C# Discussion Boards - CodeProject

MudkiSekhon12-Dec-05 1:27

12-Dec-05 1:27

Hi friends,
Plz suggest me how can i implement checkboxes in listbox in Windows forms application. I want to use checkboxes to select items from the listbox. If possible, plz send me the code.....

Thanks,
Sandeep
+919891027854

Re: Implement CheckBoxes in Listbox?

Polis Pilavas12-Dec-05 2:29

Polis Pilavas

12-Dec-05 2:29

Look for a Windows forms' control called CheckedListBox in your toolbox instead

Regards,
Polis

Can you practice what you teach?

Re: Implement CheckBoxes in Listbox?

MudkiSekhon12-Dec-05 2:40

MudkiSekhon

12-Dec-05 2:40

Thanks for ur reply. Have u any sample code in which u catch the checkboxes that are selected from the CheckedListBox?
I want to select multiple values from tha CheckedListBox....

Regards,
Sandeep
+919891027854

Re: Implement CheckBoxes in Listbox?

Polis Pilavas12-Dec-05 4:41

Polis Pilavas

12-Dec-05 4:41

Yes, take a look below at the following self-explanatory code chunk. First I add three items into the checkedListBox, and then I get the text of the selected ones by looping through each one of them:

string <code>checkedItems </code>= "";

// Add a few items into the checkedListBox control
this.checkedListBox1.Items.Add("Item 1", CheckState.Checked);
this.checkedListBox1.Items.Add("Item 2", CheckState.Indeterminate);
this.checkedListBox1.Items.Add("Item 3", CheckState.Unchecked);

// Retrieve the selected items in a string
for (int i = 0; i < this.checkedListBox1.Items.Count; i++)
{
	if (this.checkedListBox1.GetItemChecked(i))
		<code>checkedItems </code>+= this.checkedListBox1.Items[i].ToString() + "\n";
}

MessageBox.Show(<code>checkedItems</code>);

Regards,
Polis

Can you practice what you teach?

Retreiving and displaying strings...in Treeview

Mahi.Ragava11-Dec-05 23:17

Mahi.Ragava

11-Dec-05 23:17

Thanx senthil...It works...

If the same have to be done in treeview,i can add the firstline strings of the file as Nodes,
From the Nextline ,each element belongs a column..
That is...
"Tic","Tac","Toe"
"1","2","3"
"4","5","6"

Here...Tic ,Tac,and Toe are 3 sep columns and "1","4" belongs to Tic.."2","5" belongs to Tac and "3","6" belongs to Toe...
How to add those as "1","4"etc...as childnodes of "Tic"....

Am in urgent search for this kind of display...Kindly help me...

Logout code..

momoo11-Dec-05 22:30

momoo

11-Dec-05 22:30

Hi, everyone.. I just started learning C# web application not long ago.. I like to enquire that if the user wants to logout of the web page/site, what is the code for the logout command when i click on the logout button?? Sorry as my question is too simple for you guys.. But thanks for the help.. Wink | ;)

Thanks

Re: Logout code..

Dave Kreskowiak12-Dec-05 6:18

Dave Kreskowiak

12-Dec-05 6:18

That all depends on what your using to handle logins. There is no one way of authenticating, tracking, and giving roles to users of your site. How you do the logout depends ENTIRELY on how you designed your authentication package, how your tracking your user sessions, what you need to do when the user logs out, or the session times out.

Without a LOT more detail about your security system, it's impossible for anyone to tell you how to code your logout. That is, other than dropping a button on a form and handling it's click event.

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

Dll Reflector

AB777111-Dec-05 22:22

AB7771

11-Dec-05 22:22

Hi all,

As we all know that the Reflector can be used to show the code written by us in the dll provided by us.

I want to know some way which should block this.
i.d if a dll is given the code should not be displayed

Any links or pointers if known to anyone are most welcome

Thanks and Regards,

Pramod

Re: Dll Reflector

S. Senthil Kumar11-Dec-05 23:06

S. Senthil Kumar

11-Dec-05 23:06

You are looking for .NET Obfuscators[^].

Regards
Senthil
_____________________________
My Blog | My Articles | WinMacro

Re: Dll Reflector

AB777111-Dec-05 23:19

AB7771

11-Dec-05 23:19

Hi,

can you elaborate more
i did not get you
actually i have seen that the dll's code can be viewed using a reflector
and i dont want that to happen with my dlls

Thanks and Regards,
Pramod

Re: Dll Reflector

S. Senthil Kumar11-Dec-05 23:25

S. Senthil Kumar

11-Dec-05 23:25

Did you click on the link I posted? Obfuscation is a technique that is aimed at preventing disassembly, which is what you're looking at.

Regards
Senthil
_____________________________
My Blog | My Articles | WinMacro

Re: Dll Reflector

Jared Parsons12-Dec-05 4:49

Jared Parsons

12-Dec-05 4:49

S. Senthil Kumar wrote:
Obfuscation is a technique that is aimed at preventing disassembly,

It doesn't really prevent disassembly. Rather it helps preventy someone from garning anything useful from the disassembly by obfuscating the code the point that it is no longer easily readable.

Jared Parsons
jaredp@beanseed.org
http://spaces.msn.com/members/jaredp/

Re: Dll Reflector

Dave Kreskowiak12-Dec-05 6:14

Dave Kreskowiak

12-Dec-05 6:14

What you want is not possible. The best you can hope for is to obfuscate the code and hope that the little bastard trying to disassemble it, doesn't have the time to dig your code out of the garbage that the obfuscator creates.

Even if you managed to compile the managed code down to native code, your code can still be disassembled, though it just takes more time to do it.

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

Re: Dll Reflector

S. Senthil Kumar12-Dec-05 15:44

S. Senthil Kumar

12-Dec-05 15:44

I've seen some obfuscators that crash the disassembler, but yes, you're right, the purpose is to make it almost unreadable.

Regards
Senthil
_____________________________
My Blog | My Articles | WinMacro

Retreiving and displaying strings...

Mahi.Ragava11-Dec-05 22:20

Mahi.Ragava

11-Dec-05 22:20

hi friends,

Am having a paragraph which is like....

"Tic","Tac","Toe"
"1","2","3"
"12,"16","11"

Here the first line strings Tic,Tac and Toe are fields...

I have to retreive each of them seperately such that they have to be displayed in a multiline textbox as,
Tic
Tac
Toe....

How can i do it?Kindly help me...

Thanx

-- modified at 4:22 Monday 12th December, 2005

Re: Retreiving and displaying strings...

occcy11-Dec-05 22:27

occcy

11-Dec-05 22:27

i don't know whether i understand your question right...?!
but if your string is "\"Tic\",\"Tac\","\Toe\"" you could use the Split method.

<br />
string s="\"Tic\",\"Tac\","\Toe\"";<br />
string[] fields=s.Split(new char[]{','});<br />

Re: Retreiving and displaying strings...

Mahi.Ragava11-Dec-05 22:35

Mahi.Ragava

11-Dec-05 22:35

Hi friend,

The same way i hav splitted...But i want to display those splitted strings line by line in a Multiline Textbox..

Like,(in a TextBox)

Tic
Tac
Toe

Thanx

Re: Retreiving and displaying strings...

S. Senthil Kumar11-Dec-05 23:07

S. Senthil Kumar

11-Dec-05 23:07

If you've got the split strings, then just use the AppendText method to add them to the textbox. Rember to append System.Environment.NewLine to every split string, like

multiLineTextBox.AppendText(splitString[i] + Environment.NewLine);

Regards
Senthil
_____________________________
My Blog | My Articles | WinMacro

How to Program for Dallas Semi conductor IButton

vhkg11-Dec-05 22:11

vhkg

11-Dec-05 22:11

I had a requirement to use IButton during login process in to my C# Winforms Application can any one help me out how to program for IButton in C#

Krishna

Re: How to Program for Dallas Semi conductor IButton

Tim Paaschen11-Dec-05 22:31

Tim Paaschen

11-Dec-05 22:31

Have a look at http://www.maxim-ic.com/products/ibutton/.
There you can find a SDK and all kind of documentation.

Tim

How can I Create and use Custom Controls ?

Abubakarsb11-Dec-05 22:04

Abubakarsb

11-Dec-05 22:04

i want to create a custom Control in Asp.net by using C# please tell me how can i create it and use it in other applications plz???????????????????????????????????

Regards,

AbuBakar

Re: How can I Create and use Custom Controls ?

Polis Pilavas12-Dec-05 2:32

Polis Pilavas

12-Dec-05 2:32

Try googling it[^]. You'll get loads of results

Regards,
Polis

Can you practice what you teach?

How to add Events in Gatagrid ???

Abubakarsb11-Dec-05 21:34

Abubakarsb

11-Dec-05 21:34

Hello !

I am showing images in Datagrid by using Picturebox,it is working well,Now I want to call some events like pictureBox1_Click and pictureBox1_MouseMove events of picturebox control but i don't know how can i do it?? please send me solution as soon as possible i will be really grateful to u...........

Regards,

AbuBakar

AbuBakar

Re: How to add Events in Gatagrid ???

AB777111-Dec-05 23:22

AB7771

11-Dec-05 23:22

Hi,
It is very simple.
If you are creating the PictureBox at design time then u can just go to the
Properties window -> events tab and select the event that u want to handle

If you are creating them dynamically in the code then
just declare the events and define the methods which will handle the events

Regards,
Pramod

Control inheritance problem

occcy11-Dec-05 21:33

occcy

11-Dec-05 21:33

Hello!
I've an UserControl with a MenuStrip control on it. In a derived control I cannot add additional menu items to this menustrip (in the visual designer).
Is there any advise to solve this problem!?

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