FileStream(_FilePath, FileMode.Open, FileAccess.ReadWrite, FileShare.Read)
Once I have access like this I need to read all of the lines (I will use a StreamReader(fs)) and then I will need to write to the file (I will use a StreamWriter(fs)).
The problem here is that the StreamWriter won't allow me to set the append mode to false (so I can overwrite all text in the file) when I use the filestream as a parameter instead of the file path. So all text written with the StreamWriter is appended onto the text which I don't want. If I use a StreamWriter with the file path (which will let me set append to false) as the parameter instead of the filestream it will be locked out because of the FileStream FileShare. How can I still have exclusive access to read and write to the file but still be able to overwrite the existing text (append mode false)?
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Feb 6, 2010
i have this simple code for reading image from file
pic = Application.StartupPath & "\medlem" & "\" & txtp.Text & ".jpg"
Dim myimage As New Bitmap(pic)
Try
[Code]....
the new image comes from the computers web camera.
the only thing i cant get to work is how to overwrite the file.
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May 10, 2011
From what I can tell this isn't possible with CopyDirectory.Is there a simple way to copy a directory and overwrite everything, or do I have to have it first check each directory for read-only files and then change their Read-Only attribute?
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Jun 6, 2011
I 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?
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Mar 16, 2012
My question is a rather simple one and to be honest with you, I am not sure if it can be done. Lets say I have a mutli-line text box, is it possible, and if so how would I go about making it so if I clicked Open with > editor I could do things with this text, such as TextBox.text = [file contents]. If it's not possible just let me know and I'll stick with open file dialogs.
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Mar 16, 2010
I have a form to calculate some settings. It works just fine. I will input some decimal numbers to 8 deferent Textboxes. For example I input 40.0098 to textbox1. When I press a button my form will calculate these setting, and it will generate some new values. What I want to do is save the user inputs and the generated values to a text file each input or value has its own line it should by after the name of that input or value so the user could read the info contain in this text file, so per say line 1 of this text file will represent the input of textbox 1. it should save it as "parameter 1 = 40.0098" to line 1 of the text file I also want to be able to load this text file to my form (only specific lines) when I press another button I should get a dialog box to be able to select the text file, once I do that my form should read line one and only the input what after the "=" so textbox1 should now show 40.0098 only.
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Jan 11, 2011
i need to read binary file and in this file found the string and replace it with other one and save the file afterwords. I found many example to read binary, but to find and replace is for me mistery.
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May 4, 2012
I 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]...
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Oct 12, 2009
I am trying to create a form that opens a text file and displays the text in the textbox on my form. I am supposed to use a function to get the string of text from the file. Then I am supposed be able to click a button to call on the function. I have to use the OpenFileDialog to get the file and the path of the file can be anything (it is not a certain file). I am having a lot of trouble figuring out how to get this to work. I have tried coding it and this is what I have come up with:
Public Class Form_BaseClass
Function ReadFile() As String
Dim OpenFileDialog As New OpenFileDialog
[code].....
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Jun 1, 2011
In Visual Studio, how can I open a source file (from another project) in read-only mode? I want to copy some code from it, but I don't want to modify it by mistake.I don't want to change the file's attributes to read-only, as I will not be able to work on it later, unless I clear read-only.
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Mar 11, 2010
I have a txt file that I need to read into a listview, but I need to read from a specific line in that file. Below is a sample of the txt file to read,
6400,3200,2,95.5,84,76.6,0
1,2,-20,15,0,0,0,"NO",0,0
TOTAL GPM= 6400 HWT= 95.5 CWT= 84.0 IWBT= 76.6 ALTITUDE= 0
CODE]...
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Oct 16, 2009
[URL]... Regarding this question i got some suggestions, but how to implement is confusion. Can any one help to implement so that the problem can solve.
[Code]...
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Oct 24, 2011
I want to save some data to a binary file, and read it later, as in several strings of data.
My objective:
To save the following things...
1. 3 different strings of data, and be able to easily read them later.
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Jan 22, 2010
Im making a program that can make diffrent profiles. So it have to save: Username, Password, etc. then be able to read it.But I have no clue how to read diffrent lines, and stuff.I was thinking if ex. the pass was like this:<Pass>Pass here</Pass>I can read what was between those things, but I coulnt get it to work ...
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Jun 14, 2009
I've gone through about 16 hours and two packs of cigarettes trying to figure this out. First a little background. I was using 6.0 up until 2004 when I went to prison. I'm out now, and trying to relearn the trade, using VS 2005. I'm currently porting some 6.0 code from another project, SpyCast Webcam Studio, into VB 8.0. It's disheartening, to say the least. None of the old built-in subs/functions work anymore, so I have to scour the forums to relearn each and every function.The section I'm doing now takes a snapshot from the webcam (Video API --> PictureBox --> Save as Jpeg), then upens the file to upload it to the server via HTTP POST. I've been using this code in SpyCast for years with no trouble, but I spent many hours trying to piece together the right code to open the binary file to read its contents. I pieced together two methods I found around the forums, one using FileStream() though the code I found wasn't for binary files, even though it said it was, so that code doesn't really work. Method two uses Microsoft.VisualBasic.FileOpen() and works better.
Here's the kicker. By the time I run through the rest of the rigamarole of uploading the file, by the time I read it on the webserver, it's *slightly* corrupted. It's a valid Jpeg, no errors, but the picture looks like when I use to watch the Playboy Channel when I was a kid scrambled with weird colors and whatnot. [code] Each "chunk" is basically one "line" of the file. It looks like a single LineInput() return is the text between two carriage returns. Am I correct? I tested this with a flat text file, and it looks true. However, That one input line returns the text or data with the carriage returns *stripped*! ***?!? =( Fine, I have no problem adding my own vbCrLf to each LineInput(), if I were opening text. but this's binary. A character could be Chr(10) or Chr(13), both of which are removed from the original file contents.So I could very well need to use something other than LineInput(), but I haven't found any other examples on the web using this method.
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Oct 7, 2009
I a very large text document, I need to read some lines and at the end of each line, insert a text from the header of each page to he preceding lines.I have the following code the reads the file and displays it on a list box.Public Class Dialogs..[code]
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Sep 18, 2009
Ive figured out how to open a file to read and then display it, and i can probably work out how to write a string to a file. The part i am stumped by is this. Say i open a text file with the following text I has a badger i then want to correct this to I have a badger.
Its just an example and not for a grammar corection program. What i want to do is detect what was said and alter it acordingly. I presume this would come under string manipulation but i cant find any details on this.
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Sep 23, 2009
How 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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May 1, 2009
I'm trying to read and learn the save file dialog coding.[url]....
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May 4, 2009
How can i make a program that will read a text file (.txt) and save each seperate line as a variable? e.g.
Text File:
Hello
My
[code].....
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Oct 24, 2009
I have created a program that saves the co-ordinates of the users mouse and saves it to a text file to be used as an auto clicker.
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Dec 15, 2009
I'm using vb.net 1.1 to develop the program. I got text files that contain test result from a machine, like below.
T1 1.24535 2.56335 2.43253 1.24538 2.55619 4.35243
T2 1.42542 1.63728 3.57295 4.59275 1.57320 2.72057
T3 5.12857 2.45375 6.38593 2.58375 3.57259 3.57204
I need to check the test result with the data from database, to find out which test result is failed. If there is a fail test result, I will show an alert to the operator and stop the checking process. Until the operator close the alert, then the checking process will continue from the last read point.
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Jun 13, 2010
Before I start, I'm not 100% sure this is the right place to ask. Okey, so I'm making my own Notepad, which will contain newer features. (Private use only though) One of them being tab control.
Now I want the program to be in the "Open With..." menus for all files, so I can choose myself.
And if the program is already running when user opens a new file, I want the text to appear in a new tab, instead of a new window of the program.
I tryed to be straight forward, and keep it short. So if you need more info, fell free to ask.
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Nov 18, 2011
I am using Visual Basic 2010 Express and attempting to get information on how to Open, Close, Read and Write a disk file in Windows using VB. I have attempted to use help on the home page of Visual Basic 2010 Express with no results. It does not give me any instruction or sample.
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Feb 24, 2010
This time, basically, i'm working with Random Access Files.I have this et of code to read data from a form a save it into a .dat file. This works fine.
Public Class frmDramaClub
Structure MemberRecord
Dim ID As Integer[code].....
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May 26, 2012
what I'm trying to do is read a text file and convert column2 in to lowercase and save it again.
But I get Value of type 'Integer' cannot be converted to 'System.Globalization.CultureInfo'. after .ToLower?
Dim Convertcolumn = From line In System.IO.File.ReadLines("Path")
Select line.Split(" "c)(1) & line.ToLower(1)
[Code].....
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Dec 6, 2010
How do I read all the text from a text file and save it as a string variable? For some reason I remembered it being something like this: IO.FromFile.ReadAllText("path") but thats not it.
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Feb 25, 2010
I have created 2 format types(ELEMENT, ATTRIBUTE) of XML File.To open and read the ELEMENT Format type and write the row into TEXT string for display is fine but the ATTRIBUTE is not working.The problem is how to identify the format type at runtime in order to develop the script.The scripts below works on ELEMENT format and not on ATTRIBUTE type..How to identify the Format type? [code]
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