DotNetKicks.com : Stories kicked by crpietschmann

C# 5 PropertyChanged - No more magic strings!

Thu, 22 Sep 2011 15:30:01 GMT

Changes in C# 5 mean no more NotifyPropertyChanged("SomeVariable"), which is a common source of bugs. It also means we no longer have to suffer the performance degradation associated with using workarounds such as lambda's just for the sake of compile-time checking. From here on out, the compiler does the work for us.

3 ways to Sort in Descending order via lambdas

Mon, 12 Sep 2011 14:40:15 GMT

3 ways to Sort in Descending order via lambdas In C# , one can sort the List of Objects using Lambdas easily . Until now , i found the LINQ Query to be more easy to sort but after using the Lamba expression , i feel that the lambda expression can also be used effectively to sort in descending order . For example , i use the below class for the datapublic class Movie { public string MovieName { get; set; } public string Actor { get; set; } }

C# compiler uses Duck-Typing, not IEnumerable, for foreach loops

Fri, 09 Sep 2011 18:13:16 GMT

Turns out that according to this post, and the C# 1.0 specification, that foreach loops in C# do not use IEnumerable (as found in the documentation) but rather duck-typing. Not necessarily consequential to our every day programming lives, but interesting nonetheless.

Share C# Anonymous Types across Functions and Scope

Mon, 29 Aug 2011 01:34:06 GMT

So earlier today I was lamenting that an anonymous type can't be shared between functions with Wes Dyer, when he said "Well actually they can..."

15 Awesome ASP.NET Tips

Sat, 06 Aug 2011 16:01:44 GMT

Some cool ASP.NET tips and tutorials you will find useful

Thoughts on Micro-ORMs

Sat, 06 Aug 2011 15:44:03 GMT

Chris Brandsma discusses some of the more popular micro-ORMs available today. In the comments, readers point out other alternatives to those listed by Chris. For those of you looking for a simple X vs Y comparison of micro-ORMs like Dapper, Simple.Data, and Massive, this may come in handy.

Minimalist Coding Guidelines

Sat, 06 Aug 2011 15:44:03 GMT

A nice write-up on generic coding standards that can be applied to any language by any programmer. There are years of experience (42, according to the author) poured into this piece, and it shows.

Fun With jQuery Deferred

Fri, 11 Feb 2011 16:49:32 GMT

If you've upgraded to the recently released jQuery 1.5 you may have heard about the fancy new AJAX facilities that allow you to define things like this: var jax = $.ajax({ url: '/some/url' }) jax.success(function() { alert("It worked!");") });

ASP.NET MVC Tip #48 - Disable Request Validation

Thu, 03 Feb 2011 17:46:30 GMT

By default, the ASP.NET MVC framework prevents you from submitting form data that contains potentially malicious content. This feature is called request validation. This is a good feature. You don't want people sneaking scripts into your website that can steal passwords or other sensitive user information. Normally, you want to leave request validation enabled. Unlike a Web Forms application, you cannot disable request validation by using the <%@ Page ValidateRequest="false" %> directive. You also cannot disable request validation in the web configuration (web.config) file. If you want to disable request validation then you must use the [ValidateInput] attribute. You apply the [ValidateInput] attribute to the controller action that accepts the form input.

ASP.NET MVC 3 RTM Released!

Fri, 14 Jan 2011 03:12:31 GMT

ASP.NET MVC 3 is a framework for developing highly testable and maintainable Web applications by leveraging the Model-View-Controller (MVC) pattern. The framework encourages developers to maintain a clear separation of concerns among the responsibilities of the application - the UI logic using the view, user-input handling using the controller, and the domain logic using the model. ASP.NET MVC applications are easily testable using techniques such as test-driven development (TDD). The installation package includes templates and tools for Visual Studio 2010 to increase productivity when writing ASP.NET MVC applications. For example, the Add View dialog box takes advantage of customizable code generation (T4) templates to generate a view based on a model object. The default project template allows the developer to automatically hook up a unit-test project that is associated with the ASP.NET MVC application. Because the ASP.NET MVC framework is built on ASP.NET 4, developers can take advantage of existing ASP.NET features like authentication and authorization, profile settings, localization, and so on.

Use Non-default Membership Provider for WCF Authentication Service

Tue, 23 Nov 2010 20:09:43 GMT

This topic shows how to programmatically select the membership provider when you call the ASP.NET authentication service by using Windows Communication Foundation (WCF). You can use a non-default membership provider when you have to authenticate users by using different membership providers, based on information that you get at run time. To authenticate through a non-default membership provider, you create an event handler for the Authenticating event.

Silverlight Cached Assemblies and you can to!

Sun, 31 Oct 2010 16:02:48 GMT

One of the new features I mentioned in my What's new/changed post on Silverlight 3 is the fact that any application developer can take advantage of the cached assembly functionality provided by Silverlight. Let me show you how and start with the current situation.

IronRuby and IronPython to run by the Community, IR Tools for VS ++

Sat, 23 Oct 2010 17:15:52 GMT

So much going on in the DLR world - IronRuby and IronPython are officially handed over to the community, IronRuby 1.1.1 is released including IronRuby tools for Visual Studio and compatibility with Ruby 1.9.2. Good times!

Known Unknown of System Stored Procedure of sys.sp_tables

Mon, 18 Oct 2010 09:00:52 GMT

Do you know even simple query like sys.tables can kill the performance of your system. There are better thing to use: Read more...

Silverlight: Embed IronRuby/DLR Scripting within XAML using IValueConv

Sat, 02 Oct 2010 21:50:55 GMT

After I wrote the "Intro to IronRuby/DLR Scripting in C# Silverlight 4 Application" post, I came across an interesting series on embedding DLR scripts in XAML with WPF. This is an interesting series, although the code doesn't run in Silverlight, due to the fact that Silverlight is only a subset of WPF and doesn't support the System.Windows.Markup.MarkupExtension class. I test out a couple things in Silverlight, and I was able to get similar DLR scripting functionality working under Silverlight using a combination of a simple, custom IValueConverter and a custom UserControl class.

Dynamic XAP Discovery with Silverlight MEF

Fri, 01 Oct 2010 03:03:13 GMT

What's missing, it seems, is a mechanism to dynamically discover the XAPs that are available on the server. If I'm using MEF to support a plug-in architecture, for example, I might want to drop a XAP containing a new plug-in into a folder on the server and have the plug-in automatically show up in my browser the next time the application runs. MEF won't do that on its own, but it will if you lend it a helping hand. After discussing various ways to do dynamic discovery in MEF with Jeremy Likness, I wrote a sample to demonstrate a technique based on passing InitParams to the Silverlight control. The technique is pretty simple. You begin by modifying the ASPX file that hosts your Silverlight application. First, you add an empty InitParams <params> element to the <object> element that instantiates the Silverlight control, and you include an ID and a runat="server" attribute so you can manipulate the element from server-side code:

Intro to IronRuby/DLR Scripting in C# Silverlight 4 Application

Wed, 29 Sep 2010 17:45:44 GMT

I thought I'd share what I'm learning about adding IronRuby scripting to Silverlight 4 applications. I'm also focusing on C# as the host language, but the .NET object and methods used will be the same from VB.NET.

Embedding DLR Scripts in XAML- Part 2, A Simple DLR Markup Extension

Wed, 29 Sep 2010 16:30:20 GMT

This article demonstrates how to embed DLR scripts in XAML using a custom MarkupExtension. The scripting language can be any language supported by the DLR, such as Python or Ruby.

Use New Bing Maps Road Imagery In Silverlight Map Control

Fri, 20 Aug 2010 01:20:54 GMT

Recently the consumer facing Bing Maps site changed the map imagery that is displayed for the Road map mode. This map imagery has not been officially made available for Bing Maps for Enterprise developers to use within their applications. The imagery is only officially available to the Bing Maps consumer website. Unofficially, you can still access the imagery if you know the URL format to get it. Below is an example of using the URL format for the new imagery to display it within the Bing Maps Silverlight Control.

Lookups in DataGrid and DataForm with RIA Services

Sun, 23 May 2010 11:23:15 GMT

While off reading random blog posts on the tubes, I stumbled upon a post that describes a 101-level scenario of using lookup data in the DataGrid and DataForm with RIA Services. The author was struggling to find a solution for the problem and was clearly frustrated.

Simplify, Shorten and Speed Up Your LINQ Statements with "Let"

Wed, 12 May 2010 18:45:52 GMT

Details how using the "let" keyword can make your LINQ statements shorter and faster.

Announcing availability of Visual Studio 2010 and .NET Framework 4

Thu, 15 Apr 2010 14:00:01 GMT

I am very excited to announce the availability of Visual Studio 2010 and .NET Framework 4 on April 12th.

MVC Portable Areas - Static Files as Embedded Resources

Tue, 06 Apr 2010 12:31:39 GMT

This is the third post in a series related to build and deployment considerations as I've been exploring MVC Portable Areas. In the last post, I walked through a convention for managing static files. In this post I'll discuss another approach to manage static files (e.g., images, css, js, etc.). With this approach, you *also* compile the static files as embedded resources into the assembly similar to the *.aspx pages. Once again, you can set this to happen automatically by simply modifying your *.csproj file to include the desired extensions so you don't have to remember every time you add a file:

World Shapefile Download and Upload to Database - Spatial Database

Fri, 02 Apr 2010 16:15:02 GMT

This is very unique post and explains how to create Map of the world using Spatial Data

How to Access Assembly Version Info in Silverlight

Wed, 24 Mar 2010 13:40:53 GMT

I need to access the AssemblyVersion info from my assembly, and I was going to use something like this: Assembly.GetExecutingAssembly().GetName().Version; But, I see that GetName() is [SECURITY CRITICAL]. How can I get a hold of a Version object??