I'm writing a program that uses a webbrowser to update a page and gather its data. But it's reloading the page from the cache. I located the cache and quickly found that it cannot be deleted like normal files.
Now i really only need to delete one file, specifically a javascript file, because that's the only thing i need updated. But deleting the cache is proving to be a bigger problem than i thought, let alone deleting a single item from the cache.
I am trying to have a DateTime variable which is in a MM/dd/yyyy HH:mm:ss format convert to dd/MM/yyyy HH:mm:ss. I am using VS2008 Pro, and when I create a var:
dim dt as datatime = datetime.now It automatticlly defaults to MM/dd/yyyyy. No matter if I convert, parse, use globalisation or anything... convert to a string, which works with dd/MM/yyyy, but the minute i move it to a DateTime var type it goes back to MM/dd/yyyy I need to use this date/time to insert into a MS SQL Database and the colume is datatime type. But also is part of the app.I do not want this to be a string, I can do that, but I do need it to be a datatime in the correct format (dd/MM/yyyy HH:mm:ss)
I'm having an issue trying to pull information from a specific website. I've asked about this once before, but had no luck through searches or responses.In a nut shell, the issue I'm having is trying to pull information from several URLs from a site.When I load the first URL and pull the information, it works just fine. But if I want to pull another from that same site, it acts like it is loading, but doesn't pull the information. In order for me to gather that information, I have to restart the program, but that beats the purpose.So, I wanted to see if the issue was related to cookies or something else the webbrowser control creates when loading a site. If this is the case, I'd like to clear out this information, or at least try it, after each time it pulls the information from the site.
How can I clear my cache using VB.Net? I'm making a web browser, and this function would be nice. I've tried this to no avail: Response.Cache.SetCacheability(HttpCacheability.NoCache);
I'm making a webbrowser for the pc's on my school, but I want to clear cache & clear cookies everythime someone exit's the webbrowser. Is there a simple code for it?
But after I start again navigate username still is there (website is keeping login for 15 minutes), I tried to dispose webbrowser but I can't find control to start it up.Webbrowser is invisible... how I can restart/reboot/clear cache on webbrowser ?
I have a VB.Net project that creates a new Webbrowser instance which then navigates to a page in order to read the HTML into a variable ( then modify this before displaying in a visable webbrowser).The issue i have is that the webbrowser navigate just reads the page from the cache and does not read it from the server.
I have the following code in my config.vb file in app folder and almost all of my pages use this code for permormance issues i need to have it cached for exp use cache.insert to cache each property How should i use caching?
i have a form with webbrowser and browsed website with an html selectbox in website and i dont want the other <option> elements unless couple of them for easly filling the fields at every visitng
is there any control to remove unwanted html elements exist at string getting by GetElementbyid or somthing like that? so here is some of my code works fine on otherfields
I'm designing a solution that involves a windows service running on a server that will have multiple clients requesting data from it. This windows service needs to read a few short details from some text files on the server, however there could be anywhere from 1000 to 100,000 of these text files. I've already written my code that goes through each of these files and extracts the relevant information from them and populates the properties of an instance of a custom class, then adds the class to a list. The problem is that if there is a large number of these files then looping through them all takes a long time and there are constantly new files being created and deleted in this folder as well, so I have designed the following system:
1. When the service starts it goes through every single file and gets the data I need from each one and writes it to an XML file (just one XML file that holds all of the info for all of the files, not an XML file for each one). It also stores the file name with each entry and then once it has done this loop through all the files the first time it goes through the file paths in the XML file and checks to see if this list of files is the same as what is actually now in the directory (as new files may easily have been created during the initial scan process). I figure this shouldnt take anywhere near as long as the initial scan because it is just checking to see if the same files exist, not reading data from all of them (although it may read data from the 50 or so that might have been created while the initial scan was running). 2. Once it has a list of files in the XML file that is the same as the real list, it starts a FileSystemWatcher to watch for any new files being created/deleted. 3. If the FileSystemWatcher finds a new file then it reads the info from this file and adds it to the XML file. So now when a client requests data from the service, the service just reads through the XML file and basically returns the entire contents to them. This should be much faster than the service reading through every single file every time a client requests data.
All I want to know really is - does this sound like a decent design? One problem I am curious about is what will happen if a client requests data at the same time as a new file being created, because the service will be trying to read from, and write to, the same XML file at the same time... I guess one way around this would be for it to check for a file lock before it tries to write the data and just keeps trying until the file isnt in use (say every 5 seconds or something)
I am using WCF for the communication between the client and server and WPF for the client side app.
I created a script for caching some images my program needs, so they aren't downloaded from the web everytime. But the cache folder is getting big, and it's getting big fast. It's not really the plan to have a cache of 1Gb or something like that, so I would like to create something like this to set the maximum size:
But I don't really know were to start. Sure I can create some check, and if the maximum is exceeded, remove the whole map, or the oldest files. But maybe the oldest files are the one's used the most.
I have programme which contains two list box. when exe is launched it retrieves data from web references [from web services] and immidially it creates folder of cache so when next time exe. is launched it displays data so fast in listboxes. and if cache folder is deleted and exe. is again launched it takes some time to retreave data and again it create cache folder.. how can be this done. if i wish to added controls in cache
I have sent out software created with VB2008 Express and everything has installed correctly on my PC which is running windows vista. But they can't get it to install, one is running XP the other Vista, they get the following errors
Windows XP
Microsoft.VisualBasic.Powerpacks.Vs Version 9.0.0.0. to be installed in the Global Assembly Cache
Windows Vista
system.windows.forms.data visualization version 3.5.0.0 be installed in the global assembley cache first
how can i make my webbrowser open up a new link in my same webbrowser or in another form? basically what im saying is i dont want it opening links in internet explorer.
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
Well I have Flash control and I need to delete it with code.I need to know how to make a new flash control. I know Dim ShoclwaveFlash As New ????. I don't know what to put for ????. I'm using the COM Component for Flash in VB 2008.
I'm a beginner, and this is an assignment - I have a form with a menu strip and a listview.I also have a separate class that handles everything.When there is data in the listview, and one row is selected, I need to be able to remove that row when delete is clicked in the menu strip.The code I need to use for the delete is below. Currently it's just sitting in the class, and I don't know how to use it.
Public Sub Delete(ByVal item As employee) If IndexOf(item) >= 0 Then '"IndexOf" looks for item, returns -1 for not found DeleteAt(IndexOf(item))
I am sucessfully getting pictures and displaying them but having problems deleting them heres everything I am trying to do: frmCapture:Takes pictures from the webcam and stores them in a location with random filenames..User then ends this process by a button which disposes this form and displays the next one below [code]This form then gets all the files in that directory and uses back and forward buttons going through the images in a picture box.When finished the user then hits a close button that displays another form and disposes that one (this new form waits 5 seconds then tries to delete all files in that directory however its getting an access denied because the file is still in use.[code]
i am using vb.net 2008 and sql server 2005 i have read that always use parameteres for adding / deleted but this is very odd.if i delete a set of records using parameters it doesnt delete.i have used
mCmd = "DELETE From TaxStructure WHERE EffDate = @mDt" cmd = New SqlCommand(mCmd, MyConConnection) cmd.Parameters.AddWithValue("@mDt", dtPkEffDate.Value.Date) cmd.ExecuteNonQuery() MyConConnection.Close()
this does not delete the data as it seems the date is not found but if i use this :
mCmd = "DELETE From TaxStructure WHERE EffDate = '" & dtPkEffDate.Value.Date & "'" cmd = New SqlCommand(mCmd, MyConConnection) 'cmd.Parameters.AddWithValue("@mDt", dtPkEffDate.Value.Date) cmd.ExecuteNonQuery() MyConConnection.Close()
this works......now what am i doing wrong in the parameters.its the same sometimes for selecting the records too...somewhere it works somewhere it doesnt.
know this is going to sound weird, but I want to show this program I'm making to a friend of mine and I don't want her to keep the program.... So, is there any way to make the program "commit suicide" during/after closure
I want to let others to delete selected row in the following datagrid view and I have written it like this. Now when I select a row and press the delete button I can remove the selected row but it will not update the database which meant it will not deleting the above row.
I have bound my datagrid view using databinding. Private Sub dgvAllInvoices_UserDeletingRow(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewRowCancelEventArgs) Handles dgvAllInvoices.UserDeletingRow If MessageBox.Show("Do you really want to Delete this Invoice ?", "SD Technology", MessageBoxButtons.YesNo, MessageBoxIcon.Warning) = DialogResult.Yes Then [Code] .....
I'm encountering a problem on how to delete a selected row in a datagrid. This error occurs, "Missing the DataColumn 'ID' for the SourceColumn 'ID'."[codde]
I am deleting a row from a row that is currently selected on a datagridview.I am using a Typed dataset and my datagridview is bounded to a binding source.However, I think my technique is not the best, even though it works.
Dim drDelete() As DataRow ' Get the value of the PK from the currently selected row Dim drv As DataRowView = CType(bsAddressBook.Current, DataRowView)
i have 2 textbox's and 1 button i have 1 big textbox that has a buch of number's in it and the number i want to delete is in the top textbox how can i delete number 2 ? from the big textbox ?
