Re: merge two files in a file - C# Discussion Boards

Re: [2.0] a few read/writeprocessmemory questions

games guru6-Jul-07 16:01

6-Jul-07 16:01

Could you give me a link to something that could help me with reading/writing to pointers? Or whatever it is that I am exactly talking about. Thanks...

Re: [2.0] a few read/writeprocessmemory questions

Luc Pattyn6-Jul-07 16:38

Luc Pattyn

6-Jul-07 16:38

whatever clever addressing modes have been defined, you must implement them
yourself. The only basic operations are read direct (i.e. from a given address)
and write direct. All indirections, double indirections, offsets, indexing,
have to be programmed from that, step by step, unlike assembly code
where they exist as basic functionality to improve code density and execution time.

Of course there is nothing that stops you from putting complex addressing modes
in separate methods; example: IntPtr eaOffsetIndirect(IntPtr base, int ofs) could
use base, read an int thru it, add offset, and return that as an IntPtr, so
the caller can immediately operate on the intended operand.

Before you ask, yes you could write a native code function that performs any
complex addressing scheme your CPU provides, but calling it (which requires
P/Invoke to cross the managed/unmanaged boundary) is likely to cause more
overhead than executing it step-by-step in a higher-level language (such as C#).

Smile | :)

Luc Pattyn

[My Articles] [Forum Guidelines]

Re: [2.0] a few read/writeprocessmemory questions

games guru6-Jul-07 16:46

games guru

6-Jul-07 16:46

The problem for me is that I can't use assembly for this application, I need to do some other things such as sending keystrokes, mouse commands, moving the mouse, checking global hotkeys, and I've already written 80% of the code...so I'd like to finish it in C#...it's not a very large application so I'm not worried about causing too much clutter, and I'm only reading two pointers. So I'd like some more info on it PLEASE KTHX!;)

Re: [2.0] a few read/writeprocessmemory questions

Luc Pattyn6-Jul-07 17:03

Luc Pattyn

6-Jul-07 17:03

Communicating with another process takes one of three routes:

- use an appropriate CLR class, when available; no warries here
- for simple things: use an existing Win32 function, call it with P/Invoke;
works fine as long as the function does not need pointers (so SetWindowText
is fine, SendMessage may be fine depending on the message code, i.e. do
wParam/lParam hold values or pointers ?)
- for complex things: allocate memory in the other process (this requires the
use of several Win32 functions such as VirtualAllocEx), transfer data
to/from your process address space from/to the other process' address space
(using ReadProcessMemory or WriteProcessMemory), and call the intended
Win32 function (all in appropriate order!). There are some examples of this
on CodeProject, at least one article describes a C++ class that facilitates
this; I wont repeat it all.

What you were talking about before (offset indirect addressing and the like) is
not applicable to the above; at most data is read/written somewhere, and a
pointer (a real one, not something fancy) to it gets passed back/forth.

Smile | :)

Luc Pattyn

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merge two files in a file

WhiteGirl236-Jul-07 3:58

WhiteGirl23

6-Jul-07 3:58

Hi,
Can you tell me how to import a file in other file?
thanks.

Re: merge two files in a file

BoneSoft6-Jul-07 4:07

BoneSoft

6-Jul-07 4:07

What types of files? What do they contain? How do you want to 'merge' them? Are they text files and you want to append one to the other? Need more information.

Try code model generation tools at BoneSoft.com.

Re: merge two files in a file

Colin Angus Mackay6-Jul-07 4:07

Colin Angus Mackay

6-Jul-07 4:07

Depends on the format of the file. Would you like to tell us more about these files?

Upcoming events:
* Glasgow: Mock Objects, SQL Server CLR Integration, Reporting Services, db4o, Dependency Injection with Spring ...

"I wouldn't say boo to a goose. I'm not a coward, I just realise that it would be largely pointless."

Ready to Give up - Your help will be much appreciated.

My website

Re: merge two files in a file

Christian Graus6-Jul-07 4:09

Christian Graus

6-Jul-07 4:09

Adding to what the others said, while it's true that, for example, merging two XML files is not as simple as appending one to the other, it's also true that it's not possible to append a file at all, no matter what, you need to read your two files, merge them in memory and write them back out, either overwriting one of your existing files, or to a new file.

Christian Graus - Microsoft MVP - C++

"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )

Re: merge two files in a file

Martin#6-Jul-07 7:32

Martin#

6-Jul-07 7:32

I'm allways surpriesed how there can be no reacton from the one who has a problem, after a response 9 minutes later.

But maybe it's because the question had no "urgent" in the subject line!

All the best,

Martin

Re: merge two files in a file

Colin Angus Mackay6-Jul-07 9:18

Colin Angus Mackay

6-Jul-07 9:18

Martin# wrote:
I'm allways surpriesed how there can be no reacton from the one who has a problem, after a response 9 minutes later.

It just goes to show you that too many people haven't got even the most basic of manners. Possibly they found the answer but just don't have the common courtesy to respond back to say they've got a solution. Or they really don't understand their own problem and are embarrased that they can't articulate themselves.

Martin# wrote:
But maybe it's because the question had no "urgent" in the subject line!

Just like this one[^] Roll eyes | :rolleyes:

Re: merge two files in a file

snorkie6-Jul-07 4:11

snorkie

6-Jul-07 4:11

using (StreamWriter sw = new StreamWriter(@"C:\file1.txt")
{
using (StreamReader sr = new StreamReader(@"c:\file1.txt")
{
sw.Write(sr.ReadToEnd);
}
}

Simple solution for text files...

Hogan

Re: merge two files in a file

Luc Pattyn6-Jul-07 4:20

Luc Pattyn

6-Jul-07 4:20

using (StreamReader sr = new StreamReader(@"c:\file2.txt")<br />
{<br />
    File.AppendAllText(@"c:\file1.txt", sr.ReadToEnd());<br />
}

Luc Pattyn

[My Articles] [Forum Guidelines]

Re: merge two files in a file

Jimmanuel6-Jul-07 4:46

Jimmanuel

6-Jul-07 4:46

File.AppendAllText("file1.txt", File.ReadAllText("file2.txt"));

Re: merge two files in a file

Luc Pattyn6-Jul-07 5:01

Luc Pattyn

6-Jul-07 5:01

Nice; a real compact framework would offer
File.Append("file1.txt", "file2.txt");

Luc Pattyn

[My Articles] [Forum Guidelines]

Re: merge two files in a file

Jimmanuel6-Jul-07 5:12

Jimmanuel

6-Jul-07 5:12

Those lazy Microsoft bastards!!! Why haven't they thought of everything yet!?!?!

Re: merge two files in a file

WhiteGirl236-Jul-07 20:14

WhiteGirl23

6-Jul-07 20:14

thank you for helping me

SqlDataSourceQuery.Select

dboy2216-Jul-07 3:38

dboy221

6-Jul-07 3:38

I have a SqlDataSource on my page that calls a stored procedure that returns the id of a particular record. I am trying to taked the returned id and store that into an integer or string that will be used as a query string for the next page of processing for this record. I'm not exactly sure how to return the value when running SqlDataSource.Select(DataSourceSelectArguments.Empty). Being that SqlDataSource.Select is an enumerator, I cannot return to int or string (even after doing datatype conversion). I'm not quite sure if I can do this, but guidance would definitely be a help. I have shown the code below. Thanks in advance to those below.

//album_id is the string or int to hold returned id from stored proc
albumid;
albumid = SqlDataSource2.Select(DataSourceSelectArguments.Empty);

I am making C# program that interacts with webpage.get js val exec js function

(kcd)6-Jul-07 3:36

(kcd)

6-Jul-07 3:36

I have no idea how to return value that is in js.
I have the website script suchvar zCHAR_ID=0, fCHAR_NAME=2, tCHAR_CLASS=3,
I want to know what they equal in my C# program.

Now my problems I'm having.
I have two webbrowser because they both have diffrent funtions.
one is axWebBrowser1 other is normal webBrowser
webBrowser1.Document.InvokeScript("todo");
how can I do that with axWebBrowser1 so i can delete the webbrowser form?
I know there are more problems but I can't bother without this fixed.

Generate AxInterop files

Laurent.iss6-Jul-07 3:29

Laurent.iss

6-Jul-07 3:29

Can anyone tell me what is the difference between Interop and AxInterop ?
To generate an Interop I simply select it from regeistred COM or BROWSE in Add reference.
I cannot do it for ActiveX. Why ?

Laurent

Update designer after updating a property

Christopher Stratmann6-Jul-07 3:06

Christopher Stratmann

6-Jul-07 3:06

I have a custom control with a custom property. After compiling the project I place my custom control onto a windows form in VS2005. From there I change my custom property on that custom control. The problem is that the custom control doesn't repaint on the designer to show my updated change. The following is the only way I have found to make the control repaint. Invalidate() after _Test = value; doesn't work. I also looked into the System.ComponentModel namespace for something to be placed before public int Test like [Browsable(true)] but didnt find anything. I tried [RefreshProperties(RefreshProperties.Repaint)] but I think that only repaints the properties grid and not the control on the designer. Any ideas???

private int _Test = 0;
public int Test
{
   get { return _Test; }
   set
   {
      _Test = value;
      Width--;
      Width++;
   }
}

Chris

Re: Update designer after updating a property

snorkie6-Jul-07 4:14

snorkie

6-Jul-07 4:14

Chris,

After using Invalidate(); add the following code.

Application.DoEvents();

Once you invalidate the control, windows still has to go and re-paint it. By using the line above, you are telling it to do any events right now.

Hogan

Re: Update designer after updating a property

Christopher Stratmann6-Jul-07 4:28

Christopher Stratmann

6-Jul-07 4:28

Ya thanks a lot. It worked great.

Chris

Re: Update designer after updating a property

Martin#6-Jul-07 6:57

Martin#

6-Jul-07 6:57

Hello,

As snorki said befor Invalidate requires DoEvents, to have an emidiate reaction.
But DoEvents is not a nice solution as it runs the whole message loop again.

I would prefere the Refresh() method.

All the best,

Martin

Tool tip text in a button

-spy-6-Jul-07 2:45

-spy-

6-Jul-07 2:45

hey guys..
anyone know how to make tool tip text in a button..im using C#.net 2003..n_n

Re: Tool tip text in a button

kubben6-Jul-07 2:56

kubben

6-Jul-07 2:56

I think you are talking about in windows. Here is some sample code form microsoft help:

// This example assumes that the Form_Load event handling method
// is connected to the Load event of the form.
private void Form1_Load(object sender, System.EventArgs e)
{
   // Create the ToolTip and associate with the Form container.
   ToolTip toolTip1 = new ToolTip();

   // Set up the delays for the ToolTip.
   toolTip1.AutoPopDelay = 5000;
   toolTip1.InitialDelay = 1000;
   toolTip1.ReshowDelay = 500;
   // Force the ToolTip text to be displayed whether or not the form is active.
   toolTip1.ShowAlways = true;
      
   // Set up the ToolTip text for the Button and Checkbox.
   toolTip1.SetToolTip(this.button1, "My button1");
   toolTip1.SetToolTip(this.checkBox1, "My checkBox1");
}

Hope that helps.
Ben

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