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Posts Tagged ‘.NET’

Microsoft Makes MSTest v2 Open Source


In case you have missed the news. Microsoft has opened sourced the MSTest v2 framework. MSTest v2 is the latest version of MsTest Framework. It is cross-platform which means it can be executed on Windows, Linux, and Mac. It can be used to test desktop, mobile, web, or library .NET applications. And the best part, it is distributed though Nuget as a package.

The advantages of this approach are we

  • no long must wait for a new release or update for the .NET framework nor Visual Studio;
  • we don’t have to wait for Microsoft to fix an issue. It is open source; we can submit a pull request on GitHub with the fix;
  • Code and roadmap are transparent

 

For more info visit the following links

https://github.com/Microsoft/testfx-docs/blob/master/roadmap.md

https://github.com/Microsoft/testfx

About Lajak Technologies

A consulting firm in Ottawa, Ontario that provides services related to Microsoft technologies, Team Foundation Server, DevOps practices, security and more. Contact us today to help you solving your complex software problems.

Categories: .NET Tags: , , ,

Replace JavaScript serializer in Kendo controls with NewtonSoft


I have been doing code optimization for an ASP MVC 5 application that uses the Telerik Kendo controls. Some of the search results may return 7000 records in this project. After I had replaced the serializer, it took 30% less time to load the search results page.

 

The ASP MVC Helpers for Kendo controls by default use the System.Web.Script.Serialization.JavaScriptSerializer which is slow compared to the NewtonSoft Json serializer. Telerik made it easy to replace the default serializer.

Steps:

  • Created a class that implements IJavaScriptSerializer and implement the Serialize method.
    public class CustomKendoJsonSerializer : IJavaScriptSerializer
    {
       public string Serialize(object value)
       {
          return JsonConvert.SerializeObject(value); //use the serializer you want  here
       }
     }
    
  • Create a class that implements JavaScriptInitializer and implement the CreateSerializer method
    
    public class CustomKendoInitializer : JavaScriptInitializer
    
    {
    
    public override IJavaScriptSerializer CreateSerializer()
    
    {
    
    return new CustomKendoJsonSerializer ();
    
    }
    
    }
    
    
  • In the Application_Start event in the Global.asax file, register the new serializer
Kendo.Mvc.Infrastructure.DI.Current.Register<IJavaScriptInitializer>(() => new CustomKendoInitializer());
Categories: .NET, asp.net, C# Tags: , ,

ASP.NET Move Link Elements from the Body Element to Head


ASP.NET: Move Link Elements from the Body Element to Head

Today at a client site, we use a custom asp.net template and some 3rd party custom controls. to build the asp.net pages The custom template is a standard template by the company and we have to use it. Long story short, the template doesn’t initialize the Head property on the page. Hence when 3rd part custom controls finds that page.head ==null, it registers the webresources, as link elements, into the body of the page. Hence, the page fails xhtml strict validation check.

To fix that behaviour I wrote the following code:

Protected Overrides Sub Render(ByVal writer As System.Web.UI.HtmlTextWriter)
Dim sbPageHtml As New StringBuilder
        'Get the html to be rendered
MyBase.Render(New HtmlTextWriter(New StringWriter(sbPageHtml)))
Dim strPagHtml = sbPageHtml.ToString()
'find the occurences of
Dim matches() As String = (From m As Match In Regex.Matches(strPagHtml, "*") _
Select m.Value).ToArray()
        'matches exist
        If matches.Length > 0 Then
'remove occurances from html
Dim toRenderPageHtml As String = Regex.Replace(strPagHtml, "*", "")
           'Write found link tags into the head tag
toRenderPageHtml = toRenderPageHtml.Replace("", String.Format("{0}", String.Join("", matches)))
            writer.Write(toRenderPageHtml)

        Else 'no matches found, no modifications required
writer.Write(strPagHtml)
        End If
    End Sub

If you can think of other solutions, feel free to post them in the comment section.

Categories: .NET, asp.net, VB Tags: , ,

Unable to write to output file [FileName] .pdb: Unspecified error Visual Studio


Today I had a very weird problem with visual studio 2010 SP1. Whenever I build the solution I keep getting “Unable to write to output file [FileName] .pdb: Unspecified error” for one of the projects.
I tried cleaning the solution, deleting files in the obj and bin folders and rebuilt, made sure that the files are not readonly. That didn’t help.

Figured out that there was a missing file in one of the projects. To know which file it is:

Close visual studio

Reopen the solution (DON’T build)

Check the Errors List

You should see

Error    1    Unable to open module file [FileName].vb : The system cannot find the file specified.    [FileName] [Project]

Categories: .NET, 2010, Visual Studio Tags: ,

WCF Data Service Exception: The LoadAsync method cannot be called when the DataServiceCollection is not a child collection of a related entity


In code you most likely called the no argument LoadAsync() method. Make sure you call pass the correcgt URI to the LoadAsync method. For example: if you service is located at http://localhost:1033/Services/PersonInfoService.svc/People

Make sure you pass the service URI without /People to the service context and pass /People to to the LoadAsync method

var people = new PersonEntities(new Uri("http://localhost:1033/Services/PersonInfoService.svc/"));
var Items = new DataServiceCollection<Person>(people);
//Pass the collection path to the LoadAsync method
Items.LoadAsync(new Uri("/People", UriKind.Relative));
Categories: .NET, C#, OData, Services, WCF Tags: , , ,