.net - Checking If A File Is Open
Jun 16, 2012can't see why my coding does not work. The following coding does give me a message if the file is open in notepad, but it doesn't if the file is open in word or excel?
[Code]....
can't see why my coding does not work. The following coding does give me a message if the file is open in notepad, but it doesn't if the file is open in word or excel?
[Code]....
I'm making a Visual Basic GUI application to display whether a number of my ports are open for people to know whether things like my website and my Minecraft server are open.My problem is I have absolutely no idea how to do this in Visual Basic.Basically, I'm asking for something which sends a signal to an IP with a specific port, if it is open then return true, if it's closed, return false. Similar to: http:[url]....
View 1 RepliesI was wondering if it was possible to check if the file "test.txt" is open? and if so then display a message that the file is in use? My biggest problem is that the file can be opened in notepad, word, excel etc. I have some basic coding, which checks if the file is open - what I am trying to do is check if the file is currently open and if its not in use then proceed with the coding, I have the following coding so far.
Dim Process() As Process = System.Diagnostics.Process.GetProcessesByName("notepad")
Dim Process2() As Process = System.Diagnostics.Process.GetProcessesByName("word")
For Each p As Process In Process
[Code].....
In VB6 I had to always check if the port was open or not. But with VB.NET and the new Serial Port control I don't see any.If SerailPort1.Open then statements. In fact when I tried to use the code I got Expression does not produce a value.So does this mean that we no longer have to check to make sure the port closed?Is there a way to check if the port is open or not?
View 1 RepliesIs there any better performance by checking for a true value like this:
[CODE]..............
Than like this:
[CODE]..............
Why would a .sln solution file open and appear empty in Microsoft Visual Basic 2010 Express - i.e. no windows showing projects and code files etc.When I inspect the file in a text editor, it contains references to vbproj files (which are present) which indicate that it should not appear as empty.No error messages are reported when the file is opened.
View 2 RepliesI 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]....
how to use open file dialogs to open a file to a text box?
View 6 RepliesIs there anyway of searching for a file (shortcut file) on the desktop in VB? I've tried :
If My.Computer.FileSystem.FileExists("DesktopMYFILE.lnk")
doesnt return anything
If My.Computer.FileSystem.FileExists("DesktopMYFILE.exe")
doesnt return anything
[Code]...
I am writing a program to play sound effects in a theatre.file system should belike this:Any path on the computerFilenamefilename.xmlAny path on the computerFilenameSounds
View 8 RepliesI am trying to write(what I thought would be a simple piece of code. I was wrong.
What I am trying to do is to get an application to check if a file exists, However, I have it wrong as the file obviously does exists, but when I run the application it tells me it does not.
Imports System.IO
Public Class check
Dim checkfile As New FileInfo("C:\HelloWorld")
[Code].....
I'm testing out the use of shells and I want to know if theres a way to check if the shell is exited.
[Code]...
I have got the following code to check whether a file is open or not as I want to ignore it if it is, but it doesnt seem to be working.
IF IO.File.GetAttributes(f) And IO.FileAttributes.ReadOnly) = IO.FileAttributes.ReadOnly Then
im trying to make code to check if a file with the same name exists twice in the same dir one with .dds and one with .veh file extentions and if they do put in a listbox but if only one exists then it puts it in another listbox i have made code to filter .dds in to one listbox and .veh in another but i dont know how to make the "check" if they are both there
this is the code i have to split them at the mo
For Each files In dir
Dim path() As String = files.Split("\")
Dim chunk As Integer = path.Length
[Code]....
but i wanted the Else for the .dds files that dont have the matching .veh file
I would like to make a simple application that allows to make a file or if it already exists displays a error. This is the code a use. But the problem here is that it does not always shows the error. Code:
View 2 RepliesI've noticed that when you click on a web page in Windows Explorer, or open a file in general, and the default application to open it is internet explorer, ie opens and opens the file. However, when I tried this on my Web Browser it opened, but ignored the file and went on its usual routine. How can I get my Web Browser to open and open the file that was clicked on in explorer?
View 1 RepliesI 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?
View 4 Repliesim having a slight problem with my open file dialogue box, i need to be able to open the dialgue box, and click the file and open in my pdf reader, or at least load it to my other form ive created. what ive go so far:
[Code]....
I know all about File.Exists in VB. I know that it should work, but in my situation, it is not. Currently our site builds an image string based on the user id, then goes to our image folder on the server and retrieves it. If the image doesn't exist, it displays the broken image icon. I tried implementing the File.Exists method using the path and image name it was already using to pull the file. Even if the file exists, if returns false. I have read other posts saying that it could be a security issue, but it seems to me that if it can pull the image, it should be able to check and see if it exists. [Code]
View 1 Replieshow to let VB check if a file exist on the server with the name provided before uploading that file.show a message and restart the application without uploading if a file exist with that name.
View 16 RepliesI haven't used System.IO before, and I'm a little stuck.I need to check if a file exists, for example C:Documents and SettingsverraineDesktopSURNAME Firstname v1.docx, if this file exists the filename has to become v2, and so on. Usually there will only be a v1, but in the case that a clients position changes we have to be able to save the new version without overwriting the old one.
How would I be able to do this efficiently? I'm uncertain to say the least. Because, if I manage to find out how to save the file as a different number, that's alright, but if that next number exists as well? I can only think of ways to do this that require a lot of code.
If I was to upload one or more file(s) to a server, is there anyway to check that / those file(s) against the file(s) stored on my computer without downloading the file(s) to check against the original file(s)using VB.Net?This would need to be done in a recursive fashion from a parent folder downwards, the folder being of the end-users choosing.
View 6 RepliesTo find version of an exe, I use this code
Dim FileProperties As FileVersionInfo = FileVersionInfo.GetVersionInfo(Application.ExecutablePath)
Textbox1.Text = FileProperties.FileVersion
How come we find a version of an exe that's uploaded in FTP? I need the version of an exe that's already there in FTP. I know the path where the exe file is saved in FTP.
i face a problem in checking file condition.I wish to create a program that can check the condition file continuously while the program is running.[code]If I suddenly remove the file, it cant show a message File not Exist or if I suddenly receive a file and place at the folder,it cant show me a message File already Exist.How can I modify my code to continuously checking the file condition while the program is running.
View 1 RepliesI like to open a file. The open option should be shown in a separate window. My code works fine but the open window is not displaying to open a file. Here is the code:
private void OpenMyFile()
{
string path = GetPath() + ViewState["fileopen"];
[Code]....
I'm trying to download files using the Net.WebClient call to DownloadFile
Using client As New Net.WebClient()
[code...]
Is there a polite way I can ask for the file instead of calling DownloadFile, and handling the exception ?
I get an UnautorizedAccessException running this code:
string[] fileList = Directory.GetFiles(strDir, strExt);
The exception occurs in c:usersusernameappdata How can I check if I have access permission (to list and read files) ?
how can i check if the file exist in the absolute path. for example i have images in the absolute path from which i have to check if the image exits I can do it from FILE.EXIST(path)this method is not working for absolute path, even if the file exits its is showing the file doesnt exist.
View 3 RepliesI have a datagridview with a bunch of columns, one of them being an Image type (DataGridViewImageColumn).What I want to do is basically check to see what the file path of the image in one of those cells is.
I've tried doing like:
If (DataGridView1.Item(7, Number).Value.ToString = "some path" then
'do stuff here
End if
but it always says DataGridView1.Item(7, Number).Value.ToString is just "System.Drawing.Bitmap", instead of the actual file path of the image in the cell.I've also tried the above, without the .ToString, but I get an error saying System.ArgumentException was unhandled (Argument 'Prompt' cannot be converted to type 'String'.)
I have been on MSDN about this and searched but it's not quite telling me what I'm after. I've extracted a list of file names from an Excel spreadsheet and want to check whether they all exist in a directory which a user can select in a text box. It feels like I'm nearly there with it but currently my listbox is displaying everything, I want it to just show the files that are missing. I'm a beginner so I'm not exactly sure if I'm even telling it to compare the two things properly, I've tried a couple of ways of checking if a file exists but neither seem to work.[code]
View 1 Replies