Checking For File Existance Via An ASP / VB Website
Nov 5, 2010
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]
I have this code for checking if 1 file exists (binPath is already declared):
Dim filename1 As String = "OpenSim.Grid.UserServer.exe" Dim U As Boolean = System.IO.File.Exists(binPath + filename1) If U = False Then[code]....
However, I need to check if another five files exist too. Should I just copy the above code another 5 times, or is there a more efficient way of doing it?
I need my problem to check if internet explorer 8 is running a website.I'll be more specific. When internet explorer 8 navigates to [URL], an event should be triggered, like pressing a button.The "If" statement is ofcorse needed.
I am trying to create a small application that will tell me if a website is up and running. This application will monitor if the site goes down. The problem is that there are several websites sharing the same IP address, and I cannot use ping to monitor it for the same reason. I do not know what type of code can I use to query the availability of the website. I read about webRequest and webResponse but I do not know how to get the response information that will tell me if the site is up or down. The code should be able to tell if a site like "mundo.reporters.com is accessible. That is the only thing.information to point to a potential solution will be more than welcomed.
The server is hosting 8 websites that share the same ip address, and I need to constantly monitor if they are functional.
Well I know this could work for a browser with no tabs:
Private Sub WebBrowser1_DocumentCompleted(ByVal sender As System.Object, ByVal e As System.Windows.Forms.WebBrowserDocumentCompletedEventArgs) Handles WebBrowser1.DocumentCompleted End Sub But the thing is, I do have a tabbed browser. I tried this code, But it didn't work.
I have created a class in a vb 2008 project let say project_1 and class_1
I create a second project project_2.
In project_2 I want to use the class_1 I already create in project_1, so I press on add existing item and I add class_1 to project_2. (so far so good)
I double click on class_1 from proeject_2 and make some changes on it and I save the changes, when I double click on the class_1 from project_1 I discover that the it has the old state and the changes I made is not there, I know later that when I press on add existing item, it take a copy of the class and create a new file in the project directory.
I can add a folder in the setup/deployment project and it gets added when my project is installed. when I do it by writing code, I get a message "access is denied", but the programme will continue to work. I eventually worked out that I had to right click the exe file (in programfiles) and run as administrator so that the directory is created (as the form loads).
Is 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
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?
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
I 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")
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:
how 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.
I 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.
To 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.
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.
I 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]
With all the smarts of actually loading images being done by the .net framework, seems like I shouldn't have to repeat it all in my code by checking for magic numbers, or using a hack like this:[code]Am I missing something obvious, like System.Drawing.IsImage(stream)?
I would like to know if there is any opportunity in VB.Net to use atomic operations. Or Maybe there is an opportunity to check if a file is allready in use or opened.The reason why I ask is because I got a little application that I would like to log its actions. As the applications uses threads the method for writing the log file sometimes is trying to open the log-file more than once which leads to an exception.
