Using Styles From Different Class Library In Silverlight

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For re-use purposes, it is helpful to put Silverlight styles into a separate class library; let’s call it ResourceLibrary in this example. In the class library which is using the styles from ResourceLibrary, one should declare a Styles.xaml, which only contains a reference to ResourceLibrary: <ResourceDictionary xmlns=”http://schemas.microsoft.com/winfx/2006/xaml/presentation” xmlns:x=”http://schemas.microsoft.com/winfx/2006/xaml”> <ResourceDictionary.MergedDictionaries> <ResourceDictionary …

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Why Silverlight Binding’s StringFormat Property Sometimes Isn’t Fully Working

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In Silverlight 4, the new Binding property StringFormat was introduced. It’s a nice thing, e.g. if you want to display numeric values with digit grouping and a fix number of decimal places. The syntax is equal to the String.Format: {Binding DataContextProperty StringFormat=’#,##0.00′}. One can, of course, use it for other …

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Large Message Size And Bad Request on WCF Service

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In an application I built, using Silverlight Client and WCF Service, the application threw an exception when the request data passed by the client to the server exceeded about 64K (might be a little bit less). Using a TCP tracer, I saw that the client received a “bad request” error. …

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machine.config Overrides TransactionScope / TransactionOptions.Timeout

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You are wondering why your DB-transaction, startet by using(TransactionScope scope = new TransactionScope(timeout)) runs into a timeout after 10 minutes? Because the <machineSettings maxTimeout=”00:10:00″/> in the system.transactions section of the machine.config has a default value of 10 minutes. And whatever is set as timeout of the TransactionScope by code – …

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Accessing Non-Public Member of Abstract Base Classes in Unit Tests

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Given you have an abstract base class with non-public member, and a derived class with other non-public member too. Now you want to unit-test some of the non-public member (methods) of the derived class. Prior the call of the method of the derived class, you need to set some non-public …

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Disable Control-Buttons of RadGridView

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Using Telerik’s RadGridView, one can connect the add, update, cancel and delete command to RadButtons by setting the Command=”telerik:RadGridViewCommands….” properties of the buttons and link to the grid by setting the CommandTarget=”{Binding ElementName=GridViewName}” property. For some reasons, I needed to disable the buttons, depending on the rights the currently logged …

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Silverlight Unit Test Headwords

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At the time of writing, creating unit tests for Silverlight is not as smooth and easy as it is for .NET assemblies. My experiences base on the Silverlight toolkit published on Codeplex silverlight.codeplex.com. You cannot access private or protected methods or properties. So use the #if DEBUG to make these …

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DatePicker TwoWay-Binding CultureInfo

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The sdk:DatePicker seems to have an issue when the value entered need to be bound back to the data container. When showing a value, the current culture info is used. When binding back, always en-US is used. Accordingly, entering the 31st of December fails to bind back, and the 3rd …

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