C# Discussion Boards - CodeProject

Re: how to count elements inside an array?

18-May-06 7:10

Use a List<> and read the .Count value.

Guffa18-May-06 9:48

Guffa

18-May-06 9:48

An array doesn't have a concept of unused items. When you create the array all the items are initialized to their default value, for bytes that is zero. So all items are initialized, used, and have valid values.

Either you have to define a special value that means that the item is unused, so that you can test each value, or you have to keep track of which items are used using another variable or array.

Or use a list instead.

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Re: how to count elements inside an array?

donkaiser18-May-06 10:35

donkaiser

18-May-06 10:35

Thx ya'll for the education.

Donkaiser

Do not start application from byte[]

Dima Filipiuk18-May-06 4:40

18-May-06 4:40

I use code:
byte[] arraybyte = System.IO.File.ReadAllBytes("app.exe"); Ok
System.AppDomain dom = System.AppDomain.CreateDomain("newDomain");
dom.Load(arraybyte); not work
do not start.

and use this code:
byte[] arraybyte = System.IO.File.ReadAllBytes("app.exe"); Ok
System.Reflection.Assembly.Load(arraybyte); not work
How it need work?
Help please.

leppie18-May-06 5:24

leppie

18-May-06 5:24

Is app.exe a .NET exe? If not, you cant do that.

xacc.ide-0.1.3.14 - Now with syntax support for PowerShell
xacc.ide-0.1.3.13 source code

Dima Filipiuk18-May-06 7:43

18-May-06 7:43

app.exe is a .NET .
I don't know how to do next step.
Application .Net do not start from byte[].
Please help me.

Rei Miyasaka18-May-06 10:00

18-May-06 10:00

Is there a reason you couldn't just call System.Diagnostics.Process.Start() ?

Dima Filipiuk18-May-06 11:01

18-May-06 11:01

Class System.Diagnostics.Process.Start() need String type
But my application in byte[].
I don't start my application from hard disk.
My application in memory.

Rei Miyasaka18-May-06 11:31

18-May-06 11:31

byte[] arraybyte = System.IO.File.ReadAllBytes("app.exe");
System.AppDomain dom = System.AppDomain.CreateDomain("newDomain");
Assembly assembly = dom.Load(arraybyte);
assembly.EntryPoint.Invoke(null, null);

That calls the Main() method.

Dima Filipiuk18-May-06 20:28

18-May-06 20:28

I run this code.
byte[] arraybyte = System.IO.File.ReadAllBytes("app.exe");
System.AppDomain dom = System.AppDomain.CreateDomain("newDomain");
Assembly assembly = dom.Load(arraybyte);
assembly.EntryPoint.Invoke(null, null);
But in line
assembly.EntryPoint.Invoke(null, null);
have runtimeerror:
"TargetInvocationException was unhandled
Exception has been thrown by the target of an invocation."
Please help me!

Rei Miyasaka18-May-06 20:32

18-May-06 20:32

Read the exception's InnerException. That'll tell you the actual error.

Dima Filipiuk18-May-06 22:49

18-May-06 22:49

My code :
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Net;
using System.IO;
using System.Reflection;

namespace video
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
try
{
byte[] arraybyte = System.IO.File.ReadAllBytes("D:/work/C#/video/video/bin/Debug/zshchita.exe");
System.AppDomain dom = System.AppDomain.CreateDomain("newDomain");
Assembly assembly = dom.Load(arraybyte);
assembly.EntryPoint.Invoke(null, null);
}
catch (Exception e)
{
string st = e.InnerException.ToString();
}
}
}
}
st :
System.InvalidOperationException: SetCompatibleTextRenderingDefault must be called before the first IWin32Window object is created in the application.
at System.Windows.Forms.Application.SetCompatibleTextRenderingDefault(Boolean defaultValue)
at video.Program.Main() in D:\work\C#\video\video\Program.cs:line 16

Program.cs :
using System;
using System.Collections.Generic;
using System.Windows.Forms;

namespace video
{
static class Program
{
///

/// The main entry point for the application.
///

[STAThread]
static void Main()
{
Application.EnableVisualStyles();
line 16 Application.SetCompatibleTextRenderingDefault(false);
Application.Run(new Form1());
}
}
}
???
Please help me!

-- modified at 4:51 Friday 19th May, 2006

Rei Miyasaka18-May-06 23:12

18-May-06 23:12

I can't run that since I have neither the other portion of the form nor zshchita.exe, but just judging from the exception, it looks like you have to remove the line that calls Application.SetCompatibleTextRenderingDefault from zshchita.exe. It's probably in Main().

Dima Filipiuk19-May-06 0:27

19-May-06 0:27

My be out of memory?
Any application i was run in TotalComander and Ok result.
But from my application is error.
If this veri hard then stop this idea?
I don't know how to do this.
But i was veri wont to do this!
God bless you. He leves you veri mach.

Rei Miyasaka19-May-06 0:34

19-May-06 0:34

I'm pretty sure you can fix it by deleting the Application.SetCompatibleTextRenderingDefault() from the other exe.

Dima Filipiuk19-May-06 1:03

19-May-06 1:03

i deleting this but problem don't go out.
Next message was this :
System.InvalidOperationException: Starting a second message loop on a single thread is not a valid operation. Use Form.ShowDialog instead.
at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
at System.Windows.Forms.Application.Run(Form mainForm)
at Bblank.Program.Main()

Rei Miyasaka19-May-06 1:13