Asp.net - Which Encoding Or Encryption Algorithm Should I Use For Query String So That It Will Result In Shortest Posssible Length (minimum Characters)?

May 26, 2012

I am not sending any sensitive or security information in the query string. I am currently using Base64Encoding along with MD5 Hash. I want to shorten my url as far as possible.

[Code]...

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.net Encryption Result Does Not Match The Xcode Encryption Result Given The Same Input Parameters?

Jun 21, 2011

I have set up a method in vb.net and in xcode for encrypting a string using as far as i can tell the same parameters for an AES encryption.I've looked all over the place but cannot find information on whether they use the same encryption algorithm and settings.

this is the vb.net code:

Dim encryptAES As New AesCryptoServiceProvider()
Dim encoding As New UTF8Encoding()
Dim encryptor As ICryptoTransform
encryptAES.Key = encoding.GetBytes("12345678901234567890123456789032")
encryptAES.IV = encoding.GetBytes("1234567890123416")
encryptAES.Mode = CipherMode.CBC

[Code]...

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Finding A String Between 2 Other Strings That Has A Minimum Length Of 5 A Maximum Of 7 And Contains 2 Dots

Oct 5, 2011

What I need to do is find a string that can be any value, and is placed between ">" and "</" with a minimun length of 5 and a maximum length of 7 and contains exactly 2 dots.

So if I have a text file like this:

<a href="www.site.com">a site</a>
text<br />
More test<br />

[Code]....

I want it to find only the 5.0.77. And no, the number isn't always between h2 tags, and the number isn't even always the same. The only thing that is static about it is that is is between ">" and "</" and that it is between 5 and 7 characters and contains 2 dots.

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VS 2010 Shortest Path Algorithm VB?

Jan 28, 2012

C#.Can some one provide me the simplest solution to Shortest Path algorithm (source code) based on VB? I could not find any useful sample on the internet as almost all of them are written in Java or

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Checking String If 7 In Length And Contain Any Other Characters

Dec 3, 2011

I am working on a program that will take in a string of length 7 containing either R,G or B for the colours. The program will then check that the string if 7 in length and if it contains any other characters than R, G or B then it will be invalid. I created this code but when I enter the right string length and characters it always gives me the error for not having the right string length.

Private Sub get_cars()
Dim Letter As String
Dim valid As Boolean
Dim position As Integer
txtPosition.Text = position
[Code] ......

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Create A Random String (about 20 Characters Length)?

Sep 13, 2011

I want to create a random string (about 20 characters length). Is there any built-in class in .net that able to create random string?

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Get The Length (i.e. Number Of Characters) Of An ASCII String In .NET?

Jun 17, 2009

I'm using this code to return some string from a tcpclient but when the string comes back it has a leading " character in it. I'm trying to remove it but the Len() function is reading the number of bytes instead of the string itself. How can I alter this to give me the length of the string as I would normally use it and not of the array underlying the string itself?

Dim bytes(tcpClient.ReceiveBufferSize) As Byte
networkStream.Read(bytes, 0, CInt(tcpClient.ReceiveBufferSize))
' Output the data received from the host to the console.'

[code]....

Len() reports the number of bytes not the number of characters in the string.

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How To Split String Based On Set Length Of Characters

Nov 2, 2011

MVC 3. Vb.net. Part of my app generates PDF files using Itextsharp. Some strings are too long to go onto the background image correctly. So I basically need to split this string when its over 26 characters long and when it splits it cant split in the middle of a word. from there I will use newline to add the string to the right to the next line... I did start bulding the function that I will pass the string into test for length and then pass back the string after it finishes.

Private Function stringLength(ByVal _string As String) As String
If _string.Length < 26 Then
_string.Split(
End If
End Function

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Select All Characters After A $ When The String Coming In Is Always A Different Length

Jan 8, 2011

The following string could be: dsafk$asdlfdl or odldl$ldlkfjdsljfdslkjfdslkjf I need to do the following. Select everything to the rigt of the dollar sign, move it to the left of the dollar sign, and then put a second string that is coming into this function to the right of the dollar sign where the old string was.

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String Modification - Length / Remove Characters

Dec 27, 2010

I have a notify icon and I use the 'Text' property instead of 'BallonTipText' because I just like it better and it fits well with my application. The only thing wrong with that is the 64 character limit. How can I determine the length of a string, remove all characters after the 61st character, then add three periods at the end of the new string? I've looked around and can't find any solution to removing all characters after the first X characters.

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Regex Replace All Characters In Variable Length String?

Oct 6, 2010

Using VB or C#, I am getting a string of variable length from the database. This information is sensitive information that only certain users will be able to see.I have two cases that will use the same logic (I think).scenario 1: replace all characters with xscenario 2: replace all characters with x except the last 4 characters (assume length > 4 - this check is being done).I thought that this would be easiest using Regex.Replace(input, pattern, replacestring). As opposed to a lot of string handling with substrings and forcing a length of 'x's.

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Using Own Encryption Algorithm In VB?

Aug 21, 2009

How would I be able to use my own Encryption Algorithm in my program such as encrypting text. I havn't been able to figure this out.

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VS 2010 Modify Length Of String And Delete Unneeded Characters?

Feb 19, 2012

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

Dim fso, inputFile
Dim str As String
fso = CreateObject("Scripting.FileSystemObject")

[code]....

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Convert Encryption Algorithm To Java (Android)

Dec 21, 2011

i'm using the following algorithm to encrypt and decrypt a string in VB.NET and wanted to do that same method in Android also.

Encryption:

Private Function decryptStr(ByVal key As String, ByVal enc As String) As String
Try
DES.Key = Hash.ComputeHash(System.Text.ASCIIEncoding.ASCII.GetBytes(key))

[Code]....

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No Special Characters | Minimum Characters

Aug 4, 2010

example. i have 2 textboxes and if there empty it says "Incorrect Information", but how do i make it that like when a person enters something into the textbox1 it can be 3 values minimum.. like it could be eather 2 letters 1 number or what ever just more than 3 values (no special characters), and on the password.. 6 values minimum (no special characters).

[Code]...

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Find Shortest ,average And Longest Text Length In Text Box In Visual Basic?

Apr 25, 2011

what is the code for finding the shortest,average and longest sentence form the text box

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Where Is The Proper Location To Embed IV Information For File Encryption Using Rijndael Algorithm?

Sep 29, 2011

I'm creating a Rijndael file encryption application. I will using a unique IV for each file encryption.

My question: Where is the proper place to embed the IV info?

My initial thought is to append it at the end of the file's content. Is that a good choice?

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Regex - Does The Local Part Of An Email Address Have A Minimum Length Requirement

Jul 19, 2011

I am using this expression to validate e-mail addresses:

"^[_a-z0-9-]+(.[a-z0-9-]+)@[a-z0-9-]+(.[a-z0-9-]+)*(.[a-z]{2,4})$"

I noticed that in order for the e-mail address to validate, I need to put in at least 3 characters before the @ symbol. Is this a requirement? What if I just want to have an e-mail address with 1 or 2 characters before the @ symbol?

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Assign Result (from LINQ To XML Query) To List(Of String)?

Jul 6, 2011

Is it wrong? Please suggest me correct way.

Public Function ReadXML() As List(Of String)
Dim list As New List(Of String)
Dim xmlDoc As XDocument = XDocument.Load("C:\MappingFile.xml")

[code].....

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Asp.net - Passing Characters Such As # And ++ In Query String?

Mar 13, 2012

I create a hyperlink that when clicks generates a url like so:

[URL]

And I read it into a text box like so:

Me.txtTags.Text = CType(Request.QueryString("Tag"), String)

But the result of this is that the textbox txtTags will only contain C and doesnt have the ++. I tried [URL]and the # is missing as well. But if I look at the address bar these values are there....

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Algorithm For Centering Text Based On Length And Font?

Aug 29, 2009

I'm making a user control, and I manually draw the text string, but I can't seem to keep it centered. I need it to stay centered no matter what the font, or string length.

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Encoding.GetString Doesn't Return Proper Length

Jun 28, 2010

My system has Japanese regional settings. I have used this as default encoding in my code. But Encoding.GetString() method doesn't return proper length because of DBCS.[code]

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How To Filter Out Some Vulnerability Causing Characters In Query String

Apr 7, 2009

I need to filter out characters like /?-^%{}[];$=*`#|&@'"<>()+,. I need replace this with empty string if it is there in the query string. I am using this in ASP pages.

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.net HTML Encoding ISO10646 Characters, Trade Mark, Euro, Etc?

Jun 20, 2011

I am having a constant series of problems with encoding characters for output in an XML file through .NET. I have a feeling that the problem relates to a setting on the Response object being used but I'm unable to get anywhere finding the correct setting. If I do the following:

system.web.httpcontext.current.response.write("€ & ™" & server.HTMLEncode(" € & ™ "))

I get the following output:

€ & ™ € &amp; ™

The question is why are standard ASCII characters encoded, but the extended(?) characters not? Is there some kind of setting I need to give to the server object to tell it to convert characters like Euro/Trade Mark?One of the bullet points of MSDN's HTMLEncode function page states that: Any ASCII code character whose code is greater-than or equal to 0x80 is converted to &#, where is the ASCII character value.

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Substring - Error: Index And Length Must Refer To A Location Within The String. Parameter Name: Length

Apr 17, 2009

this is not working?

[Code]...

End WhileI am trying to read from the ": " to the end of the line. I keep getting this error: Index and length must refer to a location within the string. Parameter name: length

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Index And Length Must Refer To A Location Within The String. Parameter Name: Length Exception

Feb 17, 2011

am getting the above exception while swaping Items in the list(lstRoutePriority).PFB my code

if (lstRoutePriority.SelectedIndex > 0)
{
//Swap the two items

[Code].....

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Results From Query - Populate Textbox Controls With Query Result?

Mar 11, 2010

how to take a query that returns a single row of data and load that data into textbox controls.I know about ExecuteScalar but it is only good for a single column of data from the query.

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VS 2010 Palindrome - Minimum Number Of Characters To Make A Text Palindrome?

Apr 17, 2012

I'm having a very difficult task here. I need to analyze a certain text and find the minimum number of characters it needs to become a palindrome. The text will not have any special characters or numbers, just alphabet letters. Now, I've made some progression and have tried a lot of situations correctly, but in some situations I've gotten wrong outputs on the MINIMUM number of characters needed. I've tested the below texts:

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C# - Hash Function To Obtain Limited Length Result

Apr 18, 2012

I need to hash a number (about 22 digits) and the result length must be less than 12 characters. It can be a number or a mix of characters, and must be unique. (The number entered will be unique too). For example, if the number entered is 000000000000000000001, the result should be something like 2s5As5A62s. I looked at the typical, like MD5, SHA-1, etc., but they give high length results.

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Hash Value Of Length 16 Characters

Oct 1, 2010

I am using the following piece of code (where sId is a Unique Id in our system) to generate Unique Hash value of 16 characters Max in length

Dim oMD5Hash As System.Security.Cryptography.SHA1 = System.Security.Cryptography.SHA1.Create()
Dim sHash As String =

[Code].....

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