Checking If A Filename Exist In A Folder?
May 12, 2010
I'm a beginner in VB Express 2008 code. I would like to write a small program that only has a "Textbox" and a "Button" in VB Form..I would like a code that can check if a filename already exist in a folder.Let's say I have a folder that has all this filenames (eg. test.doc, eddy.doc, anything.doc)So if I entered 'eddy' in the "Textbox", and if I press the "Button", I would like the code to check whether 'eddy' is already exist in that folder.......
Same thing if I entered 'anything' in the "Textbox", and if I press the "Button", I would like the code to check whether 'anything' is already exist in that folder.
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Jun 4, 2011
My tables are PURCHASE and SALES...In PURCHASE table, fields are CODE(primary key), PRICE, DATE, TOTAL, QTY...when I'm entering datas in form and when i click submit, the datas stored... but when i enter same DATA(CODE), it is showing error...i don't want to show the DEFAULT ERROR message...so, i want to search whether the CODE is already in database or not...i.e When i click SUBMIT button, 1st it has to search whether the CODE is already PRESENT in table or not. if it is not there, DATAS have to be stored. otherwise, it has to DISPLAY MESSAGE BOX.
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May 17, 2010
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.
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Mar 4, 2009
How to check if network adaptor is existing in pc or is not exist? (VB.NET sample)
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Mar 14, 2012
I have a program Which can get the frame's content, but if it is iframe I got error, normal frame with no problem, I need to detect the frame is iframe or normal frame.... but fail...
If WebBrowser1.Document IsNot Nothing Then
Dim element = WebBrowser1.Document.GetElementByTagName("iframe")
If element IsNot Nothing Then
checkiframe = True
[Code] .....
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Jun 15, 2011
I have an application that has a list of string that needs to be search in a database table field to select rows with the same name and retrive the values of one particular fields that contains the file name with extention for that string. With this new generated text file, I pass the filename with the extension and search the folders that are listed in a txt file. All of this works fine.
Now I need a more simple version of this application, without using the database to get the filename with extension. Instead, read the text file with input strings, search in the folders listed in another text file(to know the location of the folders to search for the string). If any file that matches with the string in the text file, I need to copy those files to another folder.
[Code]...
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Apr 30, 2010
I have a routine which run's on a form load event which works perfectly fine.i am using vb.net.
Now i want the routine to run only when the files (".txt") exists in a folder.I need the program to keep watching the folder and execute when it finds any files in it else sleep & then check to see if it has any new files
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Apr 16, 2010
I have a log txt file that is updated once my application is closed. I want this file to be copied in the same folder with a new filename as follows:
[Code]...
Here is my code so far - not sure why its not working
[Code]...
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Jul 26, 2011
I have backup folder where I store the images while loading them.So I need to delete the image from the backup folder when deleted from the checked listbox.[code]...
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Dec 8, 2011
I am trying to add a registry key in to the file "MyApp" which doesn't yet exist in the registry key directory, when I try and write this key however I get an error from the debug console telling me the "NullReference was unhanded". If I go and manually make this folder it works brilliantly, I thought that this code would make the folder as well?
[Code]...
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Jun 30, 2011
I have a console application. I get the console application's folder path via this code:
dim Folder as string Folder = System.IO.Path.GetDirectoryName(System.Reflection.Assembly.GetExecutingAssembly.Location)
And I need to create a new file with this name Key.txt in the same folder as the console application. Because this file name is rather normal and there is possible duplicate in that folder. How do I prevent duplicate file name while still using simple name for that file?
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Aug 3, 2011
I have to copy some files (about a total of 100mb) to a network drive for instance And before copying I want to check the disk quota on that folder. How do I do this?
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Jan 22, 2010
I want to check if an Outlook folder exists, if it doesn't then create it & if it does then carry on with other code. I can create the folder as a sub folder of the Inbox but once it is created I get an error because it is still looking to create when it's already created. I have tried to capture the error but still no joy.
[Code]...
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Aug 11, 2010
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) ?
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Jul 23, 2009
I want a code that checks if there are any files in a Folder. So I want to specify the folder name.
This is what it should do:
It Checks if there are any files in the folder (Data)
If there are no files in folder:
Form2.Show()
If there are files in the folder:
MsgBox ("Welcome", MsgBoxStyle.OkOnly, "Welcome")
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Jul 1, 2009
Quick query...I'm trying to scan a long string and return any values that occur between the tags <FileName> and </FileName> I've got a bit of code here to use regular expressions to return the position of the occurunces of both substrings..Just wanted to find out if there is any way to scan for both substrings within one loop (as im currently doing 2, one for the first substring and one for the 2nd) so I can use something along these lines:
ringlist = Mid(XMLRESP, (startloc + 1), (endloc - 1))
MsgBox(ringlist)
to msg box the value between the substrings...either that or another approach to return the value between the 2 substrings (it can be of variable length)
Dim patternstart As String = "<FileName>"
Dim patternend As String = "</FileName>"
Dim matchesstart As MatchCollection = Regex.Matches(XMLRESP, patternstart)
[code].....
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Oct 17, 2010
How would I do that? Sample code is below that demonstrated that the file I opened contained the full path and file name.
I want to extract just the path and serialize that to the user.config file as a UserSetting value. Then next time the user opens the dialog box, it uses that saved path string to go immediately to the location previously used.
If openFileDialog1.ShowDialog() = DialogResult.OK Then
Properties.Settings.Default.persistConnectionType = openFileDialog1.FileName
Properties.Settings.Default.Save();
[Code].....
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Dec 21, 2010
I try to find online any example for create an application autoupdate.
When I run my application it check in a webserver if exist new version,if exist the software run update.
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May 27, 2009
I have a Listview on my form with different files. I can selet a file en open it with the proces start method. To open the file i use the OpenFileDialog method and select the filename. This work very good. With the code below.
My question is if there is a method to get the selected file without using the OpenFileDialog Box. So when i dubbelclick the selected file the proces will start with open the selected file. Something like:
proc.StartInfo.FileName = Me.SelectedCell.FileName
instead of proc.StartInfo.FileName = Me.OpenFileDialog1.FileName
PS) May be i can preduce the Filename using the OpenFileDialog method on the background.
Private Sub ListView1_MouseDoubleClick(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles ListView1.MouseDoubleClick
If Me.OpenFileDialog1.ShowDialog() = Windows.Forms.DialogResult.OK Then
[Code]....
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Jun 26, 2009
how do you transform an address like "file:///d:filename.ext" in "d:filename.ext"
without dirty string manipulation??
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Nov 25, 2010
namespace of "system.runtime.caching" does not exist but in object explorer and microsof exist.i use microsoft visual studio 2010 and .net framework 4.0.i also cant use this name space(System.IO.MemoryMappedFiles & System.Runtime.Caching.MemoryCache)
any body know what is the problem. i want my program after doing something (opening a file or any thing that can do something my program use more memory.)use memory like startup run.
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Jan 16, 2011
Here's my code:
Option Infer Off
Option Explicit On
Option Strict On
Public Class Form1
Public Sub NewToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles NewToolStripMenuItem.Click
[Code]...
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Sep 16, 2009
I have Requests for VB(2005) very very important for my selly project!i need a button that determine if file exist and if that file exist then show a messagebox!and if not show messagebox!.
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Apr 23, 2012
I want a Code to check Database exist in SQL and Message Box Show Database Exist Yes/NO?
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Aug 4, 2010
Is there any better performance by checking for a true value like this:
[CODE]..............
Than like this:
[CODE]..............
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Dec 19, 2011
i want to set a link in VB.net dynamically to a file. My url looks like that:
[Code]...
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Oct 17, 2009
i use this:
Try
' Create an instance of StreamReader to read from a file.
Using sr As StreamReader = New StreamReader("musik.txt")
Dim line As String
[code]....
In the line line = sr.ReadLine I dont want the full path Maybe i have c:lalalalamin.mp3 And i just want to show min.mp3?
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Aug 8, 2009
I'm trying to figure out how to get the file name of the application at run time, in case it gets renamed.Also, as a easter-egg. First post, I don't know what code to put but this is how I am so far, the {FN} is where I need the file name.
If({FN} = "easter.exe") Then
msgbox("You found a easteregg! :O")
end
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Aug 14, 2010
I often use things like the crosshatch in filenames to group them together. Until recently this has not been a problem.
I am working modifing a WPF app which uses a Listbox to store images. I need the full path of the image to feed to a class to retrieve metadata.
The test image is named "# Canon-ixus.jpg".
Using Listbox.SelectedValue to return the filename I get "%23 Canon-ixus.jpg". There are not a whole lot of options to returning the name of the selected item from the Listbox.
Is there any simple way to get the name back to its original form?
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May 13, 2009
I am using Visual Studio 2008 Setup project. I need to copy one folder and the sub folders into the program files but when I tried to copy or add the folder to "Application Folder" in File System editor, I am able to add only files and not folders.
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