Updating And Deleting An Image?
Mar 7, 2012
i have doing a project using vb.net which a function like insert,update and delete data from database including image. i have successfully insert the image what i did for that is i copy the image to a location named image in current directory of the system and save the path into the database according to the user id.now the problem is, when user need to update the details the image won't update i have an error and when user wants to delete the details, the details in the database deleted but the image not.
Codes:
insert data
Private Sub btnSave_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)
[code]......
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Jan 25, 2012
I have a webpage with a form that is used to edit some object. This object contains a Collection of other objects defined like this: Public Overridable Property Employees As List(Of Employee)
On a form I can delete an employee, add a new one or modify existing one. When I click save new values are sent to the server. On a server I check if the user exists. If exists then I modify its values, if it does not exist then I add it. All employees that exist on the server and were not sent are marked as deleted (State changed to EntityState.Deleted). I try to use the following code (dbCollection = database entities, newCollection = collection sent from the form):
[Code]...
This code does not work, because changing to EntityState.Deleted removes the object from collection, and for each loop breaks, since the collection is modified...I know that I can overcome this problem by using a for loop or adding objects to delete to some other list first, but I hope maybe there is a pattern that would make my code nicer.
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Jun 17, 2012
I am getting the attached error while updating or deleting the records. [code]...
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Jun 14, 2009
I have an app that loads a jpg into a picyure box, then updates exif data in exifworks classThe problem is that when I save the image(from image used for picture box) or class (to save exif data) then try to delete, sometimes I get success, others it won't allow delet I have gone to the trouble of using gc.collect, do events, put the delete in a timer & wait for the delete before continuing & still get the problem
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Nov 5, 2010
im having a problem on double execution, this is a part of audit trail on my system, the DELETE FUNCTION is working, but it aint updating, im getting an error - it says that "Syntax Error on update statement" on i tried to manually query it on my access and it is working, i bold the statements that affectes the UPDATE function
Dim burahin As String
burahin = MsgBox("Are you sure you want to delete a customer from the database", vbOKCancel + vbQuestion, "Administrator")
If burahin = vbOK Then
[code]....
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Mar 15, 2012
I start my project in vb.net backend is sql server i have completed my design now i start my coding but i am confused for connectivity code whether i used dataset or datable which is good? please give me best connection code for retriving,updating and deleting data from database..
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Feb 12, 2012
My project involves making a table database that displays student number, surname, first name, homeroom, and grade avg. Through SQL commands, there must be functions to add, update, delete, search by field, and save records to the database.I have already set the database up just fine and displayed it in a DataGridView. Through the DataGridView, I was able to go to the "Add Query" area, and I successfully made the queries necessary for searching by field. However, when I try to do anything other than a search using the query builder (ie start my SQL command with INSERT INTO or DELETE FROM), I ultimately get the message "Failed to get schema for this query"For example, this SQL code (to add an entry to the database) worked when I was in the Query Builder (and the entry that it made is still in the database), but when I finally tried to confirm it, I got the "Failed to get schema for this query" message.Being unable to add entries to the database this way, I tried to do it with textboxes on a form. Each textbox will have one of the fields, and at the click of a button, they would be put into the table. My code is below. I do not know what is wrong withit. When I run it, my fields do not appear on the DataGridView immediately, but I must run the program again to see it. The time after, the entry is gone. So I am not sure how exactly such entries are to be saved.
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Try
[code].....
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Jun 16, 2012
I have designed a form which contains a listview(to see the list records) and textboxes (used for adding or updating).an already save record into table using this
cmd.Connection = con
cmd.CommandText = "INSERT INTO student_info_tbl VALUES('" & txtUserId.Text & "','" & txtFirstName.Text & "','" & txtMiddleName.Text & "','" & txtLastName.Text _
[code].....
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Jul 8, 2009
We are working on an asp.net 2.0 web app that emails users an ical to save to their outlook 2003 calendar. We noticed none of the code to update or delete an item seem to work even though the ical 2.0 spec supports it. We are curious if Outlook 2003 just ignores this?Does Outlook 2007 act differently?We have situations where an event may change or be cancelled which fires off an email notification but the updated ical just adds a new event, it nevers deletes and or moves the original.
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Apr 11, 2009
I have tried everything.but im not able to insert updat and delete the excel file..im able to connect the excel sheet.the connection also seems to be opened...here s my connection string:
Dim sConnectionString As String
Const kunal = "C:"
sConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;" & _
[code].....
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Mar 24, 2011
How can I do this, this what I got so far.
Dim ClassID As Integer = 1
Dim da As New SqlDataAdapter
Dim con As New SqlConnection("Data Source=.SQLEXPRESS;AttachDbFilename=D:Database
[code].....
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Aug 10, 2009
How can i delete image files (ex *.gif) that might be in use, by another process in a directory?
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Jul 28, 2009
I have spent several hours trying to delete a row and insert a row into an Access database using the OLEDBDataadapter and dataSets without any success. I don't get any errors it just doesn't update the datatable. Here is the last version of the code I have been trying to get to work. I have done a lot of searching and have
Data save
Private Sub SaveNumDte(ByVal ltoNum As String, ByVal ltoDate As Date)
Dim numTotal, x, MaxRows As Integer
[code].....
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Apr 26, 2012
nd got stuck with slight problem. i just wonder how can i update a certain column in the sql server database when application forms gets started.This code below updates all the records when forms loads but i need to make it specific one. in this case, i would like to have update button to update/modify the existing one.
vb.net
Private Sub Button5_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button5.Click
[code].....
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Aug 14, 2011
I'd like to verify if an image control has an image loaded . If it does , I want to unload that image (and load no image) , but if the image control has no image loaded , I want to load an image . Is it possible ?
If ImageMY.Image.Equals(Nothing) Then
ImageMY.Image = System.Drawing.Image.FromFile("C:ImageBlaBlaBla.jpg")
Else
[code].....
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Aug 26, 2011
I have a ftp chat of sorts and I want to make it so users can delete their own messages (Its all basically run off a .txt in the ftp). I just need a little help cause I don't know how to delete the off of a ftp. I
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Apr 20, 2011
I have this code which should make my application start on startup or stop it from starting on startup depending on whether a checkbox is checked or not:
If MnuItemAutoStart.Checked = True Then
My.Settings.Startup = True
'This code all works fine, it creates the registry key like clockwork
Dim oReg As RegistryKey = Registry.LocalMachine
[code]....
I have tried running the program as administrator, using a different registry value, turning off all of my antivirus & firewalls and loads of other stuff. The strange thing is that I can delete the registry key in regedit, or any other program, it's just my program won't do it. It works on another program with exactly the same code (same startup code, different program).
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May 9, 2009
Casting Table has MovieID , and ActorIDActor Table has ActorIDThis code deletes a row from the movies table(using a datagrid in vb.net), I need all the rows in the Casting table with the same MovieID to also be deleted.
Dim result As String
Dim i As Integer
i = MovieDataGridView.CurrentRow.Index
[code].....
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Oct 9, 2009
I have a datagridview control that displays a list of expenses. I would like to code a button that will delete the record from the DGV and the DB table. Then I would like it to update so the DGV still shows up the updated DGV
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Mar 13, 2012
i am trying to delete a node based on the userName input:This is the set up of my xml File:
[Code]...
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Jan 30, 2011
I created a time clock program for a friends business and I added a place for them to use pictures for the employee. It uses the employee number to grab the photos from a folder and displays it (ex. employee #1 would like for 1.jpg). I want to let them change the picture without going to that folder, delete the old one, copy the new one and then rename it. I also let it have a default photo (theres 2, one for females and one for males, which are matched by there gender) just in case they haven't had a photo added yet. My trouble is, if I try to update the photo and delete the old photo, I get an error saying its in use by another process. My code goes like this, check to see if the employee has a photo, if it does, it will delete that photo (this is where I get the error), copy the new photo (already selected in previous code) and then sets the photo. how to release the photo from the project before I delete?
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Jun 6, 2011
I have created a form called new users, I have added my data source, draged over the objects I want from the dataset onto the form and all is well appart from the fact that I cant delete records.
To add them I simply click the add button, put in my info and then click the little disk button to update the dataset.This does not work for the delete button though, instead I get the following error
UPDATE REQUIRES A VALID DELETE COMMAND WHEN PASSED DATA ROW COLLECTION WITH DELETED ROWS.
[Code]...
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Feb 9, 2009
I have been looking for ages trying to find a way to delete a registry key in vb.net - This works: My.Computer.Registry.LocalMachine.DeleteSubKey
But my problem is that the key I want to delete has a different name on every computer. I.E. "KL Deployment Wrapper5444789417547544987"
I have played arround with: My.Computer.Registry.LocalMachine.GetSubKeyNames.Find
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Jul 19, 2011
I am having problem deleting my data on click event. Here is my
Dim inc As Integer
Dim cs As New SqlConnection("Data Source=ConnectSQLEXPRESS;Initial Catalog=ForumCrawl;Integrated Security=True")
[Code].....
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Jun 17, 2011
I need to delete some rows from csv file based on a column value. Here is my sample.csv file [code]In my vb.net winforom application, I have to read this file and need to delete the rows related to 06/06/10 date column values then write the remaining rows into new.csv file. So far my program works on reading whole data present in the file.[code]
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Apr 20, 2012
i am creating a console app that will delete pictures from a directory every 30 minutes. Problem is that its being populated by files every minute or so. So if i go and delete files in that directory then it may cause an error trying to delete a file thats being created just then or opened.
I currently have this code to copy the files to another directory and then delete them from the source directory.Dim f() As String = Directory.GetFiles(sourceDir)
[Code]...
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Apr 27, 2012
I'm building out a decommissioning application that will allow an individual to provide an computer name and the utility will go out and purge the computer record from various locations. I'm running into a problem when attempting to delete a computer account from Active Directory. I'm impersonating a service account that only has rights to "Delete All Child Objects" within a particular OU structure. The code below works if I run it with my domain admin account; however fails with an "Access Denied" when I run it with the impersonated service account. I have verified that the permissions are correct within AD as I can launch Active Directory Users and Computers using a "runas" and providing the service account credentials and I can delete computer objects perfectly fine.
Wondering if anyone has run into this before or has a different way to code this while still utilizing my current OU permissions. My gut tells me the "DeleteTree" method is doing more then just deleting the object.
Sub Main()
Dim strAsset As String = "computer9002"
Dim strADUsername As String = "serviceaccount@domain.com"
[Code]....
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Sep 2, 2011
My [code]...
But how i avoid when you selected nothing, you can delete.
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Feb 12, 2011
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.
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Apr 5, 2012
If System.IO.Directory.Exists(HttpContext.Current.Server.MapPath("images/TravelogueGallery/" & getMaxID())) Then
System.IO.Directory.Delete(HttpContext.Current.Server.MapPath("images/TravelogueGallery/" & getMaxID()), True)
End If
I am using the above code snippet to delete a directory but I get this error:
'G:ProjectsLatestLTCIndia 05-04-12 1415imagesTravelogueGallery19' is not a valid virtual path.
UPDATE: I have updated the question with the correct answer. The above code snippet works just fine.
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