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Re: Interop with MSDev 6.0 running instanceS

Heath Stewart25-May-04 10:36

25-May-04 10:36

Have you actually tried breaking into your GetActiveObjects method with the debugger and see if the while loop is entered twice? Looking at your code, there's a lot of problems , especially with the way you're using the IBindCtxs. I recommend you read over the COM documentation in the Platform SDK, especially the IBindCtx and IMoniker. Most of your code is just fine, but some of those problems could lead to what you're experiencing.

To note, you will see a CLSID (Item Monikers) for msdev.exe for each instance. You can use irotview.exe in the Common\Tools directory for Visual Studio 6.0.

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Re: Interop with MSDev 6.0 running instanceS

Eric Marchesin25-May-04 11:15

Eric Marchesin

25-May-04 11:15

Yes, I've worked with the debugger : the while loop is entered twice (and even one time per MSDev) but it seems that the call prot.GetObject(pmon[0],out objReturnObject) always returns the same object. Therefore I get each time the same list of files.

Well I've already tried to read carefully the COM documentation but I got lost and bogged down in too much detail (in the more so as I'm not so familiar with english).
I'm groping...

If you would mind guiding me a little bit more to get the ActiveObject for each MSDev, it would be very kind of you Smile | :)

What is the right way to use IBindCtx here ?

Kind regards,

- Éric -

Re: Interop with MSDev 6.0 running instanceS

Heath Stewart25-May-04 11:20

Heath Stewart

25-May-04 11:20

Ah...details: the heart and soul - and bane - of COM programming. It is a wild beast and difficult to tame at times. Smile | :)

When you say you're getting the same object, what exactly do you mean? The Item Moniker will be the same because the same moniker (though referring to different instances) is registered in the ROT. Do you get a duplicate file list or something?

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Re: Interop with MSDev 6.0 running instanceS

Eric Marchesin25-May-04 11:32

Eric Marchesin

25-May-04 11:32

I mean that after calling this method :

object[] GetActiveObjects(string ProgId)
{
while ...
{
prot.GetObject(pmon[0],out objReturnObject);
objs.Add(objReturnObject);
}
}

I get an array of N objects (N=number of MSDev instances) but when casting them into DSSharedObjects.IApplication and asking for the App.Documents I get for each one the same array of files...

Ahhh... (sigh) If only I could get different DSSharedObjects.IApplication objects ! D'Oh! | :doh:

- Éric -

Re: Interop with MSDev 6.0 running instanceS

Heath Stewart25-May-04 12:21

Heath Stewart

25-May-04 12:21

I'm sorry, but I really don't know what's wrong in that case. Out of curiosity, though, does the documents list for one application object contain a complete list of all documents open in all instances of msdev.exe?

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Re: Interop with MSDev 6.0 running instanceS

Eric Marchesin25-May-04 12:32

Eric Marchesin

25-May-04 12:32

No, the documents list for one application object contains only the list of the documents open in the first instance of msdev.exe in the ROT. No way to reach others. So it seems that all application objects represent the same one.
So finally all I have is the number of msdev.exe and I can interoperate with only one Wink | ;)

I'm sure it's possible... what a pity to be in a deadlock Confused | :confused:

Anyway, thank you all the same !

- Éric -

Soap extension with command line client?

shining_star7725-May-04 8:51

shining_star77

25-May-04 8:51

Hi!

I am trying to grasp the usage of SOAP extensions, and was wondering if someone can help me with this scenario:

I have a command line client which invokes a webservice. In response, the webservice is sending some XML which I would like to validate. I understand that in the case where a client _calls_ a webservice, validation can be done in a SOAP extension for the request that is coming to the webservice. The same thing can be done for a request that is outgoing from the webservice.

In my scenario, the called webservice does need to know (or does not care)about validation, it simply sends out the response. I am not sure how I can validate a response from this webservice to my client (at the client side).

Can I use a SoapExtension here? In which case, how would I configure the client so that when it receives a response, the extension is used?

Thanks in advance!

Re: Soap extension with command line client?

Heath Stewart25-May-04 9:37

Heath Stewart

25-May-04 9:37

There are no configuration sections to configure SOAP extensions on the client. Often times you can attribute your proxy methods with SOAP extension attributes to understand the extensions.

You should take a look at Web Service Enhancements 2.0, OR WSE 2.0, that was just released yesterday. These are classes that implement industry standards (like WS Addressing, WS Security, etc.) that make extensive use of SOAP extensions. That should provide quite a bit of insight, especially if you install the SDK and look over the examples.

Otherwise, you're responsible for parsing the SOAP extensions yourself on your client.

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How to use

IamADotNetGuy25-May-04 7:57

IamADotNetGuy

25-May-04 7:57

How to use this DBNull.IConvertible.ToDecimal Method

Re: How to use

Heath Stewart25-May-04 8:11

Heath Stewart

25-May-04 8:11

IFormatProvider formatter = CultureInfo.InvariantCulture.NumberFormatInfo;
decimal d = ((IConvertable)DBNull.Value).ToDecimal(null);

When you see an explicit interface declaration like that, you must first cast it to the interface; then you can call the explicit interface method implementation (or get/set a property or handle an event).

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Re: How to use

IamADotNetGuy25-May-04 8:14

IamADotNetGuy

25-May-04 8:14

But I am getting I dont have reference to assembly...
do i need to include any classes..

Thanks for the immediate reply

Re: How to use

Heath Stewart25-May-04 8:18

Heath Stewart

25-May-04 8:18

You need to reference all necessary assemblies (in this case, mscorlib.dll which is always referenced unless you tell the compiler otherwise) and import the System namespace:

using System;

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Re: How to use

IamADotNetGuy25-May-04 8:22

IamADotNetGuy

25-May-04 8:22

I am able to do that...
after that also i am unable to convert DBNull value to decimal...

I have a decimal , if nothing is there in that i need to assign a dbnull value to that , but i am not able to do that

Once again thanks for the immediate response

Re: How to use

Heath Stewart25-May-04 8:28

Heath Stewart

25-May-04 8:28

Because DBNull.IConvertible.ToDecimal always throws an InvalidCastException. But I answered what you asked.

You might want to be more specific about what you're trying to do. If you need to insert a null value for a decimal field in a database, then you actually use DBNull.Value, not the decimal equivalent (which isn't even possible since value types - such as the primative types - can't be null).

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Re: How to use

IamADotNetGuy25-May-04 8:46

IamADotNetGuy

25-May-04 8:46

Is there anyway i can do that......

Re: How to use

Heath Stewart25-May-04 9:22

Heath Stewart

25-May-04 9:22

If you use parameterized queryies for example, you could use that as the value:

SqlCommand cmd = sqlConnection1.CreateCommand();
cmd.CommandText = "UPDATE MyTable SET DecimalField = @DecimalField WHERE ID = 1";
SqlParameter decimalField = cmd.Parameters.Add("@DecimalField", SqlDbType.Decimal);
decimalField.Value = myDecimal == 0m ? DBNull.Value : myDecimal;

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Logout problem

IamADotNetGuy28-May-04 5:42

IamADotNetGuy

28-May-04 5:42

Hi Heath Stewart

Could u let me know the solution for this

I have a web page which contains two frames, I am redirecting the user to login page once session timeout, the problem in both the frames I am getting the login page. could anybody let me know how can i handle so that it will redirect to login page with out any frames....

Re: Logout problem

Heath Stewart30-May-04 6:13

Heath Stewart

30-May-04 6:13

This is a common problem with frames, which is why almost all web sites do not use them today. I would recommend designing your site using tables to layout your page with included components like headers, footers, and navigation bars.

If you insist on frames, you will have more problems. Make sure you use the target attribute of the A tab wisely.

As far as deirecting a user to a single login page, this isn't possible using the .NET FCL's authentication modules. You would have to write your own authentication module that takes target frames into account. The ASP.NET authentication modules do not do this.

For more information on how to do this, read about IHttpModule and the existing authentication modules like FormsAuthenticationModule to see how they work, even using ildasm.exe that comes with the .NET SDK (if you know how to read IL) or ".NET Reflector", which you can google for (both a disassembler and decompiler with a nice interface - I currently do not have the link available since I'm on vacation).

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Re: Logout problem

IamADotNetGuy3-Jun-04 12:23

IamADotNetGuy

3-Jun-04 12:23

Hi have a problem

Desc:
I am populating a window from parent window, i will perform some action on the child window and i will click OK button, once i click OK i need to pass a server side created object back to parent window.can you let me know how i can do that?

Thanks in advance

Re: Logout problem

Heath Stewart3-Jun-04 16:58

Heath Stewart

3-Jun-04 16:58

You can't. Once again, HTTP is simple client request/server response. The best you could do is pull the server from the client to watch for changes using the HTTPXML component or the WebService behavior, both supported only by Internet Explorer (Mozilla has a couple of possibilities as well).

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Re: Logout problem

IamADotNetGuy4-Jun-04 3:55

IamADotNetGuy

4-Jun-04 3:55

Please can you let me know how can i do that? ii have never worked on HTTPXML COMPONENT

Re: Logout problem

Heath Stewart4-Jun-04 4:15

Heath Stewart

4-Jun-04 4:15

Read about it on MSDN. This has nothing to do with C# and more to do with web development. Besides, researching is just part of the development process.

For more information on the WebService behavior, see http://msdn.microsoft.com/workshop/author/webservice/webservice_node_entry.asp[^]. For more information about the XMLHTTP component, see http://support.microsoft.com/support/kb/articles/Q290/7/61.asp[^] and follow the links. It mentions using this between servers, but you could use it from a client with MSXML 3.0 installed using Internet Explorer 5.0 or higher.

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How to call an external program

tcole3125-May-04 6:04

tcole31

25-May-04 6:04

Does anyone know how to call an external program in C#?

Thanks,

Tim Cole

Re: How to call an external program

Colin Angus Mackay25-May-04 6:29

Colin Angus Mackay

25-May-04 6:29

tcole31 wrote:
Does anyone know how to call an external program in C#?

Yes, you use the Process class. See this link for more information: http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpref/html/frlrfSystemDiagnosticsProcessClassTopic.asp[^]

"You can have everything in life you want if you will just help enough other people get what they want." --Zig Ziglar

The Second EuroCPian Event will be in Brussels on the 4th of September

Can't manage to P/Invoke that Win32 API in .NET? Why not do interop the wiki way!

Re: How to call an external program

tcole3125-May-04 7:07

tcole31

25-May-04 7:07

Thanks

Tim Cole

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