<form asp-controller="Home" asp-action="SaveForm" 
      asp-antiforgery="true" id="TagDetailForm"
      data-ajax="true" data-ajax-begin="onBegin" 
      data-ajax-complete="onComplete" data-ajax-failure="onFailed" 
      data-ajax-success="onSuccess" data-ajax-method="POST">

Microsoft's release notes highlights for Preview 3 include:

• Visual Studio now offers .NET Framework 4.7.2 development tools to supported platforms with 4.7.2 runtime included.
• We improved performance during project unload/reload and branch switching.
• With added support for Azure Functions, you now have a new target host in the Configure Continuous Delivery to Azure dialog.
• Git and TFS status now updates properly for external file changes in .NET Core projects.
• We added new productivity features, such as code cleanup, invert-if refactoring, Go to Enclosing Block, Multi-Caret support, and new keyboard profiles.
• C++ enhancements include Template IntelliSense, convert macro to constexpr lightbulbs, and experimental in-editor code analysis squiggles.
• You can now use cross-language debugging with Python 3.7.0rc1.
• Performance Profiling now offers the ability to pause/resume data collection and adds a new .NET Object Allocation Tracking tool.
• We included improvements for Android incremental builds in the Xamarinsupport for Xcode 9.4.
•  

Layout 00:46:16 
C# Metro applications have access to numerous XAML layout features. 
This module describes those services, and shows how to use them to support Windows 8 features such as display orientation, and snap. 

Introduction
Layout System
Size Properties
Alignment
Margin
Demo: Margin and Alignment 
Padding 
Panels 
Demo: Canvas 
Demo: Grid and Snap 
Data-Oriented Panels 
ScrollViewer 
Metro Layout Conventions 
Layout Change Events 
Summary

<?xml version="1.0" encoding="utf-8"?>
<sprite xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="http://vswebessentials.com/schemas/v1/sprite.xsd">
  <settings>
    <!--Determines if the sprite image should be automatically optimized after creation/update.-->
    <optimize>true</optimize>
    <!--Determines the orientation of images to form this sprite. The value must be vertical or horizontal.-->
    <orientation>vertical</orientation>
    <!--File extension of sprite image.-->
    <outputType>png</outputType>
    <!--Determin whether to generate/re-generate this sprite on building the solution.-->
    <runOnBuild>false</runOnBuild>
    <!--Use full path to generate unique class or mixin name in CSS, LESS and SASS files. Consider disabling this if you want class names to be filename only.-->
    <fullPathForIdentifierName>true</fullPathForIdentifierName>
    <!--Use absolute path in the generated CSS-like files. By default, the URLs are relative to sprite image file (and the location of CSS, LESS and SCSS).-->
    <useAbsoluteUrl>false</useAbsoluteUrl>
    <!--Specifies a custom subfolder to save CSS files to. By default, compiled output will be placed in the same folder and nested under the original file.-->
    <outputDirectoryForCss />
    <!--Specifies a custom subfolder to save LESS files to. By default, compiled output will be placed in the same folder and nested under the original file.-->
    <outputDirectoryForLess />
    <!--Specifies a custom subfolder to save SCSS files to. By default, compiled output will be placed in the same folder and nested under the original file.-->
    <outputDirectoryForScss />
  </settings>
  <!--The order of the <file> elements determines the order of the images in the sprite.-->
  <files>
    <file>/Content/Images/01.png</file>
    <file>/Content/Images/02.png</file>
    <file>/Content/Images/03.png</file>
    <file>/Content/Images/04.png</file>
  </files>
</sprite>

/*
This is an example of how to use the image sprite in your own CSS files
*/
.Content-Images-01 {
/* You may have to set 'display: block' */
width: 32px;
height: 32px;
background: url('icons.png') 0 0;
}
.Content-Images-02 {
/* You may have to set 'display: block' */
width: 32px;
height: 32px;
background: url('icons.png') 0 -32px;
}
.Content-Images-03 {
/* You may have to set 'display: block' */
width: 32px;
height: 32px;
background: url('icons.png') 0 -64px;
}
.Content-Images-04 {
/* You may have to set 'display: block' */
width: 32px;
height: 32px;
background: url('icons.png') 0 -96px;
}

<div class="Content-Images-01"></div>
<div class="Content-Images-02"></div>
<div class="Content-Images-03"></div>
<div class="Content-Images-04"></div>

<img src="https://www.dntips.ir/images/logo.png" />

<img src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAQAAAADCAIAAAA7ljmRAAAAGElEQVQIW2P4DwcMDAxAfBvMAhEQMYgcACEHG8ELxtbPAAAAAElFTkSuQmCC" />

<img src="data:image/png;base64,iVBOR..." />