I need to know how to get all the mime types available to any browser for a downloader for my webbrowser, so far it get's the mime type on navigate and returns it in the event handler but, in the registry any of the 2 ways that there are don't includeevery one, like I can't seem to find application/x-rar-compresses only zip and what not,
View 1 RepliesI want to get the mime type of local .flv file by using this function from code project [URL]
Public Function GetMIMEType(_
ByVal filepath As String) As String
Dim regPerm As RegistryPermission = _
[Code]....
But it returns mime type for .flv file as x-x509-ca-cert
Is it possible to check the MIME Type of a file and compare it to the file extension in VB? Assume that he file type has been changed by the user. I want to test to see if it is of a particular type.
View 2 RepliesI'm using it for my webbrowser I plan to make my own image viewing area and it could aid my downloader.I've googled a bit and got nothing of use.My Site -[URL] Image Hosting File Hosting 1GB Limit per file Unlimited Files Delete Files File Passwords(Optional)
View 3 RepliesI wrote a program to download and play AVI files the files are large in size and long time wise. I have the files playing as they are being downloaded but i can't see how long the file is or seek reliably. i was reading that the AVI headers are in the last 512kb of the AVI file *why would't they put it at the start* lol so my question is is there a way to download the last 512Kb of the file i'm downloading. i have the Bytes Read and Length of the file while its downlaoding i'm just not sure where to go from there, or how to do it atleast. If i had the length in time of the Avi file i could set the trackbar to be able to seek properly. or if someone has an idea how i could get the time of the video by using fps and some math i could prob do it that way too but idk how i would tell how i can find how many kb are in the fps i'm sure it changes so think that way is't going to be reliable. how to get the last 512kb would be the best option not sure if it can be done even.
View 4 RepliesI am trying to add mime types to a godaddy hosting account that uses IIS7.0. Every time I add the mime types, though, it crashes my web site. Here is the config file without the connection strings to the DB:
<?xml version="1.0"?>
<configuration>
<configSections>
[code]....
i got an unexpected problem when i tried to read this registry key
[Code]...
I need to check a value within the registry. The application (Cisco VPN) is a 32bit app so uses Wow6432Node when installed on 64bit operating systems.What would be the best method of selecting which string to use? Checking the OS for x64, attempting to read one and then the other if the first fails? Or is there a better method?
Dim keyName64 As String = "HKEY_LOCAL_MACHINESoftwareWow6432NodeCisco SystemsVPN Client"
Dim keyName32 As String = "HKEY_LOCAL_MACHINESoftwareCisco SystemsVPN Client"
Using .net 4.0 framework?:
Dim registryKey As RegistryKey
If Environment.Is64BitOperatingSystem = True Then
registryKey = registryKey.OpenBaseKey(Microsoft.Win32.RegistryHive.LocalMachine, RegistryView.Registry64)
Else
registryKey = RegistryKey.OpenBaseKey(Microsoft.Win32.RegistryHive.LocalMachine, RegistryView.Registry32)
End If
I want to edit one of the bits in the DefaultConnectionSettings key under [code]...
View 6 RepliesI've been working on this challenge for a while now without much luck. What I'm attempting to do is split a MIME byte response into its individual images. I am given the boundary to split on in the HTTP header but when I attempt the following code it doesnt work.
'boundary to split on
Dim boundary as string = _
"boundarystring"
[Code]....
I'm having an issue with trying to use VB.NET and the WebRequest object to post some cXML text and an attachment.I believe I am formatting the text of the data I wish to post correctly, as it matches samples Ariba has supplied. What I am uncertain of is if I am correctly using the WebRequest object to do the posting.I am setting the Method as "POST" and the ContentType as "multipart/mixed".I can successfully post cXML (using a ContentType of "text/xml") The message I get back from Ariba is "The document could not be parsed: Missing start boundary [ANCLS-741552]", however, as the following code shows, there is a start boundary.I have removed some proprietary data and replaced it with "...". Following the MIME text, I have included the relevant VB.NET code I am using.[code]
View 3 RepliesI'm trying to convert some VB.net code into C# and having issues trying to convert this one line. VB.NET Dim myreg As Microsoft.Win32.Registry I know it's a static so I can't create an instance but when I tried a VB.NET converter to C# the website gives me this: Microsoft.Win32.Registry myreg = null; And gives me an error message: 'Microsoft.Win32.Registry' is a 'type' but is used like a 'variable' In the last part of the Function in VB.NET, myreg is used:
[Code]...
Is there any way I can open a registry file that is not from the local machine? I have the software and system files from another PC and need to create a small code to read and get values from the files. The other PC is down and I just have the registry files so I ruled out the OpenRemoteSubKey method. However, the My.Computer.Registry.GetValue only works on the local machine.
View 10 RepliesIs there any way I can open a registry file that is not from the local machine? I have the software and system files from another PC and need to create a small VB app to read and get values from the files. The other PC is down and I just have the registry files.
View 2 Repliesmy program read and writes into registry and has been working fine, until today when i tested it on a new server i got this error request for the permission of type system.security.permissions. registryPermissions, mscorlib,version=2.0.0.0. i checked the registry permission and made sure all allows are ticked.
View 3 RepliesI'm new in vb.net (application). I need to access files or browse files using vb.net. Does anyone knows how can I do it?? I can use the listview??This is the process:I have a form and I need to browse folders and drivers (C drive/network drive...) in the same form. But how can I do that, how can I display the icons, file, etc. and open it in listview or any control in vb.net.
View 3 RepliesIs there a way to get a list of files in a certain directory and then put them in a context menu strip then when they are clicked have the program open the file. I'm trying to make a flash player that can show the list of flash files and when you click the file path on the context menu strip it will play from that file. Here is what I have:
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
OpenFileDialog1.Filter = "Shockwave Flash Objects (*.swf)|*.swf|All files (*.*)|*.*"
[code].....
I should mention that I'm mainly concerned with Random files.Which is the best method?
1.) Open file, manipulate data and immediatly close the file. (Which means doing this alot everytime data needs to be read, edited, deleted, or saved)
(2.) Open the file when the app starts and let it open for data manipulation until it's time to close the app at which time the file would be closed.
I was always taught option 1. The main reason at the time was to cut down on the chance for data corruption in the file or an outright loss of the file due to outside circumstances like power failure.
I'm using VB.NET in Visual Studio 2008 in a Vista 64-bit OS. I'm trying to find an easy way (there must be one) to quickly retrieve from the registry the application file name and path to use in a Shell command to open a particular file. Specifically, I want the user in my app to be able to click on a PDF file and have the app open that PDF file using the application associated with PDF file types - Acrobat Reader, for example. Anyone have any suggestions as to proper coding & syntax for the following sequence?:
(1) Get name of .exe file associated with .pdf file type (most likely from the HKey Root Classes hive)
(2) Get path for the .exe file
(3) Shell("[pathname]appname.exe filename.pdf")
I've spent a couple of hours looking through the forums and haven't found what I'm looking for.
I'm programming a small windows app that allows the user to fill out some fields and then creates and runs a batch file based on their entries. The program works, but it doesn't.The program creates the batch file just fine but when it tries to run the batch file, it gets errors in the cmd window saying it cannot find the scripts the batch file is trying to call. What's confusing me is that if I take the batch file the program created and run it myself, it works just fine so I know it is not the batch that is the problem. My best guess is that there is some security setting for vs.net that I've overlooked but I am only an "every once in a while" programmer so I really don't know where to look. Additionally after running the batch, the program is supposed to delete the batch file but that fails as well with the message that it cannot find the batch file, the same batch file that it had just created and run.
View 1 Replieshave just started vb .net and im working with the 2005 edition, but i would now like to make a program that i can use at home that will alter files names,Bassically where i rip cd's to put them onto my mp3 player they are always given a name starting with 01. etc, what i would like is a small bit of code that uses a while or for loop to go through every file in the folder and remove the first three characters.
View 4 RepliesI'm trying to keep the oldest file and move the new ones to a different directory
View 7 Replieshow to read and write random access records in .NET. Now I know random access files are dead and the response on every query I found with google/bing/yahoo searches was don't use random access use Binary serialization but I can not. I have a situation where I need to read and modify 256 byte records in a file that is used by another application.
Now for a bit of background the file is made up of 27 fixed length records of 256 bytes. Each of the records has a separate structure consisting of 30-120 fields. The proplem I am having is I can create the record structures but when using the FileGet method I am receiving an error. Now I have found samples that showed the same format I am using that claim to work.
The error I am getting is Option Strict On disallows narrowing from type 'System.ValueType' to type 'ProgramName.ModuleName.Record' in copying the value of 'ByRef' paramater 'Value' back to the matching argument.
The basic layout (simplified) is as follows:
Code:
Structure Record
<VBFixedString(6)> Public SomeParam as String
Public SomeNumber as Short
[Code]....
Now the overloads for FileGet show all of the data types including Object. But I have tried various methods to retreive the 256 byte record but without success. Do I have to actually read each of the several hundred fields of the structure one by one? Or am i overlooking something (I have been known for this in the past)
Or (and I'll kick myself if this is the only way) do I just have to set option strict Off in the module and the code as above will actually work.
I would love to be able to just ditch the random access file but I have to keep it for compatibility with several other applications at this time.
Alright this is what im working with. Im Working with vb.net 2003.I have (X) amount txt files in "C:Marble".In each txt files there are 3 lines.I want to read the first line of each txt file and display them in a listbox. [code] Things i need to Find:
-1 How to tell how many files are in a folder
-2 How to create a loop were it reads the first line of each file in that folder
An application that my company uses stores report files with a .dat extension for use with their software. These files can be opened in notepad and the basic report information can be seen as text. I am attempting to write an app that opens and reads data from these .dat files and displays it in a checked listbox. My hangup thus far is that I can't figure out how to read the data from the .dat files since they are not .txt files. Can anyone point me in the right direction?
[Code]...
I know how to get a list of files in a local Windows machine's specific directory:
Dim dirInfo As DirectoryInfo = New DirectoryInfo("C:Temp")
Dim fileListing() As FileInfo = dirInfo.GetFiles()
But how do I use this class for a mainframe system where user ID, password and 'change directory' command are needed?
When I attempt to just access the server without credentials and just do the Windows version and use the syntax "\server_nameAUTO:RPTS.", where 'AUTO:RPTS.' is the mainframe directory name I get the following error: "The given path's format is not supported."
When I just use '\server_name' I get: "The UNC path should be of the form \servershare."
I am using zipforge.net to archive files in a small backup program I am creating. Everything works fine however if I try to archive a large number of files the process of zipping them gets slower the further along in the job it gets.
Example: I have a directory that contains a little over 100,000 files in it. Each file is only about 200k of text. When I use the zipforge zip class it starts zip'ing very quickly but as it gets about 40% of the way through the directory it starts to slow down... at about 60% its working at a snails pace.
Memory usage for my solution also goes up proportionate to the archive file size as it grows. Currently it takes around 26hours to backup this directory which only contains 4 gigs worth of information.
If I use a program like winzip I can zip the folder in less than an hour. I am thinking there has to be a way to write to the end of the zip file without having to open it every time or without keeping it open. My backup software scans the specified folder and writes each file path and name into a text file. Then it reads the text file line by line and passes the path + file info to the zipforge addfile().
I have made a registry entry as follows: HKEY_CLASSES_ROOTMy AppShellOpenCommandAnd gave it the value: "C:Program Filesmyapp.exe" "%1" "%2"I also had a drophandler to for the apphis entry works fine for opening one file that is dragged to my app's icon. The problem is that I can only drag one file at a time into the app. If I try to drag more, it only ees the first file and ignores the others. I use the My.Application.CommandLineArgs array to access the command arguments. For example, My.Application.CommandLineArgs.Item(1) will open the file. If I change the registry entry to:"C:Program Filesmyapp.exe" "%1" "%2" "%3"This will open the first two files, but ignore the rest. If I change the registry entry to "C:Program Filesmyapp.exe" "%1" "%2" "%3" "%4"This will have the same behavior as the previous entry and ignore all but the first two files.
View 2 RepliesFor a project, I need to extract all the frames of an AVI video. This I have accomplished by with free program. The problem: it took a 30 second clip and spit back 5400 some frames, and the image only changes every 20 frames or so. I really only need about 270 frames, but I didn't want to go through each one manually. So, I wrote a small program using Visual Studio 2008 and VB to open each image in binary and compare it to the one before that. If there is a discrepancy of more than 55000 (to accommodate slight errors in capturing), it leaves the file be. If not, it deletes it.
After much troubleshooting, I got it all to work. I ran it on the directory containing the images, but when it finished, only the first image remained. I checked into it, and found that the FSO loop I have set up to loop through each file was pulling the files in apparently random order. It will give me the image "bg(01).bmp" and then immediately "bg(1362).bmp" and so on. And the order changes every run.
I tried setting up an array to generate a list of all the files and then sort them, so I could pull off the name of the file, then the next one, ect. but it took over 3 hours to finish processing the array, and then It was using a huge chunk of RAM.Is there some way to "force" vb to pull off files in alphabetical order? here is my, code, it belongs with a form. fPath is a global variable, simply pointing to the source directory.
[Code]...
im looking for code to copy the files from the floppy drive to a removable drive on the computer.For example:
Copy A:contents to Z:contents