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I have found the above code on generating passwords but when I converted the whole project it displays 2 warnings that the code was obsolete but when I search google I didnt found any fix for that warning.
How to autogenerate username and password in createuserwizard vb.net !
I want username as int data type and auto increment as 1000, 1001, 1002 and so on ...
and password for all user in random numbers ... with characters as aA123Sb
in createuserwizard complete step it will show username and password....
how to do in vb.net ?
I am making a project on cyber cafe and I want to generate username and password automatically on different clicks. I am using
txtusername.text=cstr(int(rnd()*1000))
It gives random numbers but in a same sequence like whenever I run and click on generate button it shows
973
again click
950
again click
939
But when I close my program and again running program then same sequence starting from 973
973
again click
950
again click
939
So I want codes for generating random string or integer without repeating sequence after programme closing again and again.
I want it to do is that you input a string, then you select an algorithm (Theres only going to be one RijnDael) then you input a key, then the Initialization Vector comes from "txtIV.text" then you select the key bytes and the block bytes from the numeric up/down, then you either encrypt or decrypt.
View 1 RepliesOk i am having some issues designing a base-class to handle generics.Caveat is i need to restrict the type put in as a Numeric type, specifically Int16, Int32, or Int64 (Short or Long).I know you can do Of T as {Structure} but i dont want to select the key bytes and the block bytes from the numeric up/down.
View 2 RepliesI keep getting a ProtocolViolationException "Bytes to be written to the stream exceed the Content-Length bytes size specified." on the following code.I've tried setting Content-Length numerous ways with no success.
Dim url = "https://domain.com"
Dim req As WebRequest = WebRequest.Create(url)
req.Method = "POST"
req.ContentType = "application/xml"
[Code]...
What exactly does this line do?
i = stream.Read(bytes, 0, bytes.Length)
Does it read the entire message string sent by the client? I have a line to write to the stream later in the code and that does not seem to be sending anything back to the client, although the code around is excuting.
i = stream.Read(bytes, 0, bytes.Length)
While (i <> 0)
Try
' Translate data bytes to a ASCII string.
[code].....
I created a text file contains 4 bytes of data
AABBCCDD
I just want to read the first 2 bytes (AABB) to execute it with my program.
Then I'll need to read the last 2 bytes (CCDD) for another computer routines
Well basicly i have a file from which i extract bytes and save them to a text file using this code :
Private Sub browse_Click(sender As System.Object, e As System.EventArgs) Handles browse.Click
Dim oFile As System.IO.FileInfo
[Code]....
Everything works well, but I don't know how to recover this file using the extracted data from bytes ! I Know for example the first byte of that file is 39 But i just can't do :
dim mybytes() as byte
mybytes(1)=39
You see what im talking about? I Want to recover those bytes from the same file I saved
The code search for the specified bytes in jpg file and when first match is founded msgbox gives you position of the bytes in the file and Function stops. [Code] Now, because I am newbie to VB I have one question. How can I change the Function so that Function search the whole file for all byte matches?
View 10 RepliesSo i have one file, that has one header that tells me if the bytes are in little or big endian format.The content of the file after the file is something like this, one byte that indicates a new "section", then several bytes until the other "section". This bytes each one represent the number of the bytes that i need to read in the second section.
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I'm receiving a byte array from a network device by using the TcpClient class and as I have no idea how much data will be being sent I have to just declare a buffer that is X number of bytes long and keep reading into that until I've got all of the data. I then convert this byte array to a string using Text.Encoding.ASCII.GetString but the problem is that this gets any null bytes that were at the end of the buffer after the string and it includes them in the string. This then means when I do String.EndsWith it doesnt work as I would expect it to because there are just loads of 0 bytes at the end of the string.
Once I had realised that was what was happening (which took a long time as these null bytes are completely invisible when you are looking at the data in String form) I thought fine I'll just use Trim on the string but I've found that this doesnt make any difference at all. I thought Trim was supposed to remove any blank space from the start/end of a string, which I assumed would include empty bytes as well.
So is there any alternative I can use that will trim the empty bytes off the end or do I have to do it the 'manual' way and loop through my byte array before converting it to string and remove any null bytes? One thing that has just popped into my head as I'm typing this is to try using the Chr method and pass it 0 and combine that with Trim like so:
My issue is regarding overloaded functions of the already provided IIf function that would handle specific types. As you all know the IIf function provided returns objects, rather a specific type so for my needs I created a few overloaded function to do just that but with a specific type in mind. So having said I have IIf functions for types of booleans, strings, bytes, integers, etc etc.
Now my problem is when I'm trying to pass a byte value to this function that would return one of the two byte values. When I do this the designer keeps confusing my values as an integer value and calls for me to convert it to a byte. If I did this then it would defeat my entire purpose for creating these functions-which is to avoid any conversions. The only way I can solve this is by converting the whole statement itself or the true/false parameter parts individual to specify to the designer that these values are bytes. I'm just hoping there's a way of identifying the difference between bytes and integers..
I'm trying to read bytes with 1200 interval for 100 times, but I can't get it working. This is my
Try
Dim fr As FileStream = File.OpenRead(OpenFileDialog1.FileName)
Dim data(fr.Length) As Byte
[Code]....
I need to read from offset 4896, then from 6096, then from 7296 for 100 times and for each interval add to the listbox.
Probably missing something silly here, Her eis what my display looks like Sending image...(401303) I would prefer it displays as Sending image...(391 kb)
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I'm making a custom control suited for handling passwords. I have created a control that inherits from a text box and I have implemented a lot of things so far. But what i want to do now is create a system so that when a user types It will display his last character typed for a X amount of time.Is there a way to turn only selected characters into password characters and still be able to get the password text from the Text property ?
View 3 RepliesI have this code that was working in a proof of concept app I had - but now will not work.
For Each ddfile As String In ddfiles Dim MyThread As Thread ' simple new thread Dim newFS As FSObject = New FSObject() 'new FSObject which is a file object I made up' used because i needed to keep the name and index matched so the callback function had something to work with
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I need to make a program that whatever user enters in bits, then corresponding Return-to-zero signal would generate.. how to generate signals.. so would it be possible to make it in VB.NET?
View 8 RepliesI have code to save records to my mysql database.But first I want to read what is the last number of record and add 1000 on that? What is the proper way to query that first. I want to make the result at unique ID of my clients. Here is my chunks of codes.
Private Sub addClient_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim conn As MySqlConnection
conn = New MySqlConnection
With conn
[code]....
I salvaged the following piece of code from:[URL]...This code works fine, but the problem comes when I need to get all the primes above 100 million. I am familar (at least a little bit) with the BigInteger class in .NET 4.0, but when I replace all the instances of "Integer" with "BigInteger" in the following code I get this error: Value of type 'System.Collections.Generic.List(Of System.Numerics.BigInteger)' cannot be converted to 'System.Collections.Generic.List(Of Integer)'.
(The reason I need primes above 100 million is that I'm trying to work through some projects on www.projecteuler.net)Anyone have some ideas on how to modify the code to work with BigIntegers,
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I am trying to create a sub that plays a sound sweep from the provided values.The code im using works but it sounds horrbile, hacky crap.... I could go on.
Sub PlaySweep(ByVal min As Integer, ByVal max As Integer, ByVal Duration As Integer)
Dim playtime As Long = Duration / (max - min) 'The Play Time for each frequncy
For i = min To max
[code].....
After downloading crystal reports for VS 2010, the code i used in VS 2008 generates a database login error
[code]...
I am trying to create a few random numbers, but cant seem to get it to fire off.
Public Function GetRandom(ByVal Min As Integer, ByVal Max As Integer) As Integer
Static Generator As System.Random = New System.Random()
Return Generator.Next(Min, Max)
End Function
When I call the GetRandom(0,500) and display it out on the page, I don't get anything?
How to generate random number in VB express 2008,2010...I want to generate number between 1 and 10.
View 14 RepliesI've wanting to generate a CRC16-X25 checksum in the form HiByte and LowByte. All the examples I've found by searching are either VB6 which uses functions and data types that are no longer supported or C, C++ etc. Does anyone have a simple VB.Net version? Speed is not an issue.
View 10 RepliesI am wanting to create a registration algorithm for my applications. I would like to generate a number/value from the users hardware/os data and then use that to create a key.
View 1 RepliesI'm creating a radio streaming application, which plays a live stream from various radio stations in a small 'gadget' like application.
The user can add his own custom radio stations, by supplying a Name, a StreamUrl and, optionally, an Image that represents a logo or something of that radio station.The logo will be drawn on the main form when that station is selected.
I need to be able to save these custom stations, and I think it makes sense to use an XML file, which could then look something like this
<CustomStations>
<Station>
<Name>Radio 1</Name>
[code]....
Before I added the support for images, this worked fine, how to store the images. I want the user to be able to select any image from his harddrive, but I don't want to force him to keep that image in the same location afterwards. So I can't rely on the path that he selected. Instead, I want to simply load the image from the path he selected, and then save it somewhere else.
I am storing the XML file in the common application data path which I think is a good place for the images too.The problem is, how to determine a name for the images? I will always have just one image per custom radio station, so it makes sense to me to simply have one Images folder that holds all images, with a unique name.I can see two solutions:
1. Generate a random filename for every image
2. Use the Name of the radio station as the image name
For option 1, I suppose I could just create a string of 16 random characters and call that the filename. The problem of course is that there is no guarantee that I will get a unique filename. Yes, the chances of generating the same name twice randomly are very tiny, but it's still possible, and I just don't like that. How can I ensure that my random filename is unique? I suppose I could always drop the whole thing in a While loop that continues when the new filename already exists, but there must be a better way... Is there nothing in the framework that allows me to generate a unique random filename, in a directory of my choice (so not in the Temp directory...)
I like option 2 much better. The Name of a radio station is unique (there can't be two stations with the same name), so I don't have to worry about filenames conflicting. The problem with this approach is that there are no restrictions on the name. There's nothing stopping the user from naming their custom station "Radio~/aij!""_.fe" or something like that, which is obviously not a valid filename... So, I will have to do 'something' to generate a valid filename from the station name. I could simply remove all non-valid path characters from the name, but then I am no longer guaranteed a unique filename... Suppose there's two stations, one called "Radio/1" and one "Radio1", then after removing the invalid "/" character, the names will be the same and so I will generate the same image path for both....
So, I looked at the example in the codebank, it doesnt quite work, plus, implementing it into a otherwise finished project, seems unlikely.
Heres my question though,
using:
Dim instance As New System.Net.WebClient and then using... instance.downloadfile(fileurl, wheretosave)
Is there a way to get the number of bytes already downloaded using "instance"?
I want to make a form that is only closeable if you have the password. I want the user to be prompted with an alert box asking for a password whenever they try to exit the application. I also need to disable Alt+tab, Ctrl+Alt+Del from being used.
View 4 RepliesI have made a program that uploads pictures to my website. But I have seen that there are loads of decriptors that can check my password. I have heard some people talking about encrepting and decripting but I have NO idea how I have to do that. I am working with a webclient as upload and I am using My.Computer.Network.UploadFile I need to make my password secure, so there is no way to get my password over that program.
View 10 Replies