tag:blogger.com,1999:blog-83471392011-08-02T17:06:36.009-07:00All about technology and cool stuff.Charles Vazhttp://www.blogger.com/profile/11225727377011899751noreply@blogger.comBlogger391100tag:blogger.com,1999:blog-8347139.post-45936361567973591572007-06-22T23:08:00.000-07:002010-09-26T15:45:30.039-07:00

Biomedical/Bedside/ICU Device Integration In the words of the guru Tim Gee - Medical Connectivity Consulting "Medical device integration is a critical (and an often overlooked) part of EMR planning. To be successful, any plan must take into account many more considerations beyond getting an HL7 (or CCR)feed into the EMR. Multiple stakeholders including nursing and clinical/biomedical

Charles Vazhttp://www.blogger.com/profile/11225727377011899751noreply@blogger.com0tag:blogger.com,1999:blog-8347139.post-1159487724635728712006-09-28T16:54:00.000-07:002010-02-28T10:41:00.864-08:00

Well, we work in the next era of software development, not only designing applications, but also developing systems that communicate with each other, thus participating in a workflow. Automating this workflow through the seamless integration of these apps is a task that challenges many of the industries that we work in. Automated Workflow Environments are those systems where multiple systems

Charles Vazhttp://www.blogger.com/profile/11225727377011899751noreply@blogger.com4tag:blogger.com,1999:blog-8347139.post-1158636297302570722006-09-18T20:16:00.000-07:002010-08-10T13:49:11.512-07:00

Not yet tired of windows? Well, read on to find out the next gen O/S out there with easy in-place upgrades... * New capabilities - create a custom remastered Live CD/DVD/USB/SD and boot from a USB storage device (flash, SD, hard drive, etc). And, with Ubuntu 9.10, OpenSuse 11.2 and Fedora 10 - create a custom Live 64 bit linux CD/DVD/USB using remastersys or makeSusedvd or revisor . Let’s see

Charles Vazhttp://www.blogger.com/profile/11225727377011899751noreply@blogger.com7tag:blogger.com,1999:blog-8347139.post-1140071108117323922006-02-15T22:24:00.000-08:002007-04-22T20:36:17.652-07:00

Following is a check list I refer to often which catches many issues often:1. No errors should occur when building the source code. No warnings should be introduced by changes made to the code. Also, any warnings during the build should be within acceptable boundaries with good reasoning.2. Each source file should start with an appropriate header and copyright information. All source files should

Charles Vazhttp://www.blogger.com/profile/11225727377011899751noreply@blogger.com0tag:blogger.com,1999:blog-8347139.post-1129870887796977122005-10-20T21:53:00.000-07:002007-04-24T02:14:55.056-07:00

Here are my investigations based on MSDN and a running site at Microsoft since Aug 2005 with better performance than before:· Because of the way that the .NET Framework is designed, you can deploy the 2.0 framework without disrupting a current installation of the 1.0 or 1.1 frameworks.To configure a 1.x application's script map to use the .NET Framework version 2.0On the Start menu, click Run.In

Charles Vazhttp://www.blogger.com/profile/11225727377011899751noreply@blogger.com0tag:blogger.com,1999:blog-8347139.post-1126605498944285602005-09-13T02:55:00.000-07:002007-04-22T20:41:01.079-07:00

PORTABLE APPLICATIONS: * Flash MX ActionScript allows you to create Flash movies that are "device aware."BANDWIDTH-SENSITIVE APPLICATIONS: * One of the long-standing benefits of using Flash movies for Web content is the fact that SWF files can be incredibly small.CUSTOM MEDIA PLAYERS: * With the new capabilities, you can effectively create stand-alone media players using a Flash movie as the "

Charles Vazhttp://www.blogger.com/profile/11225727377011899751noreply@blogger.com0tag:blogger.com,1999:blog-8347139.post-1122641199574546962005-07-29T05:22:00.000-07:002007-09-06T11:10:23.180-07:00

Always create a data model (ERD).Consider using an application block or a best practice based design.Make sure the database is normalized - very important else sql server will not give optimized query plans (Tips for SQL Server 2005 Query Plans) . For the 1 to many (1:m OR m:1) relation, -> ensure that the child table's primary key has one of its composite keys as the parent table's primary key.

Charles Vazhttp://www.blogger.com/profile/11225727377011899751noreply@blogger.com0tag:blogger.com,1999:blog-8347139.post-1106299216418465502005-01-21T01:18:00.000-08:002007-04-24T02:22:29.907-07:00

One of the most awaited features of Microsoft .NET 2.0 is generics. Starting with VS 2005, C#, Managed C++, and VB will have CLR support for generics.Generics promise to increase type safety, improve performance, reduce code duplication(code reuse) and eliminate unnessecary casts(boxing). The most obvious application of generics in the framework class library are the generic collections in the

Charles Vazhttp://www.blogger.com/profile/11225727377011899751noreply@blogger.com0tag:blogger.com,1999:blog-8347139.post-1105959862724674702005-01-17T02:53:00.000-08:002007-04-22T20:49:55.186-07:00

Hi,Now that you have finished your .NET Application, the memory bogs you down?Limiting memory usage of .NET applications is a requirement that often arises in programs that allocate and use large amounts of memory. The garbage collected environment that the CLR offers means that memory that is used to perform some calculation then discarded is not immediately collected once it is no longer needed

Charles Vazhttp://www.blogger.com/profile/11225727377011899751noreply@blogger.com0tag:blogger.com,1999:blog-8347139.post-1103352810506988802004-12-17T23:50:00.001-08:002006-02-08T12:54:06.766-08:00

Hi, .NET Remoting is gaining a lot of importance so here's some good links http://www.c-sharpcorner.com/Remoting.asp http://www.thinktecture.com/resources/articles/default.html http://www.thinktecture.com/Resources/ArchitectureBriefings/RemotingBestPractices.pdf Thanks to the authors for this info.

Charles Vazhttp://www.blogger.com/profile/11225727377011899751noreply@blogger.com0tag:blogger.com,1999:blog-8347139.post-1102941439498188892004-12-13T04:35:00.000-08:002004-12-13T04:39:02.726-08:00

UML is a modeling language for specifying, visualizing, constructing, and documenting the artifacts of a system-intensive process http://www.agilemodeling.com/essays/umlDiagrams.htm http://www.dotnetcoders.com/web/learning/uml/default.aspx Thanks to the authors for a nice site on UML.

Charles Vazhttp://www.blogger.com/profile/11225727377011899751noreply@blogger.com0tag:blogger.com,1999:blog-8347139.post-1100775803179851392004-11-18T03:01:00.000-08:002004-11-18T03:03:23.180-08:00

Event logging pre-.NET When you access the event log using the standard NT API calls, the system stores a structure that contains (amongst other things) the message ID and any replacement strings ("inserts") for the message -- but it does not store the message text itself. Reading from the log When you read an entry from an event log, the system reads the stored message ID and replacement strings

Charles Vazhttp://www.blogger.com/profile/11225727377011899751noreply@blogger.com0tag:blogger.com,1999:blog-8347139.post-1100775385041849552004-11-18T02:49:00.000-08:002004-11-23T03:11:00.673-08:00

This interesting problem occurs only when there is a call to update after the insert and the @@IDENTITY value has to be locked, so there is a deadlock trying to get a hold of this value. CREATE TABLE [test] ( [a] [int] IDENTITY (1, 1) NOT NULL , [b] [varchar] (10) NULL , [c] [int] NULL , CONSTRAINT [PK__test] PRIMARY KEY CLUSTERED ( [a] ) ) GO Here [a] and [c] have to have the same value. So,

Charles Vazhttp://www.blogger.com/profile/11225727377011899751noreply@blogger.com0tag:blogger.com,1999:blog-8347139.post-1097834699012652852004-10-15T02:55:00.001-07:002004-10-15T03:04:59.013-07:00

Sqldiag - Sqldiag is a utility used for report generation and collection of diagnostic information on database server / operating system configuration parameters. Sqldiag gathers the information, even if Microsoft SQL Server 2000 services are stopped. The report generated by Sqldiag contains the following information: Complete dump of all SQL Server error logs; Registry information, related to

Charles Vazhttp://www.blogger.com/profile/11225727377011899751noreply@blogger.com1tag:blogger.com,1999:blog-8347139.post-1097666414695757712004-10-13T04:09:00.000-07:002004-10-13T04:29:22.286-07:00

Here, a MSDE database is dropped, attached, and a user is given rights on the db With minor changes to the osql parameters a Server name can be provided and this script will work for an SQL 2000 database. --drop old db osql -E -S -Q "DROP DATABASE [dbname]" --copy the mdf to the target loc copy "c:\installtemp\dbname*.?df" "C:\program Files\Microsoft SQL Server\MSSQL\Data" --make sure the db

Charles Vazhttp://www.blogger.com/profile/11225727377011899751noreply@blogger.com1tag:blogger.com,1999:blog-8347139.post-1097216623696627282004-10-07T23:04:00.000-07:002004-10-07T23:27:28.780-07:00

SQL Server 2000 only works on Windows-based platforms, including Windows 9x, Windows NT, Windows 2000 and Windows CE. In comparison with SQL Server 2000, Oracle 9i Database supports all known platforms, including Windows-based platforms, AIX-Based Systems, Compaq Tru64 UNIX, HP 9000 Series HP-UX, Linux Intel, Sun Solaris and so on. Sometimes there is the migration issue, so here goes... There

Charles Vazhttp://www.blogger.com/profile/11225727377011899751noreply@blogger.com0tag:blogger.com,1999:blog-8347139.post-1097153671355404382004-10-07T05:48:00.001-07:002004-10-07T05:54:31.356-07:00

The template and details are at: http://www.cs.ubc.ca/~gregor/teaching/papers/4+1view-architecture.pdf "To describe a software architecture, we use a model composed of multiple views or perspectives. In order to eventually address large and challenging architectures, the model we propose is made up of five main views The logical view, which is the object model of the design (when an

Charles Vazhttp://www.blogger.com/profile/11225727377011899751noreply@blogger.com0tag:blogger.com,1999:blog-8347139.post-1097040697206818942004-10-05T22:23:00.000-07:002004-10-05T22:37:27.073-07:00

Hi there, Been busy with lots of work with .NET Remoting Performance Testing and stuff. Found something interesting so here goes. There's a nice easy way to test your IIS6 - SSL performance, install the free SelfSSL Certificate(SelfSSL Version 1.0) from the IIS Resource Kit (http://www.microsoft.com/downloads/details.aspx?FamilyID=56fc92ee-a71a-4c73-b628-ade629c89499&displaylang=en) . Its very

Charles Vazhttp://www.blogger.com/profile/11225727377011899751noreply@blogger.com0tag:blogger.com,1999:blog-8347139.post-1096543452188299892004-09-30T04:17:00.000-07:002004-09-30T04:31:03.130-07:00

Think you know all the patterns in Unit Testing, think again, here are the various Unit Testing Patterns. Unit Testing Patterns Pass/Fail Patterns The Simple-Test Pattern The Code-Path Pattern The Parameter-Range Pattern Data Driven Test Patterns The Simple-Test-Data Pattern The Data-Transformation-Test Pattern Data Transaction Patterns The Simple-Data-I/O Pattern

Charles Vazhttp://www.blogger.com/profile/11225727377011899751noreply@blogger.com0tag:blogger.com,1999:blog-8347139.post-1096186173567921062004-09-26T01:14:00.000-07:002004-09-29T07:42:04.540-07:00

Many a time we face this problem of updating the UI while the worker/IO thread is still performing some time consuming background action, fetching results and trying to change the UI while the UI also needs to be "freeze-free" and responsive to a user. Sometimes the UI also needs to support a "Cancel/Close" operation. There are various solutions to this problem in .NET Winforms -- the most

Charles Vazhttp://www.blogger.com/profile/11225727377011899751noreply@blogger.com0tag:blogger.com,1999:blog-8347139.post-1096019711755872302004-09-24T01:39:00.000-07:002004-09-24T02:59:47.936-07:00

NUnit is a open-source unit-testing framework for all .Net languages. NUnit has two different ways to run your tests :- The console runner, nunit-console.exe, is the fastest to launch, but is not interactive. The gui runner, nunit-gui.exe, is a Windows Forms application that allows you to work selectively with your tests and provides graphical feedback.Sample:-Here's the way to write a test for

Charles Vazhttp://www.blogger.com/profile/11225727377011899751noreply@blogger.com0tag:blogger.com,1999:blog-8347139.post-1095929127604417182004-09-23T01:32:00.000-07:002004-09-24T00:20:26.286-07:00

"CCOW - Clinical Context Object Workgroup - is a vendor independent standard developed by the HL7 organization to allow clinical applications to share information at the point of care. CCOW enables the visual integration of disparate healthcare applications. "Basically a "context management", software integration application. Specifically, CCOW defines a protocol for securely linking applications

Charles Vazhttp://www.blogger.com/profile/11225727377011899751noreply@blogger.com0tag:blogger.com,1999:blog-8347139.post-1095832932374311352004-09-21T22:04:00.000-07:002004-09-21T23:08:33.563-07:00

Microsoft Windows Management Instrumentation (WMI) technology support for Simple Network Management Protocol (SNMP). WMI is used to represent management objects in Windows-based management environments. The WMI scripting interface also provides scripting support.The WMI technology also provides:Access to monitor, command, and control any managed object through a common, unifying set of

Charles Vazhttp://www.blogger.com/profile/11225727377011899751noreply@blogger.com0tag:blogger.com,1999:blog-8347139.post-1095752619966856472004-09-21T00:42:00.000-07:002004-09-21T00:43:39.966-07:00

http://msdn.microsoft.com/msdnmag/issues/04/10/CuttingEdge/default.aspx

Charles Vazhttp://www.blogger.com/profile/11225727377011899751noreply@blogger.com0tag:blogger.com,1999:blog-8347139.post-1095745462760324202004-09-20T22:31:00.000-07:002004-09-20T23:41:41.620-07:00

      DICOM is Digital Imaging and Communications in Medicine and is a standard mainly used to distribute and view medical image files such as X-Rays, CT scans, MRIs, and ultrasound images.       We are all used to the XRay film sheets we get from a hospital when we go in for a scan. Very cumbesome, difficult to archive, there are hospitals with librarians just to catalog and maintain these films

Charles Vazhttp://www.blogger.com/profile/11225727377011899751noreply@blogger.com0tag:blogger.com,1999:blog-8347139.post-1095402892001676582004-09-17T00:33:00.000-07:002007-04-22T20:50:59.574-07:00

Read on "Architecture Synthesis and Analysis Process (ASAP)" by Paul C. Brown at the WWISA mag "Software Architect" http://www.wwisa.org/softwarearchitect/

Charles Vazhttp://www.blogger.com/profile/11225727377011899751noreply@blogger.com0tag:blogger.com,1999:blog-8347139.post-1095341412122578702004-09-16T06:26:00.000-07:002006-09-28T18:23:23.130-07:00

using System;using System.Management;namespace GetMACAddress{class Class1{ [STAThread] static void Main(string[] args) { ManagementObjectSearcher query = null; ManagementObjectCollection queryCollection = null; try { query = new ManagementObjectSearcher(new ObjectQuery("Select MacAddress,IPAddress from Win32_NetworkAdapterConfiguration whereIPEnabled=TRUE")) ; queryCollection = query.Get(

Charles Vazhttp://www.blogger.com/profile/11225727377011899751noreply@blogger.com0tag:blogger.com,1999:blog-8347139.post-1095341027176467942004-09-16T06:21:00.000-07:002004-09-17T04:27:34.743-07:00

sp_dropserver 'old SQL Server server name' GO sp_addserver 'new computer name', 'local' GO Stop and Restart SQL Server service Now Run SELECT @@SERVERNAME to verify the changes

Charles Vazhttp://www.blogger.com/profile/11225727377011899751noreply@blogger.com0tag:blogger.com,1999:blog-8347139.post-1095340706645397012004-09-16T06:17:00.000-07:002004-09-16T06:18:26.646-07:00

PERFORMANCE MONITOR -- Counters; Understand thresholds CLRPROFILER -- Allocations; Survivors; Leaking (Another Profiler is from DevPartner) WINDBG -- Dumps; Hangs, Crashes, Blocks, Memory, etc VADUMP -- Working set; Memory, etc NETMON -- Data on Wire; Bandwidth and Latency

Charles Vazhttp://www.blogger.com/profile/11225727377011899751noreply@blogger.com0tag:blogger.com,1999:blog-8347139.post-1095340610964487032004-09-16T06:16:00.000-07:002004-09-16T06:16:50.963-07:00

-- PInvoke is a fast way to invoke unmanaged code -- The CLR does expensive CAS security stack walks on every call into that method to insure that all callers have unmanaged code access permissions. For non-security sensitive scenarios, disable the security check for better performance. // Use only when security is not a major concern [DllImport("kernel32.dll"), SuppressUnmanagedCodeSecurity]

Charles Vazhttp://www.blogger.com/profile/11225727377011899751noreply@blogger.com0tag:blogger.com,1999:blog-8347139.post-1095340555354622232004-09-16T06:15:00.000-07:002005-02-10T01:50:52.596-08:00

Restrict physical access to the SQL Server computer. Always lock the server while not in use. Make sure, all the file and disk shares on the SQL Server computer are read-only. In case you have read-write shares, make sure only the right people have access to those shares. Use the NTFS file system as it provides advanced security and recovery features. Prefer Windows authentication to mixed mode.

Charles Vazhttp://www.blogger.com/profile/11225727377011899751noreply@blogger.com0tag:blogger.com,1999:blog-8347139.post-1095340433732123022004-09-16T06:13:00.000-07:002004-09-16T06:13:53.733-07:00

Use SET NOCOUNT ON at the beginning of your SQL batches, stored procedures and triggers in production environments, as this suppresses messages like '(1 row(s) affected)' after executing INSERT, UPDATE, DELETE and SELECT statements. This inturn improves the performance of the stored procedures by reducing the network traffic.

Charles Vazhttp://www.blogger.com/profile/11225727377011899751noreply@blogger.com0tag:blogger.com,1999:blog-8347139.post-1095339436559393112004-09-16T05:57:00.000-07:002007-09-06T10:44:19.146-07:00

Performance Comparison: Data Access Techniques OR MSDN Search: Performance Comparison: Data Access TechniquesDataReader is the best when Forward Read-Only access to data is required.DataSets are useful when you need the data, schema and maybe updateable options.The new DataSet is .NET 2.0 also does away with the problem of using a DataSetSurrogate in .NET 1.1 as 1.1 datasets are transmitted in

Charles Vazhttp://www.blogger.com/profile/11225727377011899751noreply@blogger.com0tag:blogger.com,1999:blog-8347139.post-1095339037990814752004-09-16T05:45:00.000-07:002004-09-16T05:50:37.990-07:00

Yukon is moving towards a subset of the .NET runtime engine inside the SQL Server Database. So, what's the history behind this move? Stored Procedures -- the pre-cursors -- business logic being embedded in the database is a need -- Why? -- see below.There are many advantages in using stored procedures, including the following:· They are typically the most efficient way to access the database.·

Charles Vazhttp://www.blogger.com/profile/11225727377011899751noreply@blogger.com0tag:blogger.com,1999:blog-8347139.post-1095337638134893972004-09-16T05:26:00.000-07:002004-09-16T05:27:18.136-07:00

1. Follow the rules in http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpguide/html/cpconcominteropsamplecomclientnetserver.asp 2. For the .NET interface the following attributes are necessary [ComVisible(true)] [Guid("e15af71b-9860-36e5-af62-9f405c231daa")] public interface ILoan { } 3. The interface assembly should be strong named and registered in the GAC [assembly:

Charles Vazhttp://www.blogger.com/profile/11225727377011899751noreply@blogger.com0tag:blogger.com,1999:blog-8347139.post-1095337498671345362004-09-16T05:03:00.000-07:002007-09-06T18:14:42.986-07:00

1. Add reference to ActiveDS.tlb (still most AD interfaces are in COM)2. Following is code from a lot of online sites merged/tested together for a complete working solution.Building Secure ASP.NET Applications: Authentication, Authorization, and Secure Communicationhttp://www.15seconds.com/issue/020730.htmhttp://directoryprogramming.net/forums/thread/1531.aspxUse RoleManager for Windows

Charles Vazhttp://www.blogger.com/profile/11225727377011899751noreply@blogger.com0tag:blogger.com,1999:blog-8347139.post-1095336016554814582004-09-16T04:58:00.000-07:002004-09-16T05:02:13.850-07:00

Service Pack 4 (SP4) on a Windows 2000 domain controller does not grant the IWAM account name SeImpersonatePrivilege; programs that use impersonation may not function properly. Solution: Click on the following from Control Panel on the Win 2K SP4 Server - Domain Controller Administrative Tools -> Domain Controller Security Policy -> Security Settings -> Local Policies -> User Rights Assignment

Charles Vazhttp://www.blogger.com/profile/11225727377011899751noreply@blogger.com0tag:blogger.com,1999:blog-8347139.post-1095335847953837892004-09-16T04:56:00.000-07:002004-09-16T04:57:27.953-07:00

Make sure your run aspnet_regiis -r from the appropriate .net framework dir For other than ASP.NET issues refer to the registry setting fix of MS OnlyUseLatestCLR = 0 or 1 You can activate this switch either by setting a registry key or by setting an environment variable: Activate/Deactivate the Switch Using a Registry Key Turn on the switch using the following registry setting:

Charles Vazhttp://www.blogger.com/profile/11225727377011899751noreply@blogger.com0tag:blogger.com,1999:blog-8347139.post-1095335790638072152004-09-16T04:54:00.000-07:002004-09-16T04:56:30.640-07:00

Depending on the type of application you are creating, .NET has three different global exception handlers. For ASP.NET look at:System.Web.HttpApplication.Error eventNormally placed in your Global.asax file. For console applications look at:System.AppDomain.UnhandledException eventUse AddHandler in your Sub Main. For Windows Forms look at:System.Windows.Forms.Application.ThreadException eventUse

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