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Re: How to send request to php page using POST method

28-Apr-04 3:26

As I mentioned before, drop the preceeding "?" in postData:

HttpWebRequest request = (HttpWebRequest)
  WebRequest.Create("http://www.umc.ua/misc/sendsms.php");
request.Method = "POST"
request.ContentType = "application/x-www-form-urlencoded";
string postData =
  "network1=UMC&Phone1=5918658&Message=HellofromCSharp&sender_name=sn";
byte[] buffer = Encoding.ASCII.GetBytes(postData);
request.ContentLength = buffer.Length;
Stream s = request.GetRequestStream();
s.Write(buffer, 0, buffer.Length);
s.Flush();
s.Close();
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
// ...

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Alex Getman28-Apr-04 5:04

Alex Getman

28-Apr-04 5:04

Great thanx! It works now. One more thing: data posted but my WinForm Application hangs after that...

www.xedom.com

Re: How to send request to php page using POST method

Heath Stewart28-Apr-04 10:23

Re: How to send request to php page using POST method

28-Apr-04 10:23

Then you've got some code that isn't finishing execution. Step through your code and find out on which line it "hangs" (blocks). If you're making synchronous calls, execution of the code is done in the same thread that your control was created in (the UI thread), so nothing else happens (no response to user input, typically no painting, etc.) until that code finishes executing.

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Alex Getman28-Apr-04 20:25

Alex Getman

28-Apr-04 20:25

I have commented last line of the code and all works fine for now:
HttpWebRequest request = (HttpWebRequest) WebRequest.Create("http://www.umc.ua/misc/sendsms.php");
request.Method = "POST";
request.ContentType = "application/x-www-form-urlencoded";
string postData = "network1=UMC&Phone1=5918658&Message=We did it! &sender_name=sn";
byte[] buffer = Encoding.ASCII.GetBytes(postData);
request.ContentLength = buffer.Length;
Stream s = request.GetRequestStream();
s.Write(buffer, 0, buffer.Length);
s.Flush();
s.Close();
//HttpWebResponse response = (HttpWebResponse)request.GetResponse();
//response.Close();

Could you explain me please for what I need this line-
HttpWebResponse response = (HttpWebResponse)request.GetResponse();

www.xedom.com

Re: How to send request to php page using POST method

Heath Stewart29-Apr-04 3:06

Out of Process Server in C#

29-Apr-04 3:06

That's what submits the request and gets the response from the server. You can ignore the response if you like, but you really should check the HttpWebResponse.StatusCode to make sure the operation succeeded.

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Colin Herkes27-Apr-04 21:05

27-Apr-04 21:05

I am looking into porting a COM C++ out of process server to C#. Been looking for an example of an out process server written in C#, can't seem to find any info in MSDN or anywhere else.
Any assistance appreciated.

Thanks in Advance.

Colin

Heath Stewart28-Apr-04 3:17

28-Apr-04 3:17

See Nick's article, Creating a CCW for COM-enabled Non-.NET Applications[^] and follow the same things, paying attention to the note I prompted him to add about not using auto-generated class interfaces.

Then you register the executable as you would a DLL. Take a look at this sample:

using System;
using System.Drawing;
using System.Reflection;
using System.Runtime.InteropServices;
using System.Windows.Forms;

[assembly: AssemblyVersion("1.0.*")]
[assembly: AssemblyKeyFile(@"C:\Path\To\KeyFile.snk")] // sn.exe -k KeyFile.snk

namespace Test
{
  [Guid("0eea66bf-21bf-4c8c-8678-ad58106343a7")]
  [InterfaceType(ComInterfaceType.InterfaceIsIDispatch)]
  public interface ITest
  {
    [DispId(0)]
    DialogResult ShowDialog();
  }

  [ClassInterface(ClassInterfaceType.None)]
  [Guid("861e1098-7705-4686-945e-236a0ef439ef")]
  [ProgId("Test.Test")]
  public class Test : Form, ITest
  {
    static void Main()
    {
      Application.Run(new Test());
    }

    public Test()
    {
      SuspendLayout();

      Text = "Out-of-Proc Server Test";

      Label lbl = new Label();
      Controls.Add(lbl);
      lbl.Location = new Point(8, 8);
      lbl.Text = "Hello, world!";

      ResumeLayout();
    }
  }
}

Compile it and run:

regasm.exe /tlb /codebase Test.exe

Finally, I create a very simple JScript file that I ran with cscript.exe (Windows Scripting console host):

var test = new ActiveXObject("Test.Test");
test.ShowDialog();

The important thing is that your interfaces are dispatch interfaces (or dual) so that the script engine can find and invoke your members.

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Colin Herkes29-Apr-04 21:24

29-Apr-04 21:24

Heath,

Thanks for the reply, I looked at Nicks Article, following the same things and using the sample I could not get it to run out of process.

A better description of what I am trying to do might help:

I have built a COM Callable Wrapper (CCW) using Microsoft .NET & C#. The CCW uses attributes to provide a COM interface into a .NET component. This CCW can be created in-process using standard CoCreateInstance calls. However, it is necessary that this CCW runs out-of-process replacing an original COM component built using VC++ as a COM EXE service.

I have used the SDK supplied COMREG sample instead of REGASM to register the component with an AppID indicating that it should be run with a surrogate process – the system supplied surrogate DllHost.EXE.

The CCW can then be created out of process when CoCreateInstanceEx with a local COSERVERINFO address, ie, via DCOM. However, existing clients use standard CoCreateInstance to create the CCW; however standard CoCreateInstance causes the CCW to be created in-process instead of out of process.

Is their a mechanism to force the CCW to be created out-of-process (as if created using CoCreateInstanceEx) with the standard CoCreateInstance call.

I am investigating futher, any further you have to add would be greatly appreciated.

Regards
Colin

Heath Stewart30-Apr-04 2:57

30-Apr-04 2:57

Yeah, I know what an out-of-proc server is. I've been working with COM since it was known as OLE (so to speak). Did you try compiling, registering, and executing the script file I wrote in my reply? It works perfectly fine. You compile it as an exe:

csc /t:exe Test.cs

Follow the rest of the instructions and you'll get an out-of-proc server.

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Colin Herkes3-May-04 0:19

3-May-04 0:19

I followed your instructions to the letter, and I did not get an out of process server

Heath Stewart3-May-04 1:49

3-May-04 1:49

What exactly do you mean that you don't get an out-of-process server? It works just fine. My forte' is interoperability in .NET and I do this all the time. The example does work, and if you need a typelib the /tlb switch on regasm.exe will generate one. If you make a script file like I provided, then execute the script with the Windows Scripting Host (cscript.exe for this example). Check the task manager and you'll see the application running. The ShowDialog method defined in the explicit class interface is just one method to show in this example. If you need access to anything else (like form properties, methods, or your own class's properties and methods) then you'll need to define those in the class interface as well, or at least another dispatch interface you could implement. The CLR will take care of the rest.

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Colin Herkes3-May-04 2:54

3-May-04 2:54

I created a script file, exactly as you provided. I get a dialog box with "Out-of-Proc Server Test" in the title bar and Hello world as expected. I have checked task manager and the application I see running is cscript.exe. Is this what you mean? What application do you mean? I was expecting test.exe(the out-ofproc server exe), which is not in task manager, maybe I am missing something here. Unsure | :~

My understanding of an out of process server is "A server, implemented as an .EXE application, which runs outside the process of its client", cscript being the client in this case. I apologise for the confusion, if I have caused any. I have done this in COM, however this is the first time I have tried to do it in .NET.

Heath Stewart3-May-04 3:18

3-May-04 3:18

mscoree.dll - the CLR host - creates an AppDomain for the executable and loads the assembly, executing the main entry point and marshalling calls. This does not create a separate process as you've seen. I'm not even sure you could do this using pure .NET. You might have to create your own shim (like mscoree.dll) that runs as a process and marshals calls to your managed AppDomain. I remember seeing some code once for a custom host such as this (sorry, can't remember where - though you could try SourceForge) and it was by no means a simple task.

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leppie28-Apr-04 8:39

leppie

28-Apr-04 8:39

Have a look at my plugin manager article, someone mentioned that was similar to an out of process server.

^{top secret AdvancedTextBox}

Colin Herkes29-Apr-04 21:26

29-Apr-04 21:26

Leppie,

Thanks for the reply, I had a look at your plugin manager article, tried to do the same in my situation and could not get it to run out of process.

A better description of what I am trying to do might help:

I have built a COM Callable Wrapper (CCW) using Microsoft .NET & C#. The CCW uses attributes to provide a COM interface into a .NET component. This CCW can be created in-process using standard CoCreateInstance calls. However, it is necessary that this CCW runs out-of-process replacing an original COM component built using VC++ as a COM EXE service.

I have used the SDK supplied COMREG sample instead of REGASM to register the component with an AppID indicating that it should be run with a surrogate process – the system supplied surrogate DllHost.EXE.

The CCW can then be created out of process when CoCreateInstanceEx with a local COSERVERINFO address, ie, via DCOM. However, existing clients use standard CoCreateInstance to create the CCW; however standard CoCreateInstance causes the CCW to be created in-process instead of out of process.

Is their a mechanism to force the CCW to be created out-of-process (as if created using CoCreateInstanceEx) with the standard CoCreateInstance call.

I am investigating further, any further you have to add would be greatly appreciated.

Regards
Colin

leppie30-Apr-04 6:55

leppie

30-Apr-04 6:55

Sorry, but my COM knowledge is worse than zero Sigh | :sigh:

I have no need for it and it looks like too much crap for my liking.

^{top secret AdvancedTextBox}

Direct X

mookeroo27-Apr-04 15:37

mookeroo

27-Apr-04 15:37

I would like to play a Direct3D animation inside of a window panel. Can anyone point me in the right direction. I have nothing implemented for that so far. Is it simply a case of specifying that the panel is the Owner of the animation?

Re: Direct X

Heath Stewart27-Apr-04 17:11