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I want to write a dll file in .net
when i write the dll file and add reference to the project.
I can simply see the whole contents of dll files.while debugging
My question is that i want to write dll file such that no one can see its contents or methods defination. just can use the methods of dll files.
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You need to use obfuscation.
Here[^] is a list of obfuscators that you could consider using.
Note that even obfuscation is not a 100% secure way and users can still view your code.
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Consider this. Suppose no one can see the contents, how does your computer know what to do with it? That could sort of be done, with asymmetric key cryptography, but let's hope that never happens. If people can't read your code, then how will viruses get caught? (on the other hand, how would you find an exploit?) How will backdoors be detected?
Because of the extreme value of the key (at least hundreds of millions, perhaps billions - remember, every virus writer and every government is going to want it), significant resources will be poured into cracking it, ranging from brute-forcing it with super-computers to inspecting the physical circuitry with electron microscopes to going after the source of the key with hacks / actual cloak-and-dagger spies.
It won't be safe for long.
This is not a scenario anyone should want. The only party that actually benefits from it is the one who finds the key. Everyone else loses.
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What are you on about, the guy just wants to protect his code (naive I know but understandable).
Never underestimate the power of human stupidity
RAH
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Just exploring the hypothetical scenario of protectable code.. I hope he (or anyone else who reads it) never thinks of it as a Good Thing again.
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I Want that My logic in my dll file should be hidden just.
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There's no need to shout. However, a point to consider - it's pretty much impossible to hide your logic. If someone is determined enough, they will be able to get access to it. Even obfuscation only does so much - one of the biggest weaknesses of managed languages is the ease with which they can be reverse engineered.
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Then don't use a managed language in .NET. This includes F#, C#, VB.NET, ...
Use C/C++ and it'll compile to a native code library. This STILL won't protect your logic but it will make it much more difficult to reverse engineer over going with managed code.
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Hello
Does anybody know useful links in order to download sample code :
.net and sedna xml database & exist-db?
Many thanks.
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Thanks , But i need sample code and crud operation.
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Then I am afraid that you will have to go and search for it yourself; we don't know what code you are looking for.
Veni, vidi, abiit domum
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I have problem regrading C# to PHP communication. I have read many old posts here and after that i came to conclusion that i have to Use PHP SOAP Web service on server side to get interaction with c#.
Here is the code which i tried:
//webservice.php
configureWSDL('webservice', 'urn:webservice');
$server->register('getMessage',array('msg'=>'xsd:string'),array('return'=>'xsd:null'));
$HTTP_RAW_POST_DATA = isset($HTTP_RAW_POST_DATA)? $HTTP_RAW_POST_DATA : '';
$server->service($HTTP_RAW_POST_DATA);
?>
//notify.php which containing function which is registered with webservice
//member.php getting message and displaying it. This will be message i want from C# code when ever i //click the button.
In 2nd part in Visual Studio 2012 i added web service reference of WSDL file correctly, and written following code for a button.
//c# code
private void button1_Click(object sender, EventArgs e)
{
localhost.webservice src = new localhost.webservice();
src.getMessage("Hello");
}
But when ever i click button and i saw member.php page nothing happens.????????
Still it showing "temp". I want this "Hello" should be shown whenever i click button.
Any help please?? I am worried wasted my whole week to learn this and now have limited time for my project. I shall be very thankful to you.
Regards,
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Hi, I am making a software,in that want to change month of a datetimepicker using a textbox.
i.e. as i put 15 in textbox the value of the month of a datetimepicker is increased by 15months.
like current date is 05/10/2013
and when i put 15 in a text box...the value of datetimepicker is increased by 05/01/2015.
thanks..
waiting for your reply..
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In the code that handles the change value event (you do not say what your UI is so I can't guess) you increment the datetimepicker value by textbox.text value in months
datetimepicker.value.addmonths((int)TextBox.Text)
[edit] Alright, alright use parse ot tryparse to convert the text value to an int! [/edit]
Never underestimate the power of human stupidity
RAH
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You low on caffeine Mycroft? 
You can't cast a string to an int - the compiler won't let you... 
The only instant messaging I do involves my middle finger.
English doesn't borrow from other languages.
English follows other languages down dark alleys, knocks them over and goes through their pockets for loose grammar.
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Middle of the afternoon, hot sun, excellent bottle of white, should leave the bloody computer alone. Thank you for the redirection.
Never underestimate the power of human stupidity
RAH
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Middle of the morning, p*ssing down, pint glass of water... 
The only instant messaging I do involves my middle finger.
English doesn't borrow from other languages.
English follows other languages down dark alleys, knocks them over and goes through their pockets for loose grammar.
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Try:
int months;
if (int.TryParse(myTextBox.Text, out months))
{
myDateTimePicker.Value.AddMonths(months);
}
The only instant messaging I do involves my middle finger.
English doesn't borrow from other languages.
English follows other languages down dark alleys, knocks them over and goes through their pockets for loose grammar.
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We have a managed C# DLL registered for COM interop. This DLL can be called from either a managed or unmanaged application where the customer can control the size and position of the DLL. In our demo application, we use the following win32 API functions to call the DLL. The problem we're running against is that we're losing mouse functions on toolstrip menu items after clicking in the form, even though the hot keys will still work using the keyboard. All controls work initially until clicking on the title bar (which I omitted) or certain controls on the main form.
[DllImport("user32.dll")]
public static extern IntPtr SetParent(IntPtr hWndChild, IntPtr hWndNewParent);
[DllImport("user32.dll", SetLastError = true)]
public static extern bool MoveWindow(IntPtr hWnd, int X, int Y, int nWidth, int nHeight, bool bRepaint);
[DllImport("user32.dll", SetLastError = true)]
static extern IntPtr FindWindow(string lpClassName, string lpWindowName);
private void btnAdopt_Click(object sender, EventArgs e)
{
hWndDocked = (IntPtr)FindWindow(null, "DLL-Title";);
hWndOriginalParent = SetParent(hWndDocked, this.Handle);
MoveWindow(hWndDocked, 125, 25, iWidth, iHeight, true);
}
Some of the DLL dropdowns we can make work by changing the Parent Handle below in close event:
SetForegroundWindow(Global.ParentHandle);
Hopefully my explanation is clear, but has anyone run across this problem? Is there a better way of setting and controlling the DLL handles without losing certain mouse functionality? How can I make this work or what am I doing wrong?
Thanks in Advance,
Rick
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It's difficult to tell exactly what you are doing, but if you are changing the parent of an active window that could quite easily mean that all mouse clicks are being redirected to the wrong window.
Veni, vidi, abiit domum
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Hi Richard,
Thanks for your reply! Our self contained DLL application is called from a client's application that needs to be run within their "form/app". In my Demo, I set their app as the parent by using SetParent win32 API, but then I lose the mouse clicks on several controls. So your description in your reply appears to be accurate.
Most of our controls are now working by using the win32 API, SetForegroundWindow(ParentForm.Handle), switching the handle of our form to their app handle, in the click events of the user controls; buttons, combobox, panels, grids, etc.
I still have a problem when clicking on a disabled button/control. Actually, every mouse click needs to be trapped and handled.
How do you get the mouse click of a disabled control?
Or is there a better way of doing this?
Thanks,
Rick
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I'm not sure I understand what this is all about, there is no such thing as a self contained DLL application. A DLL is a library that provides classes and/or functions for an executable application. Also your description does not really explain what services your DLL provides to the client application, or why you are trying to switch around owners of windows.
RickiB wrote: How do you get the mouse click of a disabled control?
You don't; it is disabled in order to prevent it receiving input.
Veni, vidi, abiit domum
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Hi, I am developing an application which has a WebBrowser control.
By default WebBrowser uses Internet Explorer rendering engine.
Can we change it to Firefox or Google Chrome?
Thanks
Sai
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