Re: How to achieve successful Encryption in VC++ (using cryptoAPI)and decryption in C#.NET - C# Discussion Boards

Re: UrlEncode in Windows Form

sreejith ss nair27-Jul-05 1:30

sreejith ss nair

27-Jul-05 1:30

Add System.Web.dll using Refrence folder context menu. And then try to refer in your application
Using System.Web;

private void button1_Click(object sender, System.EventArgs e)<br />
{<br />
MessageBox.Show(System.Web.HttpUtility.HtmlDecode("http://www.codeproject.com"));<br />
}<br />

Sreejith Nair
[ My Articles ]

Get an object name in any event

Rizwan Bashir27-Jul-05 0:41

Rizwan Bashir

27-Jul-05 0:41

Hello there
I am new in CSharp. I created a doubleClick event and attached it with multiple controls. Now I want to get the name of the control when user double clicks. in the event I have Sender as object and when I write Sender.Name or any other property it gives error that Object Does not Contain the definition of Name. Please Guide me how to get the name or how to convert the object into the required control. for eg panel control.

Rizwan Bashir

Re: Get an object name in any event

sreejith ss nair27-Jul-05 1:13

sreejith ss nair

27-Jul-05 1:13

Try to cast your 'sender' to you known type.
Eg:

private void Form1_DoubleClick(object sender, System.EventArgs e)<br />
	{<br />
		Form frm=sender as Form;<br />
		if(frm!=null)//casting is success<br />
		MessageBox.Show(frm.Name);<br />
	}

Sreejith Nair
[ My Articles ]

Re: Get an object name in any event

S. Senthil Kumar27-Jul-05 3:28

S. Senthil Kumar

27-Jul-05 3:28

Just cast it to Control, it should work. Unless you are firing events and providing some other object as the sender.

Regards
Senthil
_____________________________
My Blog | My Articles | WinMacro

How to achieve successful Encryption in VC++ (using cryptoAPI)and decryption in C#.NET

ameysp27-Jul-05 0:03

ameysp

27-Jul-05 0:03

Hello All,
I am currently working in Honeywell and developing Licensing Utility .
I am in a stage where I want to decrypt a previously encrypted file in VC++ in C# i.e. file encrypted in VC++ using windows cryptAPI and to be decrypted in C# . The problem is that in VC++ we create hash using CryptCreateHash , then add to it secret password using CryptHashData and then derive session key based on tht has hash key . The session key is further used for encryption and decryption .
In C# , I found the basic encryption / decryption classes , setting of IV , key etc but I did find anything related to the hash key . In VC++ we are using RC2 for cryptography of plaintext and MD5 for hash key .
Pls helpme out guys !

Re: How to achieve successful Encryption in VC++ (using cryptoAPI)and decryption in C#.NET

sreejith ss nair27-Jul-05 1:44

sreejith ss nair

27-Jul-05 1:44

Please go through the url. Hope that will give you some ideas.
CryptAPI

Sreejith Nair
[ My Articles ]

Re: How to achieve successful Encryption in VC++ (using cryptoAPI)and decryption in C#.NET

ameysp27-Jul-05 3:24

ameysp

27-Jul-05 3:24

Hey , Those are the links for Cryptography APi in VC++ , actually i'm successfully encrypting in VC++ as well as c# ,but i'm having problems decrypting a file in c# which is previously encrypted in vc++ .
Anyways Thnx for the reply !
Amey

Re: How to achieve successful Encryption in VC++ (using cryptoAPI)and decryption in C#.NET

sreejith ss nair27-Jul-05 1:45

sreejith ss nair

27-Jul-05 1:45

Please go through the url. Hope that will give you some ideas.
CryptAPI
CP List of Cryptography links

Sreejith Nair
[ My Articles ]

Using 2 TopLevel forms

liqnit26-Jul-05 22:53

liqnit

26-Jul-05 22:53

Hello
i hope it desn't sound like a dumb question ..
i have application which i want to have several forms the first one will create the second and will hide and when second is disposed i want to show the first one.

both of them are toplevel forms .
when i try the following code i get an error :"Cannot add a top level control to a control"

Form a1 = new Form2();<br />
<br />
a1.Parent = this;<br />
a1.Show();

any help will do .
i want to be able to unhide the Form1 from form2.

Thanks Confused | :confused:

Have a nice Day

Re: Using 2 TopLevel forms

cshaaaa26-Jul-05 23:29

cshaaaa

26-Jul-05 23:29

Create a new constructor for Form2 with a form1 parameter
Form2(Form1 frm1)
{

}
when opening form2, hide form1 and when closing form2 show form1

Re: Using 2 TopLevel forms

liqnit27-Jul-05 0:22

liqnit

27-Jul-05 0:22

thanks a lot
i will try this as soon as possible

Have a nice Day

Re: Using 2 TopLevel forms

cshaaaa27-Jul-05 0:46

cshaaaa

27-Jul-05 0:46

Good

Re: Using 2 TopLevel forms

liqnit27-Jul-05 0:58

liqnit

27-Jul-05 0:58

WORKS GREAT Wink | ;)

Have a nice Day

String is not in correct format

lovelylooney26-Jul-05 22:52

lovelylooney

26-Jul-05 22:52

Hello All,

I have 2 text boxes for User Name and Password. After I enter User Name and Password and try to validate. The below code throws the error "Input String is not in correct format" for password field.

string sSQL = "SELECT USR_Password FROM Users WHERE USR_LogonID = '" + userName + "'";
cmd = new OdbcCommand(sSQL, con);
cmd.Parameters.Add( "@userName", OdbcType.NVarChar, 8 );
cmd.Parameters["@userName"].Value = userName;

// Execute command and fetch pwd field into lookupPassword string.
lookupPassword = (string) cmd.ExecuteScalar();
lookupPassword = System.Convert.ToString(lookupPassword).Trim();

Could anyone please tell me what is wrong with the code...

Thanks in advance

Re: String is not in correct format

S. Senthil Kumar26-Jul-05 23:52

S. Senthil Kumar

26-Jul-05 23:52

Your SQL string itself has the complete query. You need to remove the cmd.Parameters.Add statement or change the SQL string to "SELECT USR_Password FROM Users WHERE USR_LogonID = @userName".

The second approach is the recommended one, as it helps prevent SQL injection attacks and enclosing strings in single quotes..

Regards
Senthil
_____________________________
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Array Sorting

diniya9926-Jul-05 22:46

diniya99

26-Jul-05 22:46

How to Sort the array in descending order

Dinesh

Re: Array Sorting

C0d3_P03t26-Jul-05 22:53

C0d3_P03t

26-Jul-05 22:53

what type of values?
numerical or alphabetical?

It's Never too late to Start or to try again

Re: Array Sorting

S. Senthil Kumar26-Jul-05 23:54

S. Senthil Kumar

26-Jul-05 23:54

Did you try using the Array.Sort method?

Regards
Senthil
_____________________________
My Blog | My Articles | WinMacro

MSMQ events

C0d3_P03t26-Jul-05 21:58

C0d3_P03t

26-Jul-05 21:58

Hi everyone

Is there any way to check a queue's status to see if any message has been written in? Sort of an alert message that a new message has been inputted , but with out taking the actual message off from the queue.

Thanks
Luke

Its never late

memory drive

farzad000126-Jul-05 21:03

farzad0001

26-Jul-05 21:03

I have new format for get a image from CD/DVD(same .nrg for nero).
but I want a drive for test CD/DVD image(C# or VC 7.0).
CAN YOU HELP ME?

Extension File .vsi

Brendan Vogt26-Jul-05 21:02

Brendan Vogt

26-Jul-05 21:02

Hi,

I downloaded the new starter kits for Visual Web Developer and they end in .vsi, and I don't seem to have a program that recognises this extension. Can someone please advise where I can download this program? And is it free?

Cheers.

wat shd i do 1st?

nidhelp26-Jul-05 21:01

nidhelp

26-Jul-05 21:01

hi
rite now im lost in my project.. i've to set some conditions to the program. say i got to enter a string of 9 letters + numbers >> x1234567y OR 12 numbers >> 111111111111 before hitting the ok button (this button will direct me to another form if i keyed in correctly). the system will do a pop-up box telling u if u had keyed in an invalid no, that is not 9 letters + numbers nor 12 numbers.

im thinking, wat should i do first? to set the conditions or link the button in form 1 to form 2 first?

thz so much!

Re: wat shd i do 1st?

tatchung26-Jul-05 21:11

tatchung

26-Jul-05 21:11

Hi!
I'm quite new to this programming business but i'l try my best to help...

Logically I think it would be better to set the link first so that you can do the conditions by means of trial and error.

Though possibly your target output cannot still be met you'd still have the luxury of knowing that the link button works. So fitering out the error wouldn't be much of a problem...

Hope I was of some help! Big Grin | :-D

Kampai!

Re: wat shd i do 1st?

nidhelp26-Jul-05 22:26

nidhelp

26-Jul-05 22:26

ok. sure i'll do juz dat. den i'll c how it goes from there.. thz =)

Re: wat shd i do 1st?

sreejith ss nair27-Jul-05 1:22

sreejith ss nair

27-Jul-05 1:22

private void button1_Click(object sender, System.EventArgs e)<br />
		{<br />
			if(Validate(textBox1.Text))<br />
			{<br />
				Form2 frm =new Form2();<br />
				frm.Show();<br />
			}<br />
			else<br />
			{<br />
				//show your popup window which contain "invalid input" information<br />
			}<br />
			<br />
		}<br />
		private bool Validate(string Val)<br />
		{<br />
			if(Val!="")<br />
			{<br />
				if(Val.Length==9||Val.Length==12)<br />
					return true;<br />
				else<br />
					return false;<br />
			}<br />
			else<br />
				return false;<br />
		}

Sreejith Nair
[ My Articles ]

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