Windows Phone 8 MapView Control :How To Get Map Bounds(Top-Left and Bottom-Right) GeoCoordinate's(C#-XAML)

Introduction

In Prev post i was described about MapView Custom Pushpin.And in sometimes we may need to get map bounds area (North,West,South,East) with latitude and longitude's ,off course its quit interesting requirement for finding current loaded mapview bounds.Because for every view action ,map bounds will be changed. So that we need to detect bounds when viewchanged.
However in this post i am going to explain about "Maps bounding rectangle in windows phone 8" or "How to get Top-Left and Bottom-Right latitude and longitude of Current Map view"

Windows Phone 8 Maps API :Making Custom PushPin With Custom ToolTip Without WP8 toolkit PushPin Control(C# - XAML)

Introduction

The most interesting news for developers is that also the Maps control has been updated and it introduced many improvements: first of all, performance improvements. Bing Maps control wasn’t good in this and, especially if you tried to add layers or pushpin, you could have experienced really poor performances.
Second, the new control now offers lot of new options: you can enable 3D landmarks, you can switch between day and night colors, you can change the heading and the pitch, you can easily calculate routes and so on.
However in this post i am going to explain about "How to add custom pushpin to MapView" and "How to show a custom tooltip for tapped pushpin"