Showing posts with label Asp.net MVC. Show all posts
Showing posts with label Asp.net MVC. Show all posts

What are differences in Partial and RenderPartial HTML Helper Method

In ASP.NET MVC, both @Html.Partial and @Html.RenderPartial are used to render partial views, but there are some differences between them:

Return type: @Html.Partial returns an MvcHtmlString, which can be assigned to a variable or used directly in Razor views. @Html.RenderPartial, on the other hand, writes the partial view's HTML directly to the output stream.

Method signature: @Html.Partial has two overloads: one that takes only the name of the partial view and one that takes a model object as well. @Html.RenderPartial has only one overload, which takes the name of the partial view.

Usage: @Html.Partial is used when you want to embed a partial view inside a view, and the result can be assigned to a variable for further processing. @Html.RenderPartial is used when you want to write the HTML of a partial view directly to the output stream, for example, in a loop.

Here's an example of how to use @Html.Partial and @Html.RenderPartial in a Razor view:

// Syntax example using @Html.Partial
@model List<string>

@foreach (string item in Model)
{
    <div>
        @Html.Partial("_PartialView", item)
    </div>
}

// Syntax example using @Html.RenderPartial
@model List<string>

@foreach (string item in Model)
{
    <div>
        @Html.RenderPartial("_PartialView", item)
    </div>
}


In the above example, @Html.Partial is used to render a partial view _PartialView with a string item as the model object. The result is then embedded inside a <div> tag.

In contrast, @Html.RenderPartial is used to write the HTML of the partial view _PartialView with a string item as the model object directly to the output stream, without any additional tags.

What are Differences in Asp.net MVC 3, MVC 4 and MVC 5

Here are few differences:
  • Razor view engine: ASP.NET MVC3 uses the ASPX view engine by default, while MVC4 and MVC5 introduced the Razor view engine, which is more concise and easier to read.
  • Bundling and Minification: MVC4 introduced the new feature of bundling and minification, which makes it easier to combine and compress JavaScript and CSS files into a single file.
  • Authentication filters: MVC5 introduced authentication filters that enable developers to apply authentication logic to controller actions or methods. This feature makes it easier to implement authentication logic in a modular and reusable way.
  • Attribute routing: MVC5 introduced attribute routing, which provides a more intuitive and flexible way to define the URL routing rules. With attribute routing, you can define the route directly in the controller or action method, rather than in a central location.
  • One ASP.NET: MVC5 introduced the concept of "One ASP.NET," which is a unified development model for web applications. It integrates ASP.NET MVC, Web API, and Web Pages into a single framework, making it easier to develop and maintain web applications.
  • Bootstrap: MVC5 introduced support for Bootstrap, which is a popular front-end framework for building responsive web applications. With Bootstrap, you can quickly and easily create a modern and professional-looking user interface for your application.
  • Filter overrides: MVC5 allows developers to override the filters defined in the global filter collection for a specific controller or action method. This feature makes it easier to customize the behavior of filters for specific parts of the application.
Overall, each version of ASP.NET MVC introduced new features and improvements that made it easier to develop web applications. As such, the latest version, MVC5, is generally the best choice for new projects, as it offers the most up-to-date feature