Buy Retin-A Without Prescription, This is the first video in a series that will take you step-by-step on building a Prism application that mimics Microsoft Outlook.  This video covers how to setup a multi-platform Prism application that targets WPF and Silverlight.  I show you how to setup your directory structure, as well as the solution/project structure inside Visual Studio.  We also create a functional Silverlight and WPF shell application and see our first glimpse of code sharing with the bootstrapper.

Watch the video on Xaml TV.

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Amoxicillin For Sale, Often when learning a technology you start by searching the web.  You look for videos, blogs, articles, samples, and examples.  What you start to realize is that everything you find is very simple “demo” code.  That’s code that shows how to implement a simple feature in a non-realistic demo.  Then you start looking for “production” code examples.  That’s code that represents a more realistic implementation of an application in a production environment.  This type of resource is very difficult to find.  Why?  Mainly, because it is very time consuming to create such examples.

This scenario is no different when trying to learn Prism.  You probably first start by reading though the documentation.  Next, you head on over to Pluralsight and watch my Introduction to Prism course.  Now that you know all the basics you start searching the web for examples for specific scenarios.  How do I do “x” and “y”?  How do I apply this sample code to my application?  Hopefully I can help you answer those questions.

I am starting a new video series called Building IG Outlook.  I will take you step-by-step on building a Prism application that mimics Microsoft Outlook.  We will be discussing the following key areas in no specific order:

1. Application architecture/structure
2. Multi-platform support (WPF and Silverlight)
3. Commanding
4. Event aggregation
5. Custom RegionAdapters
6. Custom RegionBehaviors
7. Navigation (OutlookBar, Ribbon, and View interaction)
8. MVVM (no frameworks needed)

Like most production applications we will have a dependency on a 3rd party toolset.  I will be using Infragistics NetAdvantage for WPF and Silverlight.  If you don’t own Infragistics you can download the trial or purchase the suite so you can compile and run all the sample code.  Otherwise, you will have to modify the code to work with your vendor of choice.

I hope this series will help you gain a better understanding of how you can use the various aspects of Prism to build your applications.  This will be a long series and I plan to record at least one a week depending on my traveling schedule.  If you have any questions or would like to see something specific be sure to let me know, and I will see if I can squeeze an example in the application.

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Don’t want to read the article?  Watch the video tutorial on Xaml TV.

Prism provides 4 region adapters out of the box for you:

• ContentControlRegionAdapter
• SelectorRegionAdaptor
• ItemsControlRegionAdapter
• TabControlRegionAdapter (Silverlight only)

Buy Flagyl Without Prescription, Well, what happens when you want to use a different control as a region host?  Simple.  You need to write a custom region adapter for it.  Is it hard you ask?  No it is quite easy.  Let’s write one for the StackPanel.

Start by creating a class the derive from and implements the base abstract class RegionAdapterBase<T>.

Notice that there are two methods we need to implement. Adapt and CreateRegion.  CreateRegion return the type of region we will need.  In our case we want to support multiple views so we need to return an instance of an AllActiveRegion.  If we only needed support for one view at a time we would return a SingleActiveRegion.  The Adapt method is responsible for adapting the region to our control.  This is where we will add and remove the views to or host control.

Now we simply have to tell Prism about our new RegionAdapter.  We do this in the bootstrapper.  Simply override the ConfigureRegionAdapterMappings method as follows:

That’s it.  Now you can use a StackPanel as a region host:

Download the sample application.

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Retin-A For Sale, I was monitoring my Twitter feed, like I always do, and saw a tweet come through asking about how to validate an object’s property against it’s parent ObservableCollection in the Infragistics XamDataGrid.  What this person was trying to accomplish was to validate a duplicate item in his data source.  They have a POCO object the implements the IDataErrorInfo interface, and an ObservableColletion<POCO> as the data source.  They want to check the ObservableCollection<POCO> for a pre-existing item whenever a property value in a POCO changes.  Obviously this is not a XamDataGrid issue, but rather an object design issue.  So I decided to whip up a quick and dirty solution to solve this particular issue.

The approach I am going to take is to simply keep track of the parent collection from within the POCO object itself.  I really like interfaces, so I started out by defining a simple interface my POCOs will implement.

Now let’s take a look at the simple POCO I will be using in this example.

Notice that we implement both the INotifyPropertyChanged interfaces as well as the IDataErrorInfo interface.  The Next thing we need is a custom ObservableCollection to use as our data source.

Notice that we are casting our item as the IHasParent interface and setting the Parent property accordingly.  The next thing we need to do is have our POCO class implement the IHasPerson interface.

Notice how we implemented the check for a duplicate last name.  We simply checked to make sure we are dealing with the LastName property.  Then we cast the Parent as an IList<Person> so that we can perform a simply LINQ query against it.  We check the parent collection for any results that match the LastName property.  If more than one is returned we have a duplicate.

So let’s test this baby using the XamDataGrid as the original poster was attempting to do.  First create our UI.

Next let’s hook up some data to this bad boy:

Now let’s run the app, type a duplicate last name, and see what we get.

Cool. Works as expected.  Now there are a number of ways to accomplish this task.  There are even frameworks out there that have already solved this problem for you such as CSLA.  I hope this simple approach helps you find a solution that works for you.

Download the Source.

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I am excited to announce that Pluralsight and Microsoft’s Patterns & Practices Cephalexin For Sale, team have joined forces to provide you with free access to over 4 hours of online Prism training.  That’s right, you heard me correctly. FREE online Prism training sponsored by the one and only Patterns & Practices team.  I know you have some question so let me answer the most common:

Q & A

Q1, after Cephalexin. Cephalexin price, When is this free training available?
A1. The entire weekend of Nov 12th 2011 through Nov 14th 2011.

Q2, ordering Cephalexin online. Cephalexin class, Do I have to be a Pluralsight subscriber to get this awesome training?
A2. This training will be freely available to everyone, Cephalexin For Sale. You do not have to be a subscriber.

Q3, Cephalexin alternatives. Cephalexin wiki, What does the course cover?
A3. Well let’s take a look:

• Getting started with Prism
• Bootstrapper and Shell
• Regions
• Modules
• Views
• Communication
• State-Based Navigation
• View-Based Navigation

More course information.

Q4, Cephalexin samples. Order Cephalexin from mexican pharmacy, Who is the author of this kick ass Prism course?
Q4. That would be me.

Cephalexin For Sale, Q5. Is it really free?
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New and Improved

If you are a subscriber and have already watched the course, Cephalexin trusted pharmacy reviews, Cephalexin description, I would like to bring to your attention that there have been two new modules added.  These modules will cover everything you need to know in order to start using the navigation services provided by Prism.  This includes state-based navigation and view-based navigation.

Mark your calendar for Nov 12th and be sure to cram as much Prism knowledge into your brain as you can before the weekend ends.  Don’t worry, if you run out of time you can always ask me questions directly.  You can contact me either through Twitter (@brianlagunas) or through the Extended WPF Toolkit project site.  I hope you enjoy the training.

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http://channel9.msdn.com/shows/geekSpeak/geekSpeak-Recording-Local-Messaging-and-Silverlight-with-Brian-Lagunas/

And yes, I did give Elegant Code some love on the show.

• Get the Bing Maps Silverlight Control
• Get a Bing Maps API Key
• Play with the Bing Maps interactive SDK Application
• Read the Bing Maps blog
• Check out the Bing Maps forum

You can also get the source code to my presentation here:  Download the source.

Note: You will need to download the Bing Maps Silverlight control and re-reference the DLLs before the source will compile.  Also, you have to have a Bing Maps API key in order to use any of the geocoding service examples.

<UserControl.Resources>

    <Style x:Key="myButtonStyle" TargetType="Button">

        <Setter Property="Background" Value="Blue" />

        <Setter Property="Foreground" Value="Green" />

        <Setter Property="FontSize" Value="24" />

    </Style>

</UserControl.Resources>

Then, you have to set the Style property on the Button control you want to apply the style to:

<Button Content="Button 1" Style="{StaticResource myButtonStyle}" />

Now, what if I want to apply that same style to every button in my application?  Well I would have to go and find every single button in my application and set the Style property accordingly.

<Button Content="Button 1" Style="{StaticResource myButtonStyle}" />

<Button Content="Button 2" Style="{StaticResource myButtonStyle}" />

<Button Content="Button 3" Style="{StaticResource myButtonStyle}" />

How many buttons are in your application?  What a pain in the you know what.  Well not anymore.  New in Silverlight 4 will be the ability to set your styles implicitly.  What does this mean?  It means that you can now declare your style, give it a TargetType, and exclude the x:Key; then it will apply that style to any instance of the TargetType control type.

<UserControl.Resources>

    <Style TargetType="Button">

        <Setter Property="Background" Value="Blue" />

        <Setter Property="Foreground" Value="Green" />

        <Setter Property="FontSize" Value="24" />

    </Style>

</UserControl.Resources>

<Grid x:Name="LayoutRoot">

    <StackPanel>

        <Button Content="Button 1" />

        <Button Content="Button 2" />

        <Button Content="Button 3" />

    </StackPanel>

</Grid>

Notice that I don’t need to set the Style property on my button controls individually anymore.

Well what if I have a style that I want to implicitly use, but I have this one special button that I want to give a different style?  Well in that case, just create a new Style and give it a x:Key, then set the Style property on your control.

<Style x:Key="myOtherButtonStyle" TargetType="Button">

   <Setter Property="Background" Value="Orange" />

   <Setter Property="Foreground" Value="Red" />

   <Setter Property="FontSize" Value="12" />

</Style>

<Button Content="Button 1" />

<Button Content="Button 2" Style="{StaticResource myOtherButtonStyle}" />

<Button Content="Button 3" />

Now, your special button will use your new style, and all others will remain themed.

Sneak Peek: Silverlight Application Themes

Tim Heuer has recently given us a preview of three new theme packs coming to Silverlight.

“GrayScale”

“Windows Theme”

“Metro”

Thanks Tim!

Well, this is much easier than you may think and I will show you how to accomplish this with just a few simple helper methods, and you can use any grid of your choice.  For this example, I will be using the DataGrid that comes with the Silverlight Toolkit. Make sure you download and install it, because I am not including the System.Windows.Controls.Data assembly required for the DataGrid.

It will be located at c:\Program Files\Microsoft SDKs\Silverlight\v3.0\Libraries\Client\System.Windows.Controls.Data.dll

In my scenario I am building a staffing application and I have a “StaffMember” object that has a collection of “Period” objects as a child property.  My objects look something like this:

public class StaffMember

{

    public string Name { get; set; }

    public string Department { get; set; }

    public ObservableCollection<Period> Periods { get; set; }

}

public class Period

{

    public string Title { get; set; }

    public int Hours { get; set; }

}

Pretty simple!  now, lets create our DataGrid that will show our data for editing.

<UserControl x:Class="SilverlightApplication1.MainPage"

             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 

             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

             xmlns:grid="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls.Data"

             xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 

             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 

             mc:Ignorable="d" d:DesignWidth="640" d:DesignHeight="480">

    <Grid x:Name="LayoutRoot">

        <grid:DataGrid x:Name="dataGrid"/>

    </Grid>

</UserControl>

Okay, now I don’t know how many Periods my StaffMember will have until I get the data back from the database at run time.  For demonstration purposes, I just created a method on my StaffMember class that would create my objects by iterating through a loop.

public static List<StaffMember> GetData()

{

    List<StaffMember> dataList = new List<StaffMember>();

    for (int i = 0; i < 3; i++)

    {

        StaffMember member = new StaffMember { Name = String.Format("Name#{0}", i), Department = String.Format("Department#{0}", i) };

        ObservableCollection<Period> periods = new ObservableCollection<Period>();

        for (int j = 0; j < 5; j++)

            periods.Add(new Period() { Title = String.Format("Period#{0}-{1}", i, j), Hours = j });

        member.Periods = periods;

        dataList.Add(member);

    }

    return dataList;

}

Now, we need to set the datasource on the DataGrid.  Since we are creating the columns at runtime make sure you set AutoGenerateColumns to false;

List<StaffMember> dataList = StaffMember.GetData();

dataGrid.AutoGenerateColumns = false;

dataGrid.ItemsSource = dataList;

dataGrid.Columns.Clear();

Next, lets take care of creating the easy columns first.  I created a method that its’ sole purpose is to give me new DataGridTextColumns.

private static DataGridTextColumn CreateTextColumn(string fieldName, string title)

{

    DataGridTextColumn column = new DataGridTextColumn();

    column.Header = title;

    column.Binding = new System.Windows.Data.Binding(fieldName);

    return column;

}

Using this method we can create our first two columns.

dataGrid.Columns.Add(CreateTextColumn("Name", "Staff Name"));

dataGrid.Columns.Add(CreateTextColumn("Department", "Company Department"));

Your DataGrid should now look something like this.

Now we need to create our columns based off the Periods collection.  To do this we will utilize a DataGridTemplateColumn.  The first thing we need to do is create a method that will dynamically create a DataTemplate that the DataGridTemplateColumn will use as the CellTemplate.

private string CreateColumnTemplate(int index, string propertyName)

{

    StringBuilder CellTemp = new StringBuilder();

    CellTemp.Append("<DataTemplate ");

    CellTemp.Append("xmlns='http://schemas.microsoft.com/winfx/");

    CellTemp.Append("2006/xaml/presentation' ");

    CellTemp.Append("xmlns:x='http://schemas.microsoft.com/winfx/2006/xaml'>");

    CellTemp.Append(String.Format("<TextBlock Text='{{Binding Periods[{0}].{1}}}'/>", index, propertyName));

    CellTemp.Append("</DataTemplate>");

    return CellTemp.ToString();

}

What I am doing here is using a StringBuilder to create a DataTemplate, represented by XAML.  Pay special attention to the TextBlock’s binding.  I am using String.Format to create my binding string base off the index the of the object in the collection and the name of the property on the child object I want to bind to.  Now, lets create our template that will be used for editing.

private string CreateColumnEditTemplate(int index, string propertyName)

{

    StringBuilder CellTemp = new StringBuilder();

    CellTemp.Append("<DataTemplate ");

    CellTemp.Append("xmlns='http://schemas.microsoft.com/winfx/");

    CellTemp.Append("2006/xaml/presentation' ");

    CellTemp.Append("xmlns:x='http://schemas.microsoft.com/winfx/2006/xaml'>");

    CellTemp.Append(String.Format("<TextBox Text='{{Binding Periods[{0}].{1}, Mode=TwoWay}}'/>", index, propertyName));

    CellTemp.Append("</DataTemplate>");

    return CellTemp.ToString();

}

This method is very similar to the previous one we wrote, but notice the subtle difference; I am using a TextBox instead of a TextBlock, and the Mode is set to TwoWay.  This will allow us to edit the values in the DataGrid.  Now we need a method that will actually create the TemplateColumns.

private DataGridTemplateColumn CreateTemplateColumn(int i, string propName)

{

    DataGridTemplateColumn column = new DataGridTemplateColumn();

    column.Header = String.Format("Period#{0}.{1}", i, propName);

    column.CellTemplate = (DataTemplate)XamlReader.Load(CreateColumnTemplate(i, propName)); //display template

    column.CellEditingTemplate = (DataTemplate)XamlReader.Load(CreateColumnEditTemplate(i, propName)); //edit template

    return column;

}

Notice that we are setting the CellTemplate and CellEditTemplate by using the XamlReader to load our StringBuilder result and cast it as a legitimate DataTemplate the column can use.  Now that we have the method that will create our TemplateColumns, lets go ahead and build our dynamic columns to the n-level.  We do this by looping though the number of columns that need to be created and using our CreateTemplateColumn method to add the new columns to the DataGrid.

int periodCount = dataList[0].Periods.Count;

for (int i = 0; i < periodCount; i++)

{

   dataGrid.Columns.Add(CreateTemplateColumn(i, "Hours"));

}

Now of course, in the real world you would not want to use the first index of the child collection to figure out how many columns to build.  I would recommend some kind of definition object that will define what columns and how many columns to build.

That is it.  You have now successfully satisfied your customer’s addiction to Excel.  Well, at least a little bit.

Download Source

Amoxicillin For Sale, Often when learning a technology you start by searching the web.  You look for videos, blogs, articles, samples, and examples.  What you start to realize is that everything you find is very simple “demo” code.  That’s code that shows how to implement a simple feature in a non-realistic demo.  Then you start looking for “production” code examples.  That’s code that represents a more realistic implementation of an application in a production environment.  This type of resource is very difficult to find.  Why?  Mainly, because it is very time consuming to create such examples.

This scenario is no different when trying to learn Prism.  You probably first start by reading though the documentation.  Next, you head on over to Pluralsight and watch my Introduction to Prism course.  Now that you know all the basics you start searching the web for examples for specific scenarios.  How do I do “x” and “y”?  How do I apply this sample code to my application?  Hopefully I can help you answer those questions.

I am starting a new video series called Building IG Outlook.  I will take you step-by-step on building a Prism application that mimics Microsoft Outlook.  We will be discussing the following key areas in no specific order:

1. Application architecture/structure
2. Multi-platform support (WPF and Silverlight)
3. Commanding
4. Event aggregation
5. Custom RegionAdapters
6. Custom RegionBehaviors
7. Navigation (OutlookBar, Ribbon, and View interaction)
8. MVVM (no frameworks needed)

Like most production applications we will have a dependency on a 3rd party toolset.  I will be using Infragistics NetAdvantage for WPF and Silverlight.  If you don’t own Infragistics you can download the trial or purchase the suite so you can compile and run all the sample code.  Otherwise, you will have to modify the code to work with your vendor of choice.

I hope this series will help you gain a better understanding of how you can use the various aspects of Prism to build your applications.  This will be a long series and I plan to record at least one a week depending on my traveling schedule.  If you have any questions or would like to see something specific be sure to let me know, and I will see if I can squeeze an example in the application.

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