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VS2010 Launch Presentations

Last week I was in Vegas to present at the DevConnections / VS2010 Launch event. The show was well-attended and everybody I spoke to agreed it was educational and enjoyable. My three talks were all on Wednesday, 14 April 2010, including one at 8am for which I was impressed to see a large turnout in attendance. Pragmatic ASP.NET Tips, Tricks, and Tools My first session was on tips, tricks, and tools for ASP.NET developers. This is a talk Ive given in past years, but which I refine every time. I usually like to have a full session to devote to tools, and a separate talk just for Tips and Tricks, but for this show I was only given the one 75-minute slot, so I had to cut some materials to make things fit. The talk went well, all the demos work, and the attendees seemed to enjoy it, and I like giving it, so hopefully I can continue to present on this topic in future DevConnections shows. Download the ASP.NET Tips, Tricks, and Tools slides and demos. Whats New in ASP.NET MVC 2 My second talk of the day followed immediately after the Tips and Tricks talk, and was a brand new talk for me. I have to throw out a thank-you to Phil for letting me see his MIX slide deck before he gave his talk, as that was a big help. The official whats new document online is also worth checking out if youre interested in this subject. Download the Whats New in ASP.NET MVC 2 slides and demos. SOLIDify Your ASP.NET MVC 2 Application Just because youre using a ASP.NET MVC doesnt mean your code cant still end up being a big ball of mud. This session describes a number of principles of software design that can help ensure applications remain loosely-coupled and malleable even as they age and increase in features and complexity. This was my last talk of the day and did have one minor demo failure involving a database constraint. Ive given this talk many times before, and in this case I had to fit it into a 60-minute timeslot, so Im not sure I had quite enough time to drive home all of the concepts to everyone in the audience. That said, I did hear a number of positive comments on how the talk went, so thats encouraging. Download the SOLIDify Your ASP.NET MVC 2 Application slides and demos. In my sessions, I promised to have these posted by the end of the weekend theyre going up at 10pm Sunday night (my time) 2 hours to spare! Enjoy! Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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CSS vendor prefixes redux

Well, reactions to my proposal toabolish vendor prefixes are mixed, and I might have overshot my target here.Eric Meyer,Jonathan Snook, andStephen Hay reacted to my post,and it’s clear that they believe vendor prefixes ought to continue to exist. Manycommenters said the same thing, although some other commenters agreed with me.Daniel Glazman, W3C CSS co-chair, reactedin a similar vein, and agreed that there is something wrong with the current vendor prefiximplementation. He even welcomed the discussion....Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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Detect Unicode Usage in SQL Column

One optimization you can make to a SQL table that is overly large is to change from nvarchar (or nchar) to varchar (or char). Doing so will cut the size used by the data in half, from 2 bytes per character (+ 2 bytes of overhead for varchar) to only 1 byte per character. However, you will lose the ability to store Unicode characters, such as those used by many non-English alphabets. If the tables are storing user-input, and your application is or might one day be used internationally, its likely that using Unicode for your characters is a good thing. However, if instead the data is being generated by your application itself or your development team (such as lookup data), and you can be certain that Unicode character sets are not required, then switching such columns to varchar/char can be an easy improvement to make. Avoid Premature Optimization If you are working with a lookup table that has a small number of rows, and is only ever referenced in the application by its numeric ID column, then you wont see any benefit to using varchar vs. nvarchar. More generally, for small tables, you wont see any significant benefit. Thus, if you have a general policy in place to use nvarchar/nchar because it offers more flexibility, do not take this post as a recommendation to go against this policy anywhere you can. You really only want to act on measurable evidence that suggests that using Unicode is resulting in a problem, and that you wont lose anything by switching to varchar/char. Obviously the main reason to make this change is to reduce the amount of space required by each row. This in turn affects how many rows SQL Server can page through at a time, and can also impact index size and how much disk I/O is required to respond to queries, etc. If for example you have a table with 100 million records in it and this table has a column of type nchar(5), this column will use 5 * 2 = 10 bytes per row, and with 100M rows that works out to 10 bytes * 100 million = 1000 MBytes or 1GB. If it turns out that this column only ever stores ASCII characters, then changing it to char(5) would reduce this to 5*1 = 5 bytes per row, and only 500MB. Of course, if it turns out that it only ever stores the values true and false then you could go further and replace it with a bit data type which uses only 1 byte per row (100MB total). Detecting Whether Unicode Is In Use So by now you think that you have a problem and that it might be alleviated by switching some columns from nvarchar/nchar to varchar/char but youre not sure whether youre currently using Unicode in these columns. By definition, you should only be thinking about this for a column that has a lot of rows in it, since the benefits just arent there for a small table, so you cant just eyeball it and look for any non-ASCII characters. Instead, you need a query. Its actually very simple: SELECT DISTINCT(CategoryName)FROM CategoriesWHERE CategoryName <> CONVERT(varchar, CategoryName) Summary Gregg Stark for the tip. Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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OData Query Option top Forces Data To Be Sorted By Primary Key

This post show a simple WCF Data Service (Formerly known as ADO.NET Data Services) project that retrieves data using the Reflection Provider for accessing data. It goes on to show that using $top... This site is a resource for asp.net web programming. It has examples by Peter Kellner of techniques for high performance programming...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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SQL SERVER Subquery or Join Various Options SQL Server Engine knows the Best

This is followup post of my earlier article SQL SERVER Convert IN to EXISTS Performance Talk, after reading all the comments I have received I felt that I could write more on the same subject to clear few things out. First let us run following four queries, all of them are giving exactly [...]...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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Value Not Updating? Check for Caching!

Heres todays dumb mistake: A value that was supposedly updated by a routine on one page, wasnt changing on another ASP.NET screen. I carefully traced the progress of the update and everything looked right all the way to the database. After puzzling...(read more)...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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Internet Explorer Cumulative Update Releasing Out-of-Band

This is an advance notification of an out-of-band security bulletin that Microsoft is intending to release on March 30, 2010. The bulletin is being released to address attacks against customers of Internet Explorer 6 and Internet Explorer 7. Users of Internet Explorer 8 and Windows 7 are not vulnerable to these attacks. The vulnerability used in these attacks, along with workarounds, is described in Microsoft Security Advisory 981374....Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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JustCode – Color Identifier Basics

Color identifiers make it easier for developers to quickly read and understand the code on screen. One of the many features provided by JustCode is the ability to colorize additional items that Visual Studio does not allow you to colorize by default. The colorization of items such as methods, properties, events, variables, and method parameters can easily be tweaked to your specific needs. Enable / Disable Color Identifiers In the recent release, we turned this option on by default. You can enable/disable code colorization by going to the JustCode menu in Visual Studio, selecting options, then selecting the general section in the left window. When you scroll down on general setting you will see a check box that says Color Identifiers. Check or uncheck this box to enable/disable code colorization. Color identifiers option Adjust Color Identifiers Adjusting the color identifiers in JustCode is done in the same place ...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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Transparent Data Encryption

Transparent Data Encryption is designed to protect data by encrypting the physical files of the database, rather than the data itself. Its main purpose is to prevent unauthorized access to the data by restoring the files to another server. With Transparent Data Encryption in place, this requires the original encryption certificate and master key. It was introduced in the Enterprise edition of SQL Server 2008. John Magnabosco explains fully, and guides you through the process of setting it up....Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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Inconsistencies in Health Monitoring Between WebForms and MVC

As I have written and spoken on numerous occasions, Health Monitoring happens to be one of my favorite features in ASP.NET. In WebForms, it's a path well trodden. However, while building Morts & Elvises with MVC2, I ran into a strange inconsistency, which I'd like to describe here. WebForms Whenever a WebForm throws an unhandled exception, at the very least the error is written to the system's even log. Suppose we have this silly simple page method: protected override void OnLoad...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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SQLAuthority News SQL Server Technology Evangelists and Evangelism

This is the exact conversation that I had with three people during the recent SQL Server Public Training. Person 1: “Are you an SQL Server Evangelist?” Pinal : “No, but Vinod Kumar is.” Person 1: “Who are you? Person 2: “He is Pinal, haha!” Person 1: “I know that, but dont you evangelize SQL Server [...]...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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test post, not public

test test test more test more test more test more test This site is a resource for asp.net web programming. It has examples by Peter Kellner of techniques for high performance programming...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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Stumbling Through: Visual Studio 2010 (Part II)

I would now like to expand a little on what I stumbled through in part I of my Visual Studio 2010 post and touch on a few other features of VS 2010. Specifically, I want to generate some code based off of an Entity Framework model and tie it up to an actual data source. Im not going to take the easy way and tie to a SQL Server data source, though, I will tie it to an XML data file instead. Why? Well, why not? This is purely for learning, there are probably much better ways to get strongly-typed classes around XML but it will force us to go down a path less travelled and maybe learn a few things along the way. Once we get this XML data and the means to interact with it, I will revisit data binding to this data in a WPF form and see if I cant get reading, adding, deleting, and updating working smoothly with minimal code. To begin, I will use what was learned in the first part of this blog topic and draw out a data model for the MFL (My Football League) - I dont want the NFL to come down and sue me for using their name in this totally football-related article. The data model looks as follows, with Teams having Players, and Players having a position and statistics for each season they played: Note that when making the associations between these entities, I was given the option to create the foreign key but I only chose to select this option for the association between Player and Position. The reason for this is that I am picturing the XML that will contain this data to look somewhat like this: <MFL> <Position/> <Position/> <Position/> <Team> <Player> <Statistic/> </Player> </Team> </MFL> Statistic will be under its associated Player node, and Player will be under its associated Team node no need to have an Id to reference it if we know it will always fall under its parent. Position, however, is more of a lookup value that will not have any hierarchical relationship to the player. In fact, the Position data itself may be in a completely different xml file (something Id like to play around with), so in any case, a player will need to reference the position by its Id. So now that we have a simple data model laid out, I would like to generate two things based on it: A class for each entity with properties corresponding to each entity property An IO class with methods to get data for each entity, either all instances, by Id or by parent. Now my experience with code generation in the past has consisted of writing up little apps that use the code dom directly to regenerate code on demand (or using tools like CodeSmith). Surely, there has got to be a more fun way to do this given that we are using the Entity Framework which already has built-in code generation for SQL Server support. Lets start with that built-in stuff to give us a base to work off of. Right click anywhere in the canvas of our model and select Add Code Generation Item: So just adding that code item seemed to do quite a bit towards what I was intending: It apparently generated a class for each entity, but also a whole ton more. I mean a TON more. Way too much complicated code was generated now that code is likely to be a black box anyway so it shouldnt matter, but we need to understand how to make this work the way we want it to work, so lets get ready to do some stumbling through that text template (tt) file. When I open the .tt file that was generated, right off the bat I realize there is going to be trouble there is no color coding, no intellisense no nothing! That is going to make stumbling through more like groping blindly in the dark while handcuffed and hopping on one foot, which was one of the alternate titles I was considering for this blog. Thankfully, the community comes to my rescue and I wont have to cast my mind back to the glory days of coding in VI (look it up, kids). Using the Extension Manager (Available under the Tools menu), I did a quick search for tt editor in the Online Gallery and quickly found the Tangible T4 Editor: Downloading and installing this was a breeze, and after doing so I got some color coding and intellisense while editing the tt files. If you will be doing any customizing of tt files, I highly recommend installing this extension. Next, well see if that is enough help for us to tweak that tt file to do the kind of code generation that we wantDid you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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Impressions of Pivotal Tracker

Pivotal Tracker is a free, online agile project management system. Ive been using it recently to better communicate to customers about the current state of our project. In Pivotal Tracker, the unit of work is a story and stories are arranged into iterations or delivery cycles. Stories can be any level of granularity you want, but the idea is to use stories to communicate clearly to customers, so you dont want to write a novel. You especially dont want to write a list of detailed programming tasks. A good story for a point of sale system might be: Allow managers to override the price of an item while ringing up a customer. A less useful story: Script out the process of adding a manager flag to the user table and stage that script into the deploy directory. Stories are estimated using a point scale, by default 1, 2 or 3. Iterations are then automatically laid out by combining enough tasks to fill the point total for that period of time. You have to start with a guess on how many points your team can do in an iteration, then adjust with real data as you complete iterations. This is basic agile methodology, but where Pivotal Tracker adds value is that it automatically and graphically lays out iterations for you on your project site. This makes communication and planning easy. Compiling release notes is no longer painful as it has been clear from the outset what work is going on. While I much prefer Pivotal Trackers customer facing interface over what we used previously (TFS), I see a couple of gaps. First, I have not able to make much headway with the reporting tools. Despite my complaints about TFS, it can produce some nice reports. Second, its not clear where if at all, Id keep track of purely internal tasks. Im talking about server maintenance, cleaning up source control, checking back on some code which you never quite felt right about. Theres no purpose in cluttering up an iteration backlog with these items, but if you dont track them, you lose them. Im not sure what a good answer for that is. One gap I thought Id see, which I dont, is more granular dev tasks. If Im implementing a story, Ill write out the steps and track my progress, but really, those steps arent useful to anybody but me. The only time Ive found that level of detail really useful is when my tasks are defined at too high a level anyway or when Im working with someone who needs more coaching and might not be able to finish a story in time without some scaffolding to get them going. You can learn more about Pivotal Tracker at: http://www.pivotaltracker.com/learnmore. --- Relevant Links --- A good intro to stories: http://www.agilemodeling.com/artifacts/userStory.htmDid you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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Q1 2010 SP1 versions of Telerik ASP.NET AJAX and MVC suites are live

The Q1 2010 SP1 releases of RadControls for ASP.NET AJAX and Telerik Extensions for ASP.NET MVC are available for download. Lots of fixes and several new features/enhancements are incorporated in these SP releases. The highlight with this drop we announce official support for VS 2010/.NET 4 RTM. Find more details browsing the online demos, documentation and release notes below: RadControls for ASP.NET AJAX Release notesDemos DocumentationTelerik Extensions for ASP.NET MVCRelease notes Demos DocumentationDid you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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MIX10 Talk - Slides and Code

At MIX10, I presented the Developing with WCF RIA Services Quickly and Effectively talk. For the demos I used a BookClub application - the scenario is a team application for team members to use to share books and browse/search/request shared books. The following are the concepts that the demos and code cover: [Full post continued here...]...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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Manipulating Images with .NET Programs

Many image processing techniques are simpler than you might expect and can be implemented easily in C# or Visual Basic....Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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New Development Snapshot

I've integrated OpenJDK 6 b18. If you're building IKVM from source, you need to download openjdk6-b18-stripped.zip. Changes: Integrated OpenJDK 6 b18. Fixed IKVM.Reflection bug in version number handling (for version parts 32K). Added support for generic parameter custom attributes to IKVM.Reflection (this is missing from June 2006 ECMA CLI spec). Fixed IKVM.Reflection Type.FullName bug. Nested types can also have a namespace...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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how to bind data binding source to group radio buttons

Hi I am working on windows c# application (visual studio 20008).In my form I have 5 Radio buttons ,grouped by group box. I have to bind this radio button to data binding source. this.rdoptPlus.DataBindings.Add(new Binding("Checked", MemberDefinitionsBindingSource, "UnaryOperator", true)); this.rdoptMinus.DataBindings.Add(new Binding("Checked", MemberDefinitionsBindingSource, "UnaryOperator", true)); i am unable to bind single datacolum to 5 radio buttons,please help me read moreBy masuri suhasiniDid you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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Vermont IT Jobs: Local ASP.NET Contractor possible hire

The website www.imsuperb.com is looking for an ASP.NET developer to help them out with a site update. This is a contract position that could lead to a full time job. Contact Nick Lynch at [email protected] you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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ReSharper 5.0s LINQ Refactoring Continues to be Amazing!

In this post, well take a straight forward procedure based set of code and convert it to LINQ using a ReSharper from JetBrains suggestion. The initial code is as follows: int... This site is a resource for asp.net web programming. It has examples by Peter Kellner of techniques for high performance programming...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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ReSharper 5.0s LINQ Refactoring Continues to be Amazing!

In this post, well take a straight forward procedure based set of code and convert it to LINQ using a ReSharper from JetBrains suggestion. Ive found that in general, when I do things with foreach syntax, there is often a better way in Linq to do this. The better does not jump out [...]...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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SQLAuthority News Bookmark Deprecated Database Engine Features in SQL Server 2008

When anybody asked me if any specific feature is available in SQL Server 2008 or if any feature will be disabled in future versions of SQL Server, I always point everybody to following list where all the deprecated database engine features are listed. Deprecated Database Engine Features in SQL Server 2008 R2 Deprecated Database Engine [...]...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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Erland Sommarskog: DBA of the Day

Erland is best known for his famous SQL Server site http://www.sommarskog.se/. It is plain, it has eight articles in it, it is short on jokes: However, it is hugely popular and one of the great 'essential' SQL Server sites. We sent Richard Morris to find out more about Erland, and he discovered a diligent and energetic teacher and mentor in the SQL Server Community....Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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[News] Microsoft rend public son outil de gestion des exigences sous VS 2010

Microsoft vient de rendre public son outil de gestion des exigences. Il se d?nomme Visual Studio 2010 Team Foundation Server Requirements Management Guidance (ouf!) ou VSTFSRMG pour les intimes. Cet outil est gratuit et mis ? disposition sur CodePlex.

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