What Are xmlns and xmlns:x in WPF? Understanding XML Namespace Declarations

In WPF (Windows Presentation Foundation), xmlns and xmlns:x are XML namespace declarations used in XAML files. They define the scope of XML namespaces, which are used to distinguish between elements and attributes that might have the same name but are used in different contexts. xmlns : The Default XML Namespace Definition : xmlns stands for XML namespace. It is used to declare the default namespace for the elements in the XAML file. Purpose : In WPF, it typically maps to the .NET namespaces that contain the classes and controls used in WPF applications. This default namespace allows you to use the WPF controls and elements without prefixing them. Example : <Window x:Class="WpfApp.MainWindow"    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"    ... > <Grid>        <Button Content="Click Me"/>     </Grid> </Window> Here, xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" sets...
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What is the difference between Finalize() and Dispose() methods?

Dispose() is called when we want to realese an unmanaged resources of an object.
finalize() also called for same but it doesn't assure object is garbage collected.
The dispose() method is defined inside the interface IDisposable whereas, the method finalize() is defined inside the class object.
The main difference between dispose() and finalize() is that the method 
dispose() has to be explicitly invoked by the user whereas, the method 
finalize() is invoked by the garbage collector, just before the object is destroyed.

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