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I think this is now-a-days a common issue for all the developers who are currently exploring both Visual Studio 2010 RC and Silverlight 4 Beta. Microsoft has removed the bits of Silverlight in the RC version of Visual Studio 2010. To work with that lots of people are now asking the same question.

Today I found a link which is written in a different version. I thought to share this thru my blog which may help the fellow developers (who are keeping a eye to my blog posts) to explore both simultaneously. Here is the original link of the post: http://sorokoletov.com/2010/02/hate-2-wait-silverlight-4-beta-2-vs-2010-rc/

Use the below link to translate it in English: http://tinyurl.com/SL4inVS2010RC-en

If you follow the steps provided in that blog post, you can install the Silverlight 4 Beta in your Visual Studio 2010 RC environment & start working on it till Microsoft releases the RC version of Silverlight. Go ahead and enjoy.

Remember: WCF RIA Services doesn’t work with this hack. I strongly recommend you to work with Visual Studio 2010 Beta 2 & Silverlight 4 Beta.

Published by on under Silverlight |
Do you know that you can easily customize the Visual Studio 2010 start page? Yes, this is true. This uses a XAML page which you can modify easily if you have a knowledge in XAML. Redesign your page with your brand & look, impress your users (mainly your team) with the new look.
Why should I do this:
Now before reading the steps question may arise in your mind “Why should I do this? I don’t care what the look is.” Yup, this is right but thing in some point of view where you want to show some sort of information/news tracker on the best coding practises your team should follow or you may want to show the pending tasks of the team in the start-up page or you may want to redesign that page with custom templates to meet your company brand or something else.
How can I do this:
How I can do this? First of all, go to your “My Documents\Visual Studio 2010\StartPages”. There you will find a project named “StartPage” with an additional XAML file named “StartPage.xaml”. This xaml page is your Start Page of the Visual Studio 2010. Remember that this is user specific file & have to deploy for all users.
Before doing anything take a backup of the same. Now open the StartPage project file which will load the xaml in your Visual Studio IDE. Modify it according to the look & feel you want. Save it & you will immediately see the effect in your startup page.
Not only this. You can also chose different XAML files for your Startup XAML page. Create a separate XAML file with your design in the same directory as mentioned above. Open your Visual Studio 2010. Go to Tools –> Options –> Environment –> Startup.
Select the “Custom Start Page” from the drop down that you have created. Hit “OK” to see it immediately in your start page. Remember that for security reason you can’t change the path as this executes under the trusted privileges of the user only & also uses some references to the Visual Studio UI assemblies.
Published by on under Tips |
Microsoft just released Visual Studio 2010 Release Candidate (RC) & is now available for MSDN Subscribers. It will be available publicly by this Wednesday, 10th February 2010. If you are a MSDN Subscriber, you can download it from MSDN site: http://msdn.microsoft.com/en-in/default(en-us).aspx
Visual Studio 2010 RC has a “Go-Live” license, means you can develop softwares/applications using it & publish it. As you all know the features of Visual Studio 2010 in the Beta release, but I am again posting the link of Visual Studio RC features & walkthrough guide here so that it will be beneficial for the new users.
Go here & have a look into the Visual Studio 2010 RC features and walkthrough guide: http://msdn.microsoft.com/en-us/vstudio/dd441784.aspx
One update regarding the RC release is it doesn’t support Silverlight 4 but you can load/create Silverlight 3 projects using that. According to Scott in his Blog Post: “Silverlight 3 projects are supported with today’s VS 2010 RC build – however Silverlight 4 projects are not yet supported.  We will be adding VS 2010 RC support for SL4 with the next public Silverlight 4 drop. If you are doing active Silverlight 4 development today we recommend staying with the VS10 Beta 2 build for now.” Hence, those who are actively working on Silverlight 4 should work on Visual Studio 2010 Beta 2 instead of upgrading to the Release Candidate.
Complete this survey for Visual Studio 2010 and .NET Framework 4 Release Candidate: https://mscuillume.smdisp.net/Collector/Survey.ashx?Name=VS2010-RC
Last but not least, if you have any issue working with the RC version of Visual Studio 2010 or if you find any bug or if you have any future suggestions please never forget to report it at Microsoft Connect site: https://connect.microsoft.com/VisualStudio
Published by on under .Net |

In this post I will discuss on how to create a Silverlight arrow. This will be beneficial for implementing Silverlight presentation where you can add some arrows to point to some blocks. This is simple enough to implement & will be beneficial for the beginners.

Create a Silverlight project. Now add a public class “Arrow” in it. Inside the Arrow.cs you have to add three lines (one is the base line, second is the left arrow head & the third is the right arrow head). Next you have to add those three lines inside a Panel.

Let’s start with creating the simple arrow in step-by-step process. First step is to create the base line of the arrow. Create a Line and set it’s (x1, y1) & (x2, y2). This will create the line.

private static Line CreateBaseLine(double startX, double startY, double length, Brush lineBrush, double thickness)
            Line arrowLine = new Line();
            arrowLine.Stroke = lineBrush;
            arrowLine.StrokeThickness = thickness;
            arrowLine.X1 = startX;
            arrowLine.X2 = length;
            arrowLine.Y1 = startY;
            arrowLine.Y2 = startY;
            return arrowLine;
Now lets create the left arrow head. The approach to it is same as creating the base line. Here only you have to pass the instance of the base line for calculating the (x1, y1).
private static Line CreateLeftArrowHead(Brush lineBrush, double thickness, Line arrowLine)
            Line arrowLeft = new Line();
            arrowLeft.Stroke = lineBrush;
            arrowLeft.StrokeThickness = thickness;
            arrowLeft.X1 = arrowLine.X2 - 10.00;
            arrowLeft.X2 = arrowLine.X2;
            arrowLeft.Y1 = arrowLine.Y2 - 10.00;
            arrowLeft.Y2 = arrowLine.Y2;
            return arrowLeft;
Creation of right arrow head is also similar to the one I mentioned for creating the left arrow head. The difference here is the y1.
private static Line CreateRightArrowHead(Brush lineBrush, double thickness, Line arrowLine)
            Line arrowRight = new Line();
            arrowRight.Stroke = lineBrush;
            arrowRight.StrokeThickness = thickness;
            arrowRight.X1 = arrowLine.X2 - 10.00;
            arrowRight.X2 = arrowLine.X2;
            arrowRight.Y1 = arrowLine.Y2 + 10.00;
            arrowRight.Y2 = arrowLine.Y2;
            return arrowRight;

Here instead of creating two separate methods for creating the two arrow heads you can just create only one method & pass the calculated (x1, y1) & (x2, y2). This is the simple approach mentioned here to give an idea to the beginner to create an arrow. It can be modified to implement some complex arrows like Horizontal, Vertical or even better Connected Arrows.

Download Sample Application: Silverlight Arrow Demo

Published by on under .Net |

Microsoft Community Techdays is going on in India. It already started in 12 cities across India for Developers & IT Professionals. This will cover a big content on .Net 4.0, Visual Studio 2010, Silverlight, Cloud Computing, Windows 7 and SQL Server. Go ahead & learn the technical skills from the experts.

Visit the Community Techdays site and register yourself for your active participation. Chose any one of the event (Online or In-Person) which best suits you.

Published by on under News |

Mozilla released their final version of Firefox 3.6 with additional features. Some of it’s top features are:

  • Private Browsing like Internet Explorer 8
  • Nice Password Manager
  • Fastest Browsing Speed
  • Anti-Phishing & Anti-Malware support
  • New Session Restore
  • Easy Customization of add-ons
  • Improved Tab Browsing
  • New Personalized Themes
  • Improved Favourite Toolbar

To check all other features of Mozilla Firefox visit the Firefox Features site. If you are not using that yet you can download it from Firefox Download site.

Published by on under News |

Pinging a network IP or Hostname is not available in Silverlight. But you can do this using WCF service. In this post I am going to implement the same thing for you. I am using Silverlight 4 here. But this can also be possible in Silverlight 3.

Create a Silverlight application with Silverlight hosting website as “ASP.NET Web Site”:


Now this will create a XAML page for you by default. Add one TextBox & one Button into it. We will use TextBox to enter IP Address or the Hostname & on click of the Button it will ping that entered IP or Hostname. As a limitation to the Silverlight you can’t ping directly from the client application. You need to create a WCF service & using that you can easily ping. Remember there are some limitations here too as you are pinging it from the WCF hosting server.

Let’s implement our WCF service. Create a service method named PingNetwork and pass the hostNameOrAddress as a string. This will be your IP address or the host’s DNS name. Then create an instance of System.Net.NetworkInformation.Ping & pass the required parameter to it’s “Send” method. This will return you “PingReply”. Now check the Status of the reply. There are several options available. I used only IPStatus.Success to check it and depending upon that returning true or false.

    public bool PingNetwork(string hostNameOrAddress)
        bool pingStatus = false;

        using (Ping p = new Ping())
            string data = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa";
            byte[] buffer = Encoding.ASCII.GetBytes(data);
            int timeout = 120;

                PingReply reply = p.Send(hostNameOrAddress, timeout, buffer);
                pingStatus = (reply.Status == IPStatus.Success);
            catch (Exception)
                pingStatus = false;

        return pingStatus;

Now come to the client side implementation. Add the service reference to the Silverlight application and then call the service method with your IP Address or the DNS name of the host:


As it is an Asynchronous call, implement the “Completed” event for the method. In the completed event check the e.Result value. If the server is able to ping it will return true & in other case it will return false.

This is a simple implementation of the logic. As told earlier, this will ping from server & not from the client.

Published by on under .Net |

While surfing thru different forum I noticed that, lots of people are actually facing issues while trying to implement the drag and drop feature. The main problem arises while trying to drag from a ListBox to a panel like canvas. In this post, I will go thru the steps to demonstrate such feature.

Here I will use Telerik control to give out the demonstration. You can download the trial version of the dlls from Telerik Silverlight Control Page. I have implemented the demo using Silverlight 4 Beta 1. The same thing is also possible in earlier version of Silverlight. You can download Silverlight SDK from Silverlight Site. To develop apps in Silverlight 4 you must need Visual Studio 2010 Beta 2 which you can download from Microsoft site.

So, lets go for implementing the same. Create a Silverlight project. Lets create a ListBox and a Canvas inside the LayoutRoot:

<Grid x:Name="LayoutRoot" Background="White">
        <ColumnDefinition Width="150"/>
        <ColumnDefinition Width="*"/>
    <ListBox x:Name="lstBox" Margin="10" Grid.Column="0"/>
    <Canvas x:Name="cnvDropBox" Background="Yellow" Margin="10" Grid.Column="1"/>
Now in the code behind, we have to register the Drag and Drop events for the ListBox & Canvas. Use RadDragAndDropManager class to register the same. 
RadDragAndDropManager.AddDragInfoHandler(lstBox, OnDragInfo);
RadDragAndDropManager.AddDragQueryHandler(lstBox, OnDragQuery);
RadDragAndDropManager.AddDropInfoHandler(cnvDropBox, OnDropInfo);
RadDragAndDropManager.AddDropQueryHandler(cnvDropBox, OnDropQuery);

RadDragAndDropManager.SetAllowDrop(cnvDropBox, true);
The implementation of the events will be as below:
private void OnDragQuery(object sender, DragDropQueryEventArgs e)
    if (e.Options.Status == DragStatus.DragQuery)
        var draggedListBoxItem = e.Options.Source as Image;
        e.Options.DragCue = draggedListBoxItem.Source;
        e.Options.Payload = draggedListBoxItem.Source;

    e.QueryResult = true;
    e.Handled = true;
private void OnDragInfo(object sender, DragDropEventArgs e)
    if (e.Options.Status == DragStatus.DragComplete)
        // comment this block if you are going to clone
private void OnDropInfo(object sender, DragDropEventArgs e)
    var droppablePanel = e.Options.Destination;

    if (e.Options.Status == DragStatus.DropComplete && droppablePanel is Canvas)
        FrameworkElement dragableControl = null;
        Point desiredPosition = new Point();
        Point currentDragPoint = e.Options.CurrentDragPoint;
        Point canvasPosition = cnvDropBox.TransformToVisual(null).Transform(new Point());

        if (e.Options.Source is Image)
            // create the new instance & update the necessary properties
            // this step is require if you are going to make a clone
            Image tempDragableControl = e.Options.Source as Image;
            dragableControl = new Image() { Source = tempDragableControl.Source };

        desiredPosition.X = currentDragPoint.X - canvasPosition.X;
        desiredPosition.Y = currentDragPoint.Y - canvasPosition.Y;
        dragableControl.SetValue(Canvas.LeftProperty, desiredPosition.X);
        dragableControl.SetValue(Canvas.TopProperty, desiredPosition.Y);
private void OnDropQuery(object sender, DragDropQueryEventArgs e)
    var droppablePanel = e.Options.Destination;

    if (e.Options.Status == DragStatus.DropDestinationQuery && droppablePanel is Canvas)
        e.QueryResult = true;
        e.Handled = true;

As I am using Image inside the ListBoxItem, hence OnDragQuery I am setting the Source as an Image to the DragCue & PayLoad properties. OnDragInfo I am removing item from the ListBox. If you don’t want to remove the dragged image from the ListBox then just remove that line. OnDropInfo I am just placing the Image to the appropriate position which we will get as CurrentDragPoint in the DragDropEventArgs.

This is a sample demonstration. So, you have to explore it more to fulfil your requirement.

Download Sample Application:  Drag And Drop ListBoxItem to Canvas Demo

Published by on under .Net |

In this post I will describe you another feature of Silverlight 4 “Access to external content”. Here I will show how to drag and drop some external images to my sample application. Earlier Silverlight 4 this feature was not available. There was no client file access permission. But in this new release they introduced this functionality by which you can implement the same.

To implement this feature you must need Silverlight 4, which is now available in Beta 1 version. You need Visual Studio 2010 Beta 2 which you can download freely from Microsoft site.

Now if your dev environment is ready then we can go further to implement the same. Excited so much to do it? Create a Silverlight project which will create “MainPage.xaml” for you. Inside the MainPage.xaml add a ScrollViewer containing a WrapPanel. Your ScrollViewer will have a fixed Height & Width where as your WrapPanel will be free size. This ensures that, if more components are added inside the WrapPanel it will automatically add a scrollbar to it. So, you can scroll through the child components. In this example I want to drop some external image files inside this panel. So, I will set the WrapPanel “AllowDrop” property to true. This will make the panel droppable.

On the Drop event handler of the wrap panel you will get the dropped files as data to the DropEventArgs which has an array of FileInfo. DataFormats.FileDrop sets the droppable permission to the panel.

FileInfo[] droppedFiles = e.Data.GetData(DataFormats.FileDrop) as FileInfo[];
Now for each dropped file you can check whether it is a supported image file. If so, proceed further to add it to the wrap panel. See the sample code:
void imageContainer_Drop(object sender, DragEventArgs e)
    FileInfo[] droppedFiles = e.Data.GetData(DataFormats.FileDrop) as FileInfo[];

    foreach (FileInfo droppedFile in droppedFiles)
        if (IsSupportedImageFile(droppedFile.Extension))
            Border imagePlaceHolder = new Border()
                Child = CreateImage(droppedFile),
                Background = transparentColor,
                Margin = new Thickness(10.0),
                Cursor = Cursors.Hand,
            ToolTipService.SetToolTip(imagePlaceHolder, droppedFile.Name);

            imagePlaceHolder.MouseEnter += imagePlaceHolder_MouseEnter;
            imagePlaceHolder.MouseLeave += imagePlaceHolder_MouseLeave;

Here IsSupportedImageFile() method takes the extension of the dropped file as a parameter which will check whether it is a valid image format. I used .jpg & .png for the demonstration which actually uses switch case. The CreateImage() method creates an object of the image from the FileStream of the dropped file.
private Image CreateImage(FileInfo droppedFile)
    using (FileStream fileStream = droppedFile.OpenRead())
        BitmapImage bitmapImage = new BitmapImage();

        return new Image() { Source = bitmapImage, Width = 100, Margin = new Thickness(5.0) };

Now after writing this code, your application will be ready to get external file droppable inside it. Run your application & drop some jpg/png files from your image directory to your browser i.e. Silverlight application. You will see that the dropped images are automatically added inside your panel. This is a good example of accessing external files droppable inside your web application. Download the sample solution & implement what you want to do.

So what next? I think from the above example you will get the idea of what we can achieve from this. Anyway you can implement file upload utility by just dragging & dropping inside the web application just like Skydrive. You can also drop text files to read the file instead of browsing & uploading to the server. And more… Go ahead & enjoy programming with Silverlight 4.

Download Sample Application:   Silverlight 4 Drag-N-Drop External Image

Published by on under .Net |

Silverlight 4 has now support for Mouse Wheel. From now onwards you can use mouse wheel event to trigger on mouse wheel rotation. Until the release of Silverlight 4 Beta 1 you had to write JavaScript code & a huge lines of code in C#. Now just forget about those lines. Your code will be clean.

If you want to use the clean coding for mouse wheel, you have to just register & implement the said event in your code. Apart from the MouseLeftButtonDown / MouseLeftButtonUp / MouseRightButtonDown / MouseRightButtonUp / MouseEnter / MouseLeave events there you will find another event called MouseWheel. This event is responsible for clean up your code to implement the feature. You can also override the OnMouseWheel event in your main control.

See the below code:

protected override void OnMouseWheel(MouseWheelEventArgs e)

    txbMouseWheelValue.Text = string.Format("Mouse Wheel Value: {0}", e.Delta);

    if (e.Delta > 0)
        rotateBrdWheeler.Angle += 10;
        rotateBrdWheeler.Angle -= 10;

Here when the mouse wheel event is registered, it will set e.Delta as the output of mouse wheel rotation. You can check whether the value is positive / negative & depending on that you can decide your own logic. In the demo app I am rotating a Rectangle by 10 degree depending on the sign of delta. You can do your own logic there.

It’s so easy. So, go ahead & clean your code (only supports in Silverlight 4). Enjoy the new feature. Cheers…  :)

Download Sample Application:   Silverlight 4 Mouse Wheel Demo Solution

Published by on under .Net |

In my previous posts I discussed about “How to work with Notification API?” & “How to Capture Video from Default Webcam?”. In this post I will describe about the another cool new feature (“How to use the all new Right Click Context Menu?”) of Silverlight 4.

Silverlight 4 has now support for right click. You can now register the event “MouseRightButtonDown” & “MouseRightButtonUp” to any FrameworkElement. Hence, no need to use JavaScript to disable the right click option. If you want to disable the right click option then just implement those events with:

e.Handled = true;

Now if you want to implement a Context Menu on right click, create the Popup Context menu & position it to proper location. The following code will create the context menu:

private Popup CreateContextMenu(Point currentMousePosition)
    Popup popup = new Popup();
    Grid popupGrid = new Grid();
    Canvas popupCanvas = new Canvas();

    popup.Child = popupGrid;
    popupCanvas.MouseLeftButtonDown += (sender, e) => { HidePopup(); };
    popupCanvas.MouseRightButtonDown += (sender, e) => { e.Handled = true; HidePopup(); };
    popupCanvas.Background = new SolidColorBrush(Colors.Transparent);

    popupGrid.Width = Application.Current.Host.Content.ActualWidth;
    popupGrid.Height = Application.Current.Host.Content.ActualHeight;
    popupCanvas.Width = popupGrid.Width;
    popupCanvas.Height = popupGrid.Height;

    return popup;
CreateContextMenuItems() will add some context menu items, on click it will show which menu item has been cllicked by you. Upto this I only talked about the creation of the customized context menu. Now we have to show it on right click inside the Silverlight application. In my example, I added a Border control which has the right click event registered. Now check the below implemented code which will be responsible for showing the context menu:
void brdRightClickZone_MouseRightButtonUp(object sender, MouseButtonEventArgs e)
    txbMessage.Text = "Right Clicked";
    Point currentMousePosition = e.GetPosition(LayoutRoot);

private void btnRightClick_MouseRightButtonDown(object sender, MouseButtonEventArgs e)
    e.Handled = true;

On right mouse down, I am setting the e.Handled = true. This ensures that, this will not show up the default Silverlight context menu & the right mouse up implementation will popup the customized context menu at the current mouse position.

What next? Download the sample application created by me & implement your own logic to create the customized context menu which will open on right click on your silverlight application.

Download Sample Application:  Silverlight 4 Right Click Context Menu Demo

Published by on under .Net |
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