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I have been having a look at the below and I can't figure this out as well. However, I have the below code that works which I use to encrypt passwords to and from the DB.
//Encrypt Value formatted as a base64-encoded string. public static string Encrypt(string plainText, string passPhrase, string saltValue, string hashAlgorithm, int passwordIterations, string initVector, int keySize) { //Covert strings into byte arrays. byte[] initVectorBytes = Encoding.ASCII.GetBytes(initVector); byte[] salValueBytes = Encoding.ASCII.GetBytes(saltValue); //Convert our plaintext password to a byte array. byte[] plainTextBytes = Encoding.UTF8.GetBytes(plainText); //Create a password from which the value will be derived PasswordDeriveBytes password = new PasswordDeriveBytes(passPhrase, salValueBytes, hashAlgorithm, passwordIterations); //Use the password to generate psuedo-random bytes for encryption key. //Specify the size of the key in bytes (intead of bits). byte[] keyBytes = password.GetBytes(keySize / 8); //Create uninitialized Rijndael encryption object. RijndaelManaged symmetricKey = new RijndaelManaged(); //Set encryption mode to Cipher Block Chaining(CBC). symmetricKey.Mode = CipherMode.CBC; //Generate encryptor from the existing key bytes and initialization vector. ICryptoTransform encryptor = symmetricKey.CreateEncryptor(keyBytes, initVectorBytes); //Define memorystream to hold encrypted data. MemoryStream memoryStream = new MemoryStream(); //Define Cryptographic stream. (Always use write mode) CryptoStream cryptoStream = new CryptoStream(memoryStream, encryptor, CryptoStreamMode.Write); //Start Encrypting cryptoStream.Write(plainTextBytes, 0, plainTextBytes.Length); //Finish encrypting cryptoStream.FlushFinalBlock(); //Convert encrypted stream to a byte array byte[] cipherTextBytes = memoryStream.ToArray(); //Close both streams memoryStream.Close(); cryptoStream.Close(); //Convert to encrypted into base64-encoding string string cipherText = Convert.ToBase64String(cipherTextBytes); //return encrypted string return cipherText; } //Now for the Decyption. public static string Decrypt(string cipherText, string passPhrase, string saltValue, string hashAlgorithm, int passwordIterations, string initVector, int keySize) { byte[] initVectorBytes = Encoding.ASCII.GetBytes(initVector); byte[] saltValueBytes = Encoding.ASCII.GetBytes(saltValue); byte[] cipherTextBytes = Convert.FromBase64String(cipherText); PasswordDeriveBytes password = new PasswordDeriveBytes( passPhrase, saltValueBytes, hashAlgorithm, passwordIterations); byte[] keyBytes = password.GetBytes(keySize / 8); RijndaelManaged symmetricKey = new RijndaelManaged(); symmetricKey.Mode = CipherMode.CBC; ICryptoTransform decryptor = symmetricKey.CreateDecryptor( keyBytes, initVectorBytes); MemoryStream memoryStream = new MemoryStream(cipherTextBytes); CryptoStream cryptoStream = new CryptoStream(memoryStream, decryptor, CryptoStreamMode.Read); byte[] plainTextBytes = new byte[cipherTextBytes.Length]; int decryptedByteCount = cryptoStream.Read(plainTextBytes, 0, plainTextBytes.Length); memoryStream.Close(); cryptoStream.Close(); string plainText = Encoding.UTF8.GetString(plainTextBytes, 0, decryptedByteCount); return plainText; }
Excellence is doing ordinary things extraordinarily well.
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Thats great. Thanks guys. I'll give your code a try... 
oooo, the Jedi's will feel this one....
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how can i get all files handled by a specific process without using WMI
in c#?
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Do you mean this one?
foreach(ProcessModule pm in Process.GetCurrentProcess().Modules)
{
Console.WriteLine(pm.FileName);
}
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No,I didn't mean modules of a process.
What i need get non executable files associated to a process like .doc , .pdf
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one of running processes in the windows task manager is winword.exe
I need to retrieve all running files with .doc extension(as an example)
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I have a DataGridView for which two if its columns are 'Period' and 'Year'.
How can I filter the grid to display, say, all the rows which fall between period 9 2007 and period 5 2008 please?
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(Period > 9 AND Year > 2007) AND (Period < 5 AND Year < 2008)
Something like this?
I are troll 
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You have to use DataView obj=new DataView(ds.tables[0]);
obj.RowFilter="your condition here";
now put obj as your datasource
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Hi everyone,
My question is simply about how to execute such an anonymous pl/sql block from ado, the below example works fine if pasted in my Oracle Sql*Plus terminal but not from my application, what's more, if I made it simple like just CREATE SEQUENCE MY_SEQUENCE it would work but as you can see, my script is a bit more complicated than that and I dont know how to make ado do it for me like it's being executed directly at the database terminal..
Please advise...
string strSEQ =
@"DECLARE
N NUMBER(10);
BEGIN
SELECT MAX(ID)+1 INTO N FROM MY_TABLE;
-- CREATING SEQUENCE
Execute immediate ('CREATE SEQUENCE SEQ_TEMP
MINVALUE 1
START WITH '||N||'
INCREMENT BY 1
CACHE 20
ORDER');
END;
/
"
OracleCommand cmd = new OracleCommand(String.Empty, _connection);
cmd.CommandText = strSEQ;
cmd.ExecuteNonQuery();
Internal .Net Framework Data Provider error 30.
All generalizations are wrong, including this one!
(\ /)
(O.o)
(><)
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Just found another way round by generating the desired script file, storing it in a temporary file and execute it from SQLPLUS. Here's how:
string strSEQ =
@"DECLARE
N NUMBER(10);
BEGIN
SELECT MAX(ID)+1 INTO N FROM "+ strTableName +@";
-- CREATING SEQUENCE
Execute immediate ('DROP SEQUENCE SEQ_TEMP');
Execute immediate ('CREATE SEQUENCE SEQ_TEMP
MINVALUE 1
START WITH '||N||'
INCREMENT BY 1
CACHE 20
ORDER');
END;
/
";
string strTempFile = Environment.GetEnvironmentVariable("TEMP")+"\\tmp_SCRIPT.SQL";
string CR = "\r\n";
System.IO.StreamWriter sw;
System.Diagnostics.Process p = new System.Diagnostics.Process();
p.StartInfo.WindowStyle = System.Diagnostics.ProcessWindowStyle.Hidden;
p.StartInfo.CreateNoWindow = true;
p.EnableRaisingEvents = true;
p.Exited += new System.EventHandler(p_Exited);
p.StartInfo.FileName = @"SQLPLUS.exe";
sw = new System.IO.StreamWriter(strTempFile);
sw.Write(strSEQ);
sw.Flush();
sw.Close();
p.StartInfo.Arguments = @"USERNAME/PASSWORD @" + strTempFile + " >> " +
strTempFile.Replace(".sql",".log");
p.Start();
}
private void p_Exited(object sender, EventArgs e)
{
MessageBox.Show("Done");
}
All generalizations are wrong, including this one!
(\ /)
(O.o)
(><)
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How to lock datagrid column width adjustment at runtime
thanks
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Use the AllowUserToResizeColumns property. Read all about it here[^].
I are troll
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Hi,
you can use the template of DataGrid using table and set the table td width
I am sure this will solve your problem
Thank You
Vinod Kr.
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hello....i have created a socket in my application and i need to send the data over an interval of 10 seconds so am creating a new socket in the timer.
the problem with this approach is that the application is creating a new socket every 10 seconds so that my server is getting lots of exceptions...
may i know is it possible to send the data over a single socket insted of creating a new socket every time i need to send the data..
thanks...
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Just create 1 socket connection. Just write to that stream every 10s.
You don't need to create a socket connection every 10s.
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thans for that... but am using asynchronous sockets.. so i would be thankful for u if u give me a hint how to write to the single socket stream....
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Hi,
How can i check the Check directory exist is FTP?
Thankyou
YPKI
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What do you mean?
You want to check if an ftp address exists? (just try to connect to it)
You want to check if a directory exists? use directory.exists
You want to check if a certain directory is a directory that is being exposed by an ftp program? See if you can connect to the folder with an ftp connection.
You want all the directory's of an ftp? There is tons off code out there for doing this just google 'ftp +c#.net'
On a side note: next time be a bit more clear about what you want, maybe give a short example.
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Do you mean you want to check if a directory path is FTP? If so, just use the string.StartsWith function - if it starts with ftp://, then it's an FTP directory
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What exceptions cannot be caught by try-catch block?
StackOverflowException for one. (Just try write a simple infinite recursive function and invoke from a simple WIN32 console main)
What else?
dev
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There aren't that many that can't be caught. Off the top of my head, the only other one I can think of is an OutOfMemoryException.
"WPF has many lovers. It's a veritable porn star!" - Josh Smith As Braveheart once said, "You can take our freedom but you'll never take our Hobnobs!" - Martin Hughes.
My blog | My articles | MoXAML PowerToys | Onyx
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Pete O'Hanlon wrote: the only other one I can think of is an OutOfMemoryException.
I'm sure I've got code that catches those? 
It definitely isn't definatley
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well here's one mysterious
<br />
try {<br />
IPerson oPerson = ISession.Get(....);<br />
...<br />
oSomeProperty = LoadProperty(...);
<br />
oPersom.SomeProperty = null;
oPerson.SomeProperty = new PersonProperty(...);
oPerson.SomeProperty = oSomeProperty; oPerson NOT NULL!!<br />
<br />
<br />
} catch(Exception ex)<br />
{<br />
Console.WriteLine("Tell me everything..."); Exception? try-catch never caught it?!<br />
}<br />
<br />
class Person<br />
{<br />
protected PersonProperty _SomeProperty = null;<br />
...<br />
public PersonProperty SomeProperty<br />
{ <br />
get { return _SomeProperty; }<br />
set {<br />
_SomeProperty = value; << Actually it crashed right here.<br />
}<br />
}<br />
...<br />
}<br />
no clue - even if it was a stackOverflowException Visual Studio will tell me. But this one, I step as close to problem as I could by tracking it down to SomeProperty setter in Person class. I can't go lower - I don't have .NET source code!
dev
modified on Wednesday, April 1, 2009 5:25 AM
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