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This is one of the more documented problems you encounter with Crystal Reports. All you need to do is a little reading of these[^] to get your answer.
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hi
i want to store a password in the database.
for that i m using encrypt and decrypt
for this task i written the following code
i can perform encrypt but while decrypting i could not get back the actual text
please help me ...
this is the code i written ....
Imports System
Imports System.Text
Imports System.Security
Imports System.Security.Cryptography
Imports System.Web.Security
Public Class Form1
Dim xmlpublickey As String
Dim xmlprivatekey As String
Dim plaintextarray() As Byte
Dim hpertextarrray() As Byte
Dim restoredPlainText() As Byte
Dim RSA As New RSACryptoServiceProvider
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
xmlprivatekey = RSA.ToXmlString(True)
xmlpublickey = RSA.ToXmlString(False)
End Sub
Public Sub Encrypt()
RSA.FromXmlString(xmlpublickey)
Dim msg As String = ""
msg = txtoriginal.Text
Dim ue As New UnicodeEncoding
plaintextarray = ue.GetBytes(msg)
hpertextarrray = RSA.Encrypt(plaintextarray, False)
txtcypher.Clear()
For i As Integer = 0 To hpertextarrray.Length - 1
txtcypher.Text = txtcypher.Text + hpertextarrray(i).ToString()
Next
End Sub
Public Sub Decrypt()
RSA.FromXmlString(xmlprivatekey)
restoredPlainText = RSA.Decrypt(hpertextarrray, False)
txtRestrored.Clear()
Dim str As Byte
For i As Integer = 0 To restoredPlainText.Length - 1
str = restoredPlainText(i).ToString()
txtRestrored.Text += GetChar(str, 1)
Next
End Sub
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Encrypt()
End Sub
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
Decrypt()
End Sub
End Class
thanks in advance
lavan kumar
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OK. After taking a look at your code, I'd say scrap it and rewrite it in a more organized fashion, modeling it from this example[^].
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Dear All
I am using public form to handle the current form in the mdiform
like
Public frm As windows.forms.form
and then assign it to a form using the following lines
frm = New Form1
frm.MdiParent = Me
frm.Show()
and usually calling common sub included in every form
but vb2008 shows and error while debugging before run the application checks the included sub in the public form before assigning a form to it and shows
"sub name " is not a member of 'System.Windows.Forms.Form
could anyone help me to avoid this error or show me an alternative way.
Regards
Aiman Farouk
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Aiman Farouk Mohamed wrote: "sub name " is not a member of 'System.Windows.Forms.Form
The error indicates that the subroutine is not found in the object your trying to call it from.
I presume your subroutine is implemented in the Form1 object ?? You can either cast it or change the form variable to Form1 insteast of Windows.Forms.Form
Public frm As Form1
frm.YourSubroutine()
Or using your exisiting code, replace the call to the subroutine as
(frm as Form1).YourSubroutine()
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This doesn't work because you created a normal (nothing on it) instance of a Form class. If you already have a form defined, you should be creating an instace of THAT form, not System.Windows.Form.
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Hello,
I am looking for the methodology to develop the program (preferably webservice) to allow the multiple users on the LAN , to have the certain permission based access on the storage media (like westren digital mybook that connects to the usb port of the computer) ,
so that every user has a purticular quota on the storage media and no body else can access
their folder as well.
need some guidence in this regard.
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So what's with the web service?? What's is it supposed to do??
This is normally done through proper use of NTFS permissions. And it's something that you just set once and forget about it. This is typcially done by LAN Administrators when they setup a new user ID. A directory is also created in a share that houses everyones home directories, then the NTFS permissions are set to allow only that user and the administrators access to it.
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Well the problem is you can do that stuff in case of some domain setup , but it is not the case here. The thing here is to create the type of application that can do the job .
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NTFS permissions are still set the same way, domain or no. Your problem is that in a workgroup setup, each machine maintains it's own set of accounts and no machine trusts the accounts of another. So...
I still have no idea what a web service has to do with this or what you're ultimately trying to accomplish. Your description doesn't make much sense.
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Hello friends,
I am developing an application which handles MS-Outlook programmatically.
I have developed an application which send/recieve emails, reads-inbox,outbox, trash,drafts, etc.
but i am puzzled in one thing is that While reading a bounced/failured emails i saw one things
1)if Ms-outlook is configured with pop.rediffmailpro.com then original message comes with .msg files. while
2)if Ms-outlook is configured with pop.gmail.com then original message comes with mailer-daemon failure body
my question is that
1)who generates .msg files ms-outlook or mailserver ? who ?
2)when .msg file generate?
Can anybody help me. ?
Waiting for reliable/satisfactory answer.
Regards,
Shakil.
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Thanks for this answer.
If this is the main cause of because of mailserver then I have to control the mail server.
Can you please help me how i can control mail server ?
that is I want failures emails from all mailserver
should return back to sender with a .msg file (original email content)
or
should return back to sender without a .msg file
Can i control the mail server to send a specific type of return failures?
Is it possible.? If yes then can you help me little more?
Waiting your reply...
Shakil.
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Okay, so I can connect to my locally running MSSQL database with VB.Net, not a problem. However, what if I would like to deploy this program to other machines, and still wish for them to be able to connect with my DB? Is this possible? Thanks for any help in advance.
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DHalo wrote: However, what if I would like to deploy this program to other machines, and still wish for them to be able to connect with my DB? Is this possible?
yes, it is possible.
try google search. You can get a lot of link
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Well I've figured out that I need to use ODBC, but I'm not sure how to format the connection string to look at an IP or the like...
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You should be able to use ADO.Net, and the SqlClient namespace classes to do what you want. I would only use the ado.net odbc provider if you think you might someday change to a different database engine. In any case, connection strings for either can be found here[^]
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That was helpful, thanks. I did eventually figure it out. I had to enable TCP/IP connections from external networks and open some ports, but now its working. Thanks!
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say i want to slow down my computer to eventually kill it. in a slow way i wud like to create a buffer overflow how can i do this by coding it in vb??
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In light of your other question, noone is going to help you do this. On top of that, just creating a buffer overrun does NOT slow down the machine.
moneyque wrote: i want to slow down my computer to eventually kill it.
Wouldn't it be more efficient to open the case and drop a brick on the motherboard? Please, try it and tell us what the results were!
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im doing a research project and i am making a virus/bacteria that will have time bomb attach to it, this will signify the incubation period. after the time has passed i want to start deleting .dll and temp files. can anyone help because i have no clue where or how to start.
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moneyque wrote: i am making a virus
moneyque wrote: i want to start deleting .dll and temp files.
You're truely an idiot.  Do you really think anyone around here is going to help you write a virus?? Did you know that in the United States, doing so is a federal crime??
moneyque wrote: can anyone help because i have no clue where or how to start.
Thankfully, this is true. Hopefully, it'll stay that way!
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That was awesome, the best I have seen here 
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What Dave said, +
Aiding someone in a crime, makes you partially responsible. Here in the Netherlands you can get up to four years in prison, just for giving a helpful answer to this post.
moneyque wrote: research project
It's not funded research?
I are troll 
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That was really helpful. Many thanks. 
Luc Pattyn [Forum Guidelines] [My Articles]
- before you ask a question here, search CodeProject, then Google
- the quality and detail of your question reflects on the effectiveness of the help you are likely to get
- use the code block button (PRE tags) to preserve formatting when showing multi-line code snippets
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