Managed C++/CLI

Why is BinaryWriter() is inserting unwanted bytes?

4-Jul-08 11:17

C++/CLI is great for making the transition from native C++ to the managed .NET
world - that's it's intended purpose. If you have C++ code and you want to use
the .NET framework then it's great.

Eventually you'll notice that the development tools using C# are much better, but
C++/CLI let's you use your existing C++ code as you make the transition.

I use C++/CLI extensively, along with native C++ and C#. There's no troubles that are any
different than using any other .NET language. Having the rich .NET framework available to
existing C++ code is great.

It's worth taking the time to study and understand the fundamentals of managed programming.
Especially important is performance-critical applications if you're making a lot of transitions
between managed and unmanaged code.

C++: The Most Powerful Language for .NET Framework Programming[^]
CLR Development (How Do I in Visual C++)[^]

Mark

BuckBrown2-Jul-08 6:41

BuckBrown

2-Jul-08 6:41

Hi, I'm using Visual Studio 2005 C++/CLI. I have a requirement that needs to write some ASCII to a file followed by binary data. I set up a BinaryWriter(FileStream) and everything is okay except that there is a byte preceding the String^ variables denoting the number of characters to follow. I do not want these "extra" bytes in the file. Is there a way to surpress these bytes from being written to the file?

Thanks,
Buck

Re: Why is BinaryWriter() is inserting unwanted bytes?

Mark Salsbery2-Jul-08 7:31

Visual c++ NET Application Probleme

2-Jul-08 7:31

You need to write the String chars yourself.

BinaryWriter has a Write() method that writes a Char.

for (int i = 0; i < str->Length; i++)
   writer->Write(str[i]);

Of course, you won't be able to read the data back in as a String
without some way of indicating where strings end in the file.

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

mikobi2-Jul-08 2:32

Re: Visual c++ NET Application Probleme

2-Jul-08 2:32

After I have finished my Visual c++ NEt 2005 Application, I try to execute it in an other PC: just a Copy the exe file. I have a message the configuration is incorrect.

What to do ?

Polar_Sheep2-Jul-08 4:03

Polar_Sheep

2-Jul-08 4:03

Install Visual Studio Redistributable, and you must click on properties of your project -> Configuration properties and Configuration change from DEBUG to RELEASE.
I must install .NET framework 3.5 to another computer. It is working on Vista, under XP It dont works.

Why are you reposting the same question?

led mike2-Jul-08 5:04

led mike

2-Jul-08 5:04

You have been a member long enough to know that's wrong, what a jerk.

Also, are you planning on ever learning how to research, study and learn on your own or are you planning on asking anonymous people on internet forums for all your information for the rest of your career, however short that may be?

led mike

Re: Why are you reposting the same question?

mikobi3-Jul-08 21:53

Deployment of Application

3-Jul-08 21:53

What do you lose if you reply me ?. I am at the end of my two applications in Visual c++ NET 2005, I am very happy for that.

I greeting All who have help me. Congratulations to CodeProject with Led Mike who don't like me.

I need your help to who need the World go ahead. The deployment of Visual c++ NET Application is not easy.

mikobi1-Jul-08 22:01

Re: Deployment of Application

1-Jul-08 22:01

I have finished my Visual c++ NET 2005 Application. I need to run it in other PC> When I copy the exe file it don't start.

Who can help me ?

Paul Conrad2-Jul-08 18:17

Paul Conrad

2-Jul-08 18:17

Be more descriptive of your problem.

mikobi wrote:
When I copy the exe file it don't start.

That doesn't help anyone help you at all.

"The clue train passed his station without stopping." - John Simmons / outlaw programmer

"Real programmers just throw a bunch of 1s and 0s at the computer to see what sticks" - Pete O'Hanlon

Re: Deployment of Application

mikobi3-Jul-08 20:29

Re: Deployment of Application

3-Jul-08 20:29

I need to run my program at another PC, When I copy the exe file there, and I run it, It does not start.

The error message is, the program can not start the configuration is wrong.

What to do

C# Beginner Nick16-Aug-08 17:10

C# Beginner Nick

16-Aug-08 17:10

This is extremely hard, you need to make a Setup.msi and do some other things.. their was a link i'll find it for you..

btw google is your friend, found this C++ Deployment first link
http://msdn.microsoft.com/en-us/library/zebw5zk9(VS.80).aspx[^]

TextBox

mikobi1-Jul-08 20:05

1-Jul-08 20:05

Dear Sir,

I need to capture only decimal number in my TextBox field on my form, how can I control that ?

Re: TextBox

leonigah1-Jul-08 20:32

leonigah

1-Jul-08 20:32

void OnKeyPress(System::Windows::Forms::KeyPressEventArgs^ e)override
{
if((e->KeyChar=='.'))
{
if(this->Text->Contains("."))
e->Handled = true;
}
if(!(wchar_t::IsDigit(e->KeyChar) || wchar_t::IsControl(e->KeyChar)))
e->Handled = true;
}

Nigah M Manzoor

Re: TextBox

mikobi1-Jul-08 22:21

1-Jul-08 22:21

Thanks for your help but the decimal point is not accepted.

What to do

Re: TextBox [modified]

mikobi2-Jul-08 2:22

Can I use FOR EACH on an array of structures?

2-Jul-08 2:22

If I do this, I obtain what I need:

void OnKeyPress(System::Windows::Forms::KeyPressEventArgs^ e)override
{

if(!(wchar_t::IsDigit(e->KeyChar) || wchar_t::IsControl(e->KeyChar) ||(e->KeyChar=='.')))
e->Handled = true;
}

Thanks for you support

BuckBrown1-Jul-08 11:42

BuckBrown

1-Jul-08 11:42

Hi, I'm using Visual Studio 2005 C++/CLI. I would like to access an array of structures using the for each construct. Is this possible?

Buck

Re: Can I use FOR EACH on an array of structures? [modified]

Mark Salsbery1-Jul-08 13:48

Re: Can I use FOR EACH on an array of structures?

1-Jul-08 13:48

ref struct TestStruct
{
   int i;
};

array<teststruct^> ^teststructarray = gcnew array<teststruct^>(20);

for (int i = 0; i < 20; i++)
   teststructarray[i] = gcnew TestStruct();

for each (TestStruct ^teststruct in teststructarray)
{
   teststruct->i = 42;
}

value struct TestValStruct
{
   int i;
};

array<testvalstruct> ^testvalstructarray = gcnew array<testvalstruct>(20);
for each (TestValStruct %testvalstruct in testvalstructarray)
{
   testvalstruct.i = 42;
}

That's better Smile | :)

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

modified on Tuesday, July 1, 2008 8:08 PM

Luc Pattyn1-Jul-08 14:28

Luc Pattyn

1-Jul-08 14:28

BuckBrown wrote:
Is this possible?

Yes. Try it!

Smile | :)

Luc Pattyn [Forum Guidelines] [My Articles]

Voting for dummies? No thanks. Dead | X|

Re: Can I use FOR EACH on an array of structures?

leonigah1-Jul-08 20:35

leonigah

1-Jul-08 20:35

for each(myStruct in myStructArray)
{
//code segments
}

Nigah M Manzoor

sample project

Xaria30-Jun-08 16:33

Xaria

30-Jun-08 16:33

Can some one please point to a sample CLR project developed using VC++ .net 3.5 framework. Or a book which describes on creating projects in vs 2008.
Thanks

Polar_Sheep30-Jun-08 21:40

Polar_Sheep

30-Jun-08 21:40

Everything you need to know is this (for VS 2008):

File -> New -> Project then look for Windows Form Application

click to Form1.h, you can see Form1.h [Design] and you can place some components from Toolbox there. In Properties are the characters of components.

led mike1-Jul-08 4:30

led mike

1-Jul-08 4:30

Xaria wrote:
Can some one please point to a sample CLR project developed using VC++ .net 3.5 framework.

Well I have not installed VS2008 yet but VS2005 and all the way back to like VC6 came with samples in the Installation. Take a look in your Programs Files/<VS install folder> etc., they may already be there, if not run the Installer and look for Samples as an option and install them.

led mike

Mark Salsbery1-Jul-08 7:26

1-Jul-08 7:26

Xaria wrote:
Or a book which describes on creating projects in vs 2008.

Here's my short book on creating a CLR project in VS2008:

1) Start VS
2) From the file menu, choose New/Project...
3) In the New Project dialog, select .NET Framework 3.5 with the drop-button on the upper right.
4) Select Visual C++/CLR in the Project Types tree
5) Select a template in the Templates list
6) Give the project a name and location in the appropriate dialog fields, creating a solution if necessary
7) Click OK
8) Open the solution explorer window (View menu/Solution Explorer)
9) Right click the new project in the solution explorer and click Rebuild

You should now have a working sample CLR project developed using VC++ .net 3.5 framework.

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]