Re: C# program to recover data - C# Discussion Boards

Re: Generics problem

kapax53-Aug-10 4:37

kapax5

3-Aug-10 4:37

You see, if I instantiate this class like this:

new GenericClass<Int32[]>();

,
then what xxx() returns is List<Int32[]>, although it should return List<Int32>.

Now, if I instantiate the class this way:

new GenericClass<List<Int32>>();

,
then xxx() will return List<List<Int32>>, but it should also return List<Int32>.

That is why I think that IEnumerable is the way to go for T.

I am starting to think that my idea is conceptually wrong, since I cannot think of anything that would work.

Re: Generics problem

DaveyM693-Aug-10 4:40

DaveyM69

3-Aug-10 4:40

Your problem is you need T to be the type of element, not a collection of so your IEnumerable idea isn't going to work.

I think you need something like this:

public class GenericClass<T>
{
    private List<T> a = null;

    public GenericClass(IEnumerable<T> items)
    {
        if (items != null)
            a = new List<T>(items);
    }

    public List<T> Xxx()
    {
        return a;
    }
}

Dave

If this helped, please vote & accept answer!

Binging is like googling, it just feels dirtier.
Please take your VB.NET out of our nice case sensitive forum.(Pete O'Hanlon)

BTW, in software, hope and pray is not a viable strategy. (Luc Pattyn)

Re: Generics problem

kapax53-Aug-10 4:42

kapax5

3-Aug-10 4:42

Yes, that's what I needed! Simple and elegant. Thank you!

Re: Generics problem

DaveyM693-Aug-10 4:44

DaveyM69

3-Aug-10 4:44

You're welcome Smile | :)

Dave

If this helped, please vote & accept answer!

Binging is like googling, it just feels dirtier.
Please take your VB.NET out of our nice case sensitive forum.(Pete O'Hanlon)

BTW, in software, hope and pray is not a viable strategy. (Luc Pattyn)

View Desktop of another pc using C# program

ayandelhi3-Aug-10 3:15

ayandelhi

3-Aug-10 3:15

Hi!!

Can we make a program which can access the display of a pc from another... just see the desktop(not manipulate it)...

Re: View Desktop of another pc using C# program

Dave Kreskowiak3-Aug-10 4:13

Dave Kreskowiak

3-Aug-10 4:13

It's the same as doing it with the manipulation capability. You need to have 2 apps. One running on your monitor machine that shows you what's on the remote desktop and an app running on the remote desktop that puts the screen view together and sends it to your monitoring workstation. Google for "C# VNC" and you'll find examples and libraries.

A guide to posting questions on CodeProject[^]

Dave Kreskowiak

C# program to recover data

ayandelhi3-Aug-10 2:11

ayandelhi

3-Aug-10 2:11

Hi!!

M back...
i really need to understand the concept of data recovery...
can we make any program which can do data recovery using C#???

Thanks...

Re: C# program to recover data

AhsanS3-Aug-10 2:53

AhsanS

3-Aug-10 2:53

Concept of data recovery is hard to explain here. In short for writing a sw in c#
you have to wrap low level API's. Not directly possible.

Ahsan Ullah
Senior Software Engineer
MCTS 2.0

Re: C# program to recover data

ayandelhi3-Aug-10 3:16

ayandelhi

3-Aug-10 3:16

How shud i do it???

Re: C# program to recover data

Dave Kreskowiak3-Aug-10 4:11

Dave Kreskowiak

3-Aug-10 4:11

What you do and how you write it depends on exactly what you're trying to recover and the device you're trying to recover it from as well as the condition that it's in. You haven't specified what you mean by "data recovery", therefore, it's impossible to tell you what you have to do or if it's even possible to write in C#.

A guide to posting questions on CodeProject[^]

Dave Kreskowiak

Re: C# program to recover data

ayandelhi4-Aug-10 4:38

ayandelhi

4-Aug-10 4:38

I want to know if a can recover deleted data from a IDE/SATA HDD, using a c# program....

Do i need to know abt ASM to do it???

often an corrupt hdd is sent for replacement, n the data is lost... cant we make any program or such thing which can recover data from a drive to another(good ) drive...

Re: C# program to recover data

Dave Kreskowiak4-Aug-10 15:00

Dave Kreskowiak

4-Aug-10 15:00

You don't need ASM to do it. You just need to have a VERY GOOD knowledge of how the internals of NTFS works, how files are actually deleted, how a disk is organized, and how to read wirte secotrs on the disk.

A guide to posting questions on CodeProject[^]

Dave Kreskowiak

how to disable selection in context menu

NarVish3-Aug-10 2:02

NarVish

3-Aug-10 2:02

Hi,

I've a context menu with two levels. I would like to disable selection in second level. To describe in detail,
level-1->Level-2
AAAAAAA->aa1
aa2
aa3
BBBBBBB->bb1
bb2
bb3

If I select items(AAAAAAA,BBBBBBB) in Level 1, level-2 items gets pop-up. I should disable the selection in Level-2. Please let me know how to achieve this. Thanks in advance.

Re: how to disable selection in context menu

OriginalGriff3-Aug-10 2:18

OriginalGriff

3-Aug-10 2:18

Use the ContextMenu.ContextMenuOpening event http://msdn.microsoft.com/en-us/library/bb613568.aspx[^]

Real men don't use instructions. They are only the manufacturers opinion on how to put the thing together.

Re: how to disable selection in context menu

EliottA3-Aug-10 2:18

EliottA

3-Aug-10 2:18

Wouldn't you use the Enabled property on your sub items to achieve this behavior?

Check out the CodeProject forum Guidelines[^]
The original soapbox 1.0 is back![^]

validate the project

suppot1233-Aug-10 1:25

suppot123

3-Aug-10 1:25

I am working on C# windows application. and i have a problem in

How can i make my project to run for some speacific period of time.

I mean to say that if any one lounch a software then they provide every one the trial version of their software. Like that Is it is possible to make some small project to run for time limit for one month. if yes please tell me how to do it.

support123 Frown | :(

Thank u in advance

Re: validate the project

R. Giskard Reventlov3-Aug-10 1:38

R. Giskard Reventlov

3-Aug-10 1:38

Start here: SmartAssembly™[^].

"If you think it's expensive to hire a professional to do the job, wait until you hire an amateur." Red Adair.
nils illegitimus carborundum

me, me, me

unable to conect to database

Nikhil Bhivgade3-Aug-10 0:28

Nikhil Bhivgade

3-Aug-10 0:28

i have created an application in C# which in working fine on local machince(XP)
but when i install that program on network it is unable to conect to database

through error
System.NullReferenceException: Object reference not set to an instance of an object.
at QualiChem.PartyDetails.PartyDetails_Load(Object sender, EventArgs e)
at System.Windows.Forms.Form.OnLoad(EventArgs e)
at System.Windows.Forms.Form.OnCreateControl()
at System.Windows.Forms.Control.CreateControl(Boolean fIgnoreVisible)
at System.Windows.Forms.Control.CreateControl()
at System.Windows.Forms.Control.WmShowWindow(Message& m)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ScrollableControl.WndProc(Message& m)
at System.Windows.Forms.ContainerControl.WndProc(Message& m)
at System.Windows.Forms.Form.WmShowWindow(Message& m)
at System.Windows.Forms.Form.WndProc(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

************** Loaded Assemblies **************
mscorlib
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.42 (RTM.050727-4200)
CodeBase: file:///C:/WINDOWS/Microsoft.NET/Framework/v2.0.50727/mscorlib.dll
----------------------------------------

ans so on

i am working in a network of 5 pc interconnected all pc having windows Xp
what should i do.
plz help

Re: unable to conect to database

Ghazanfar Jawed3-Aug-10 1:03

Ghazanfar Jawed

3-Aug-10 1:03

It seems to be permission issue.

can you post the source code.

____________________________
Ghazanffer Javaid
Software Engineer

Re: unable to conect to database

PIEBALDconsult3-Aug-10 3:20

PIEBALDconsult

3-Aug-10 3:20

Check the connection string.
If SQL Server, check the SQL Server Browser service.
Check the firewall.

If all else fails, use a Web Service.

How to realize the connecting Office visio inside?

sun19882-Aug-10 23:19

sun1988

2-Aug-10 23:19

Do a visio connection function. Also on display in visio drawing.

I use a common way of drawing. But in drawing on don't show. Please help...

Drawing area: is a AxDrawingControl controls.

PInvoke with 32 bit native Dll in windows 7 64 bit

Chesnokov Yuriy2-Aug-10 22:21

Chesnokov Yuriy

2-Aug-10 22:21

What is the problem to run in windows 7 64 bit C# application (compiled on Vista 32 bit VS2008 .NET 3.5) which uses PInvoke to run native function from 32 bit Dll.
Exception is System.BadImageFormatException Attempt to load application having bad format (HRESULT: 0x8007000B)

Чесноков

Re: PInvoke with 32 bit native Dll in windows 7 64 bit

Covean2-Aug-10 22:36

Covean

2-Aug-10 22:36

You can't use a 32 bit dll in an 64 bit application (and vice versa).
I'm not sure about native dlls but I think they behave the same.

Greetings
Covean

Re: PInvoke with 32 bit native Dll in windows 7 64 bit

Mirko19802-Aug-10 22:57

Mirko1980

2-Aug-10 22:57

As Covean said, you can't use a 32bit dll form a 64bit application.

By default, a .NET application run according to the O.S. (so, in a 64bit systems run as 64bit application).
You have to force your application to run as 32bit by changing the "Platfor Target" value in the Build properties of your Visual Studio Project.

Re: PInvoke with 32 bit native Dll in windows 7 64 bit

Pete O'Hanlon2-Aug-10 23:42

Pete O'Hanlon

2-Aug-10 23:42

If you have a 64 bit .NET application attempting to run a 32 bit DLL, you can change it to run in 32 bit mode by using the corflags command. It's detailed here[^], but basically you need to run

corflags myassembly.exe /32bit+

"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

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.