How to implement Shared Memory in Windows Application and Web Application?

Question

I am making windows application and web application in .NET version 4.0. In that application i am sending request of data from .aspx page to windows application.The windows application has a collection of data.i want to send response to that request with proper data from collection. From web application i am requesting data for particular patient and for that i am sending patientID in query string. In windows application i have collection as

class StreamDataInfo
{        
    public string m_patientID { get; set; }
    public List<string> m_StreamData { get; set; }
}

From that collection i want to return data from m_StreamData list in response to that request.Please help me.Thanks in advance.

Your web application calls a Windows application? Where is the Windows application located? On the Server? — Heinzi
– Heinzi, Commented Dec 16, 2011 at 8:36
Why don't name the variables regularly? PatientID and StreamData? — abatishchev
– abatishchev, Commented Dec 16, 2011 at 8:36
Have you considered putting the relevant code into a DLL and just referencing the DLL in your web application? — Heinzi
– Heinzi, Commented Dec 16, 2011 at 9:58
my windows application is continuously running on server.So how is it possible to use that DLL in web app? — Dany
– Dany, Commented Dec 16, 2011 at 10:05

Joy George Kunjikkuru · Accepted Answer · 2011-12-16 08:45:07Z

2

Have you looked at memory mapped files?

http://weblogs.asp.net/gunnarpeipman/archive/2009/06/21/net-framework-4-0-using-memory-mapped-files.aspx

answered Dec 16, 2011 at 8:45

Joy George Kunjikkuru

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Yahia · Accepted Answer · 2011-12-16 08:45:03Z

1

I am not sure that I understand the architecture you have in mind...

But regarding to shared memory:

In windows this is implemented by means of "memory-mapped-files" - these can either be real file or "non-persistent" files.

In combination with a global Mutex you can implement a communication scheme between two or more processes/threads etc. on the same machine.

Some reference links:

answered Dec 16, 2011 at 8:45

Yahia

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abatishchev · Accepted Answer · 2011-12-16 09:48:32Z

1

Check the following options:

Host a WCF service in the Windows application that will expose your data. Have the web application request data from the WCF service.
Make the web application write the request to a file on a specified folder; the Windows application will poll this folder and then send the data to the web application (I'm not sure this will work fine because I do not have enough information about your architecture, but I would try to implement a WCF service in the web application for this)
Implement a WCF service that will directly expose data from the Windows application database or, if possible, directly access the Windows application database from the web application.

edited Dec 16, 2011 at 9:48

abatishchev

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answered Dec 16, 2011 at 9:22

Dan

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