WPF: How to merge multiple columns in grid ?

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Facade Design Pattern

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The facade design pattern allows us, to provide a simplified interface from multiple class libraries. It provides a simple interface that hides the complexity of the class libraries being used. UML Class diagram For example, if the client code needs to access three different class libraries for a single functionality, instead of having the client code accessing those 3 class libraries, we can just create another class, that calls the required class libraries and have the client access only the class that you have created. The result is a simplified interface for the client and the client will not need to know the details of the actual (three) class libraries. Real World Examples for Facade Pattern A MortgageApplication object, which provides a simplified interface to a large subsystem of classes measuring the credit worthiness of an applicant. Implementation of above example in C#.Net Create Customer class, public class Customer { private string _name; ...
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Get Laptop battery status using C#

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In this article, I will show you how to show battery status of laptop battery like is discharging, charging, full etc. We will do this using WMI because WMI have power to answer questions about battery status .So let's start with WMI. To access account information of Battery we need to Use System.Management  name space.  To use this name space first of all we need to add reference to System.management by  Project Menu>>Add Reference . After tis at the top of the code use:  using System.Management; So that you can use of its classes . Now its simple to get information about laptop Battery through querying ManagementObjectSearcher Class . We can get all information about Laptop Battery through Win32_Battery class. So we need to query on that class to get related Management object and then we just need to get various properties related to it. Dictionary < int, string > StatusCodes; private void Form1_Load(object sender, EventAr...
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Routed Events in WPF

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Routed events are events which navigate up or down the visual tree acording to their RoutingStrategy. The routing strategy can be bubbling, tunneling or direct. You can hook up event handlers on the element that raises the event or also on other elements above or below it by using the attached event syntax: Button.Click="Button_Click" . Routed events normally appear as pair. The first is a tunneling event called PreviewMouseDown and the second is the bubbling called MouseDown . They don't stop routing if they reach an event handler. To stop routing then we have to set e.Handled = true; . Routed events are very similar to dependency properties (though instead of the Property suffix, by convention, we use an Event suffix… though it is not required).  Also need to register a RoutedEvent in the static constructor, followed by a standard .NET event wrapper.  Same as for dependency properties, DO NOT put any logic in the event wrapper itself. Routi...
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