So I have a program that allows the user to load up some images, which appear in a ListBox. You can click the imported images and they load into a PictureBox. [code]The path is not of a legal form.You can load up the code and see for yourself. Now I need to be able to delete these images from the ListBox. The exception occurs because the image is now null, and can't load.
View 6 Replies
I have been working on software that finds a specific backup file type and lists it in a list box. Then the user selects the files he/she wants to delete. Then clicks the delete button to remove the files.I have everything finished and working excpet for deleting the actual file. I figured out the code to delete the actual list item... but I cannot figure out how to get the selected file to be deleted within its directory as well... been at it for 4 hours now.
View 4 Repliesmy code
For i = ListBox1.Items.Count - 1 To 0 Step -1
If ListBox1.SelectedIndex = True Then
ListBox1.Items.RemoveAt(i)
[code]......
It is possibe to add a word to a listbox at runtime using an inputbox. Is there a way to delete a word from the list in a listbox at runtime?
View 2 RepliesI've been working on a little sidebar project for fun about a casino. It may have a couple of card games like, war and eventually 5 card draw. I haven't begun any card programming yet because I'm on a screen that shows players.
View 2 RepliesI have a form with a listbox bound to a tableadapter. Users can select from a combox, that has a list of users in it, then click "Add" to add it to the listbox and remove to remove it. This part works fine. The problem comes when updating the database:
[Code]...
What im trying to do is display my details in a listbox then the one that is selected frm the listbox is displayed in the textboxes and when delete button is clicked it is flagged at deleted??? This is what should happen!!:@
I kow there is definitely a problem with this piece of code im setting the index and length to constant numbers so if a different name is clicked it does not work!! is there another way to set this to allow for any length or index position??
CustomerIDTextBox.Text = DisplayCustomersListBox.Text.Substring(0, 4)
SurnameTextBox.Text = DisplayCustomersListBox.Text.Substring(5, 7)
ForenameTextBox.Text = DisplayCustomersListBox.Text.Substring(12, 10)
[Code].....
My knowledge of VB.net is limited (only have been reading from the book)
so what i need to do for my project is to populate a listbox with files from a certain directory (C:folder)
then once it's populated, i can select an item and it will open up in a rich text box.
This is what i have so far for the active directory > list box:
Dim di As New IO.DirectoryInfo("C:Documents and SettingsuserDesktopfolder")
Dim diar1 As IO.FileInfo() = di.GetFiles()
Dim dra As IO.FileInfo
[Code]....
I'm writing a email program and i need to make it so that when I delete a item from a listbox it also deletes from a text file. Right now all it does is delete it from the listbox and when the program is reloaded its still there.
Dim arrEmailSelect As New List(Of Integer)
Dim fileContents As String
Dim thisEmail As New email
[Code]....
I'm trying to delete an item from a listbox so that it wouldn't appear when i run the program again. Is there anyway you could do this.
View 14 Repliesbasically i had this problem before which i fixed with this code!
'REMOVE TIME
If ListBox1.SelectedIndex <> -1 Then
Dim Box As MsgBoxResult = MsgBox("Are you sure you want to remove this time?", MsgBoxStyle.YesNo)
[Code]....
It worked perfectly, all ive done to my code since is change the way the listboc is loaded / saved, it now comes from a .txt in My Documents rather than the C drive.
It now only deleted the top value of the group selected int he listbox and not all of them as it did before.
I have seen questions like What is the best way to empty a directory?
But i need to know,
what is the fastest way of deleting all the files found within the directory, except any .zip files found.
Smells like linq here... or what?
UPDATE: By saying fastest way, i mean the Fastest execution time.
vb 2008 on Vista: I have a folder called "Documents", and another called "PastDocuments". When the user deletes a client, I copy the contents of Documents into the Past Documents folder. Next, I need to delete the Documents folder, but there are existing files within that folder, so it won't let me delete it. What is the easiest way to delete ALL files within that folder?
View 1 RepliesI have some code that launches a .bat file. The error comes from within the .bat file, navigating to the specified directory."F/Program Files/ Tversity/Media Server/data/ if i run cmd, then manually navigate to F/program files, i cannot navigate into any other directory within program files. Wierd..if there is an easier option to just use vb.net without launching a .bat that might help please let me know. i know i am not showing any vb.net code, but it just launches a .bat file. i know the forum rules, but i am hoping that someone might know why i can't navigate to my program files. it is not permissions, i am an admin on the local machine no domain.
View 1 RepliesJust wondering how to delete a selected record from a .dat file
I am new to programming so go easy
I'm working on this program to delete .tmp files that are older then 5 days. The only problem that im running into is if there are no files older than 5 days to display a messagebox "There are no .tmp files older than 5 days".
View 4 RepliesI have a problem with a progress bar, i want to delete a folder with this sub:
Dim di As New System.IO.DirectoryInfo(path)
di.Delete(True)
I would like to see a progress bar. I saw some examples with copy but doesn't work with this sub.
I'm experiencing a wierd problem deleting some .csv files. Any .csv files named 1.csv, 2.csv, or 3.csv will not delete using delete() method of system.io namespace. if i do any number greater than 3 it works. For example, 4.csv, 5.csv, etc. works fine. 1.xls, 2.xls also is ok. The error it is throwing in my log is 'access to the file is denied.' Nothing is using the file. I even copied a new file into the directory and it does not work. I even created a 1.csv in a totally different directory with no luck. What is going on with this? Has anyone ever experienced this?
View 9 RepliesI am trying to delete an item from a text file based on if an item appears in a listbox but keep getting an error " Index was out of range. Must be non-negative and less than the size of the collection." The line it is returning the error on is the the first IF statement of the below text.
Code:
Dim Lines As new List(Of String) (IO.File.ReadAllLines("Carl.txt"))
For i As Integer = 0 To Lines.Count -1
If Lines(i).Contains (listBox1.text) Then
Lines.RemoveAt(i)
End If
Next
IO.File.WriteAllLines("carl.txt", Lines.ToArray)
End If
I have made an employee list and linked it to an Access database. The initial problem I was having is that in my program I had to link their ID's and names so if you click on an employee in the listbox, his or her's ID would automatically display in the textbox below. Since I did not know how to do so, I decided to make an array and store the ID and names separately while the listbox is being compiled. And so, the form became linked and adding became easy to code.But my problem came in deleting an employee. When deleting the name should be removed from the list, but this is where the order of the arrays messed me up. How do you maintain the order of the array? Here is the code I used. I dimmed 'count' as an integer and it is responsible for keeping that order.[code]You will see Staff_CodeTextBoxes etc. and info_Staff_CodeTextBoxes. etc.These text boxes (not visible to the user) are responsible for holding the data while the array takes the data from it, or adds it's own data to it.
View 4 RepliesHow can I delete a row from an SQL database based on what item is selected in a listbox?
The listbox is populated by the database, I bound it to the data source.
I tried this code but get an error:vb
Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click Dim myCriteria As String = CStr(ListBox1.SelectedItem) Dim deleteStr As String deleteStr = "DELETE customText WHERE userText = 'myCriteria' " End Sub
[Code]...
I have a serious problem,so i tought i can ask here.I'm only a BEGINER!So,i looked on youtube,to make an anti-virus in Visual Basic(i then heard about VB2008:D).I maked a scan button,and putted some strings that will scan some computer's folders and show de detected viruses on a letterbox.Now,i wonder if someone nows a way(code or not) to add a button that will delete all the files detected that are shown on that letterbox.I want not to delet them manualy,i want my small anti-virus to that that.IS THERE A WAY?
View 14 RepliesI have VB 2008. How can I delete ALL files in a directory with the extension ".gif" ?
View 2 RepliesEach time it runs, a program of mine creates an Excel document and names it using the current date ("Alerts from 29062011.xlsx" for example). The program gets run once a day,every day.The users have requested that I have the program delete the previous days Excel file each time it runs so that they don't take up space. I'm unsure how to do this though since, for example, if it is run on the first day of the month it would have to know
View 6 RepliesMy naming convention for certain files is ------------kill 28 nov 2010.ext Is there a way I can throw an if statement and a few variables together to check each file in a folder and if date.today = variable then delete file? I want to make a program i can schedule to run daily w/task scheduler, I haven't used VB in awhile but just found the disks from school so i figured this was the easiest way to go about it.
View 9 RepliesI am trying to delete multiple files in a certain directory. I need to delete *.o, *.r, *.w, *.rs, *.op, *.os. My coding does not seem to be working.
My.Computer.FileSystem.CurrentDirectory = "c:RELAP5MOD4Demo"
I am concatinating a couple of text files and then deleting the individual files. (Not the output file)
The only problem is that I am getting a permission error "Exception from HRESULT: 0x800A0046 (CTL_E_PERMISSIONDENIED)" when I try to delete the files.
I can delete the files using the code below if I do not concatinate the files but as soon as I do I cannot delete them.
To concatinate:
Public Sub MeltText()
Dim SW As New IO.StreamWriter(OutPutFile)
Dim Files As String() = IO.Directory.GetFiles(StartDirectory, "*.txt")
Dim File As String
SW.WriteLine("Sw
how to even start a code project of this sort but here it goes... I have an external Hard Drive with some music. My itunes makes duplicates of all my songs so this is what i have.
Dance.mp3
Dance 1.mp3
Dance 2.mp3
Dance 3.mp3
Party.mp3
Party 1.mp3
[Code]...
What I want to do is have the program search the files and delete all files that have a duplicate with a number behind it... Now I would use windows search but some of the songs are like 1001.mp3 or 1001 1.mp3... I want it to look like this when i get done (from the above):
[Code]...
I have created a project where I can attach files and I am displaying the name of the file, example:
Mytestfile.doc
mytestfile.txt
Mytestfile.pdf
I have the names being displayed on a listbox, so far everything is working just the way I expected to work.When a file is selected from my opendialogbox, the file gets saved into a folder under my local disk, so far so good.The problem that I am having is deleting the file from the folder.I have added a delete button and I would like to when I click or highlight one of the file names to go into where the file was saved previously and deleted This is the code that I have for the delete funtion:
[CODE Dim sFileName As String = "C:program filesSupport DeskAttachments" & ListBox1.Text
System.IO.File.Delete(sFileName)][/code]
The problem is that if I add the code to the clcik event under the listbox, it works great, but if I add the code to the click event under my delete button, it doesn't work, what I found is that under the path, if I am under the click event from the listbox when it gets to the lisxtbox.text it displays the file name, which is what I whant, but when i tried the code under the click event under my delete button the listbox.text is blank.
I have a series of large files (4GB) that when I delete takes a very long time. This only occurs on a USB drive that I have attached to my PC. If I do the same thing on the internal drive the files delete quickly. It is as if the files are being overwritten before being deleted. I am looking for some guidance or other approaches.
View 5 Replies
