Answer Questions

• gocards9999 Are interfaces for behavioral overloading only?

  This question comes from the new approaches being suggested when designing services with WCF and even ASMX 2. The approach is one that uses interfaces (or abstract classes) to focus on the method signatures and avoid diving directly into implementation when desiging services. This looks like a half-way contract first approach that is meant to help developers focus on what makes a service reusable (strong typing, message orientation, explicit met ...Show All

• TOM A. Middle Tier Design Question

  Let's say I have two applications that needs to communicate with each other. In a nutschell, when I design an application (not always of course), I have my business component (Facade Layer), data access component, and my domain objects (DTO's), which makes up three seperate assemblies. Now, let's say I am building the Sales & Marketing application that needs to communicate with the Accounting components. I am not sure if the Sales ap ...Show All

• Alaa_fcis Middle Tier Design Question

  Let's say I have two applications that needs to communicate with each other. In a nutschell, when I design an application (not always of course), I have my business component (Facade Layer), data access component, and my domain objects (DTO's), which makes up three seperate assemblies. Now, let's say I am building the Sales & Marketing application that needs to communicate with the Accounting components. I am not sure if the Sales ap ...Show All

• Millercentral Design patterns book

  Hi all, I'm looking for good "Design Patterns" book for studying. Is there one with .Net Best regards... I liked this one, but not .Net specific: http://www.amazon.com/gp/product/0321247140/sr=8-3/qid=1147962413/ref=pd_bbs_3/103-9550098-6672633 %5Fencoding=UTF8 This one is highly rated. It's on my bookshelf, but I haven't got to it: http://www.amazon.com/gp/product/0596007124/sr=8-2/qi ...Show All

• Ixnatifual Design pattern for interactive communications between users

  We have a need for two users to communicate interactively over a VPN connection through a DMZ. We are considering a smart client (internet side) talking to a web server (in the DMZ) talking to a smart client (within our network). Wondered if anyone knew of a design pattern (or any other solution) to this problem. There are a few ... Out of curiosity, you mention that your were intending to use the ...Show All

• bulklodd IntraLayer Communication

  Typically when passing data between various layers normally most recommend use of custom entities because it allows the developer to write code which gives finer control to the data. The other means could be usage of dataset, typed dataset. The way I look at it, custom entities take time to code and at the same time one needs to also write logic for retrieving data from database and looping record per record into an array of custo ...Show All

• westlakechen Has anyone received this type of error?

  When trying to connect to an alias, via UNC, for a host name registered in the DNS database, it works fine if the actual host name or IP address is used. If the alias name is used the following error is received. \\server alias\share "You were not connected because a duplicate name exists on the network. Go to System in Control Panel to change the computer name and try again. Any assistance, insight or experiences would be apprecia ...Show All

• svincoll4 Windows Service event description

  Please inform me if there is a better forum for this question. We have a Windows Service that posts events to the event log. When looking at these events in the Windows Event Viewer, a URL labeled "For more information, see Help and Support Center at http://go.microsoft.com/fwlink /events.asp" is added to the bottom of all our descriptions. Obviously, the Microsoft Help and Support Center has no knowlwdge of our service. How do we replace ...Show All

• Argonautic Smart Client for Web applications

  Is that Smart Client architecture can be used only for Windows forms (Windows Application) Can it be used for Web application If so can you suggest article for the same, as far as my research in msdn I was able to find smart client only for windows form. I need an article on implementing smart client for Web applications. Pls suggest me asap. Smart Clients are only possible with Win. applications. a usefull link: Smart Cli ...Show All

• Philippe31 Smart Client and the Mac

  Is it possible yet to develop a smart client application and deploy to the Mac as well as the PC I'm assuming this depends on whether there's a viable CLR for the Mac And what about deploying to Linux is this possible see the mono project ... http://www.mono-project.com/Main_Page runs in linux and on a mac. Cheers, Greg ...Show All

• Raichur biztalk Configuration problem

  Hi, I have installed biztalk server 2004 on windows 2000 professional machine which is having local sql server 2000 client. The sql server 2000 database resides on another wondows 2003 server machine. When i am configuring biztalk server on my local machine(through configframework), it gives me following error Failed to create SQL login for biztalk administrators group on database server "RemoteWindows2003ServerName". Windows ...Show All

• gwong685 Why use an application server?

  My boss wants me to explain to him the advantages of having an application server in our web app. Currently our web app talks directly to SQL Server. What are some of the pros and cons of having an application server in this type of application --SY There are two different concerns that you have to consider answering this question. #1 is whether or not it is advantageous to have a 3-layered logic ...Show All

• AppzGuy Does Windows Workflow Muddy The Water?

  I have been trying to get excited about Windows Workflow Foundation from an architectural perspective but after having a conversation with one of my colleagues I sort of started to question the value of such a framework. Here's why.... 1. Does Windows Workflow run the risk of allowing line of business applications to deliver workflows that might actually be valuable to an entire enterprise In other words ... if I have a true workflow and I d ...Show All

• oldolddba Choosing deisng pattern

  Hi. Your help is very appreciated. I want to build an app that is basically a client db. For that I am contructing a "client" class (that has - name, address, contact details etc...). However, I want to enable my users, to add properties to my "client" class WITOUHT needing to change my code . i.e. some clients might require an "age" and "annual income" properties as part of the "client" class. Which design pattern(s) might assist me ...Show All

• redcrusher Lazy linking pattern

  Lazy loading is a familiar pattern for hydrating business objects but has the drawback of being expensive when many objects need to retrieved (through many SQL queries). In a situation where there are perhaps 20 classes of object each with only 5 to 100 instances of each class, it may make sense to load each of the instances of each of the classes in one go. However linking these classes might be best done as required (hence 'lazy l ...Show All