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Attribute Routing

Asp.net MVC Routing determines the appropriate actions, controllers and  data for any incoming request specified in a format or a group of format sent to parse the URL's.
Routing rather than having concrete physical files uses abstract actions.

This is achieved mostly by Convention Routing. Asp.net MVC 5 as another scheme called Attribute Routing
Attribute routing helps to keep the routing definition at the close proximate of actions and controllers. This similar to Convention Routing adds the routes to Route Table. 

Enabling Attribute Routing
Use MapMvcAttributeRoutes() as shown in below code sample. This enables both Convention and Attribute routing
 
  public static void RegisterRoutes(RouteCollection routes)  
     {  
       routes.IgnoreRoute("{resource}.axd/{*pathInfo}");  
       routes.MapMvcAttributeRoutes();  
       routes.MapRoute(  
         name: "Default",  
         url: "{controller}/{action}/{id}",  
         defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional }  
       );  
     }  

Following example shows usage of Attribute Routing :-
  [Route("SingleStringParam/{FirstParam}")]  
     public ActionResult OneStringParameter(string FirstParam)  
     {  
       ViewBag.FirstParameter = FirstParam;  
       return View();  
     }  
For nullable parameters use ? in front of parameter:-
  [Route("SingleStringOptionalParam/{FirstParam?}")]  
     public ActionResult OneStringOptionalParameter(string FirstParam)  
     {  
       ViewBag.FirstParameter = FirstParam;  
       return View();  
     }  
   }  

What is better - Convention or Attribute routing, my opinion-

Attribute routing is more flexible than Convention routing as it is easy to maintain and close to the actions and controllers. Instead of managing whole list of routes in route.config, tedious to maintain, use attribute routing. 
As attribute routing are close to Controller Action it helps in debugging and troubleshooting, as well as ability to quickly search the route information in your solution.





Sitecore project - Fix broken intellisense

IntelliSense provides code completions based on language semantics and an analysis of your source code.
IntelliSense suggestions popup as you type. This might trouble you whilst setting up Sitecore new project. 


It comes with the following error-
Error CS1061 'HtmlHelper<RenderingModel>' does not contain a definition for 'Sitecore' and no extension method 'Sitecore' accepting a first argument of type 'HtmlHelper<RenderingModel>' could be found (are you missing a using directive or an assembly reference?)

Following can be checked if the Sitecore intellisense is not poping up-
1. Check if Sitecore.Mvc namespace is added in web.config. Namespace should sit in  <pages pageBaseType="System.Web.Mvc.WebViewPage"><namespaces>
2. Check if web.config file is in View folder. If not, you might need to add this.
3. Follow same as Point 1 for web.config file in View folder.
4. Next you must have referenced Sitecore.Mvc dll in the project. Set the Copy Local to true.
5. Rebuild solution and re-open the cshtml file(s).

The intellisense should now be working.

Error whilst Reverse engineer code first using EF power tool

If you receive following error - change project Target Framework to 4.5.1.

One or more errors occurred while processing template 'Entity.tt'. error : An exception was thrown while trying to compile the transformation code. The following Exception was thrown: System.ArgumentException: Empty path name is not legal. at System.IO.FileStream.Init(String path, FileMode mode, FileAccess access, Int32 rights, Boolean useRights, FileShare share, Int32 bufferSize, FileOptions options, SECURITY_ATTRIBUTES secAttrs, String msgPath, Boolean bFromProxy, Boolean useLongPath, Boolean checkHost) at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share) at System.IO.File.OpenRead(String path) at Roslyn.Utilities.FileUtilities.OpenFileStream(String path) at Microsoft.CodeAnalysis.MetadataReference.CreateFromFile(String path, MetadataReferenceProperties properties, DocumentationProvider documentation) at Microsoft.VisualStudio.TextTemplating.CompilerBridge.<>c.<.ctor>b__15_0(String x) at System.Linq.Enumerable.WhereSelectListIterator`2.MoveNext() at System.Linq.Enumerable.d__66`1.MoveNext() at System.Linq.Enumerable.d__66`1.MoveNext() at System.Linq.Buffer`1..ctor(IEnumerable`1 source) at System.Linq.Enumerable.ToArray[TSource](IEnumerable`1 source) at System.Collections.Immutable.ImmutableArray.CreateRange[T](IEnumerable`1 items) at Microsoft.CodeAnalysis.ImmutableArrayExtensions.AsImmutableOrEmpty[T](IEnumerable`1 items) at Microsoft.CodeAnalysis.Compilation.ValidateReferences[T](IEnumerable`1 references) at Microsoft.CodeAnalysis.CSharp.CSharpCompilation.WithReferences(IEnumerable`1 references) at Microsoft.CodeAnalysis.CSharp.CSharpCompilation.CommonWithReferences(IEnumerable`1 newReferences) at Microsoft.VisualStudio.TextTemplating.CompilerBridge.PrepareNewCompilation() at Microsoft.VisualStudio.TextTemplating.CompilerBridge.Compile() at Microsoft.VisualStudio.TextTemplating.TransformationRunner.Compile(String source, String inputFile, IEnumerable`1 references, Boolean debug, SupportedLanguage language, String compilerOptions)

EF Power tool for VS2015

EF power tool downloadable from here currently are not compatible with VS 2015. To make it compatible perform following steps-
2. Rename file EFPowerTools.vsix to .zip
3. Open extension.vsixmanifest file and add following 




4. Save changes and Rename file to .vsix
5. Install tool

You should now be able to see the Entity Framework option on right click of your project.

Hope this helps

Estimating the Size of a SQL Table

Estimating the Size of a Table

The following steps can be used to estimate the amount of space required to store the data in a table:

  1. Specify the number of rows present in the table:

    Number of rows in the table = Num_Rows

  2. If there are fixed-length and variable-length columns in the table definition, calculate the space that each of these groups of columns occupies within the data row. The size of a column depends on the data type and length specification. For more information, see Data Types.

    Number of columns = Num_Cols

    Sum of bytes in all fixed-length columns = Fixed_Data_Size

    Number of variable-length columns = Num_Variable_Cols

    Maximum size of all variable-length columns = Max_Var_Size

  3. If there are fixed-length columns in the table, a portion of the row, known as the null bitmap, is reserved to manage column nullability. Calculate its size:

    Null Bitmap (Null_Bitmap) = 2 + (( Num_Cols + 7) / 8 )

    Only the integer portion of the above expression should be used; discard any remainder.

  4. If there are variable-length columns in the table, determine how much space is used to store the columns within the row:

    Total size of variable-length columns (Variable_Data_Size) = 2 + (Num_Variable_Cols x 2) + Max_Var_Size

    If there are no variable-length columns, set Variable_Data_Size to 0.

    This formula assumes that all variable-length columns are 100 percent full. If you anticipate that a lower percentage of the variable-length column storage space will be used, you can adjust the result by that percentage to yield a more accurate estimate of the overall table size.

  5. Calculate the row size:

    Total row size (Row_Size) = Fixed_Data_Size + Variable_Data_Size + Null_Bitmap +4

    The final value of 4 represents the data row header.

  6. Calculate the number of rows per page (8096 free bytes per page):

    Number of rows per page (Rows_Per_Page) = ( 8096 ) / (Row_Size + 2)

    Because rows do not span pages, the number of rows per page should be rounded down to the nearest whole row.

  7. If a clustered index is to be created on the table, calculate the number of reserved free rows per page, based on the fill factor specified. For more information, see Fill Factor. If no clustered index is to be created, specify Fill_Factor as 100.

    Number of free rows per page (Free_Rows_Per_Page) = 8096 x ((100 - Fill_Factor) / 100) / (Row_Size + 2)

    The fill factor used in the calculation is an integer value rather than a percentage.

    Because rows do not span pages, the number of rows per page should be rounded down to the nearest whole row. As the fill factor grows, more data will be stored on each page and there will be fewer pages.

  8. Calculate the number of pages required to store all the rows:

    Number of pages (Num_Pages) = Num_Rows / (Rows_Per_Page - Free_Rows_Per_Page)

    The number of pages estimated should be rounded up to the nearest whole page.

  9. Calculate the amount of space required to store the data in a table (8192 total bytes per page):

    Table size (bytes) = 8192 x Num_Pages

Umbraco custom section name - How to remove square brackets?

After configuring the custom section with help of IApplication interface in Umbraco, you must have faced issue with custom section name decorated with square brackets. This issue occurs due to the translations (language) being missing in config file for custom section name.

Problem - Remove square brackets from custom section name-




Soultion - Goto Umbraco\Config\Lang folder in your umbraco project



In en.xml file, under sections area - add key with alias magic and provide a relevant name as shown below-




Done square brackets are removed and replaced with custom description. Check out-



Hope this helps.

Installing Umbraco 7+ in visual studio 2012/2013

How to install Umbraco 7+ in visual studio 2012/13 using nuget package

1. Create a blank Web application using visual studio



2. Open package manager console. Select appropriate project(web application) and hit command 
Install-Package UmbracoCms -Version 7.2.6
At the time of writing this post Umbraco 7.2.6 was the latest version.




3. Done- Umbraco is installed. All binaries and config files are automatically included in project.



4. Run web application and Umbraco site setup details are asked.

Nullable type issue with ?: Conditional Operator

Consider if you want to use if and only if condition (IIF) with a nullable type
DateTime? foo;
foo = true ? null : new DateTime(0);
This will throw a compiler error. To resolve this cast null to nullable type as below-
foo = true ? (DateTime?)null : new DateTime(0);