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How to Render a Partial View in ASP.NET MVC on Button Click?

Rendering Partial View on Button Click in ASP.NET MVC

Overview

This article addresses rendering a partial view on the client-side after a button click, resolving a common challenge in ASP.NET MVC applications. We will explore how to:

  • Capture the button click event
  • Send data to the controller
  • Render the partial view inside a designated div

Problem Description

In a simplified ASP.NET MVC application, we seek to dynamically display search results in a div upon a button click. The challenge lies in fetching data via database access and then rendering the partial view using this data, without reloading the entire page.

Solution

1. Event Handling:

Replace the button with:

<button></button>

2. JavaScript:

Add the following script:

var url = '@Url.Action("DisplaySearchResults", "Search")';
$('#search').click(function() {
  var keyword = $('#Keyword').val();
  $('#searchResults').load(url, { searchText: keyword });
})
  • This script captures the click event and sends the search text to the controller using jQuery's .load() method.

3. Controller Method:

Modify the controller method to accept the search text:

public ActionResult DisplaySearchResults(string searchText)
{
  var model = // Build model based on search text
  return PartialView("SearchResults", model);
}
  • This method fetches the data from the database and returns the partial view.

Additional Considerations

  • Validation: If the SearchCriterionModel contains multiple properties with validation attributes, use a submit button and handle the form's .submit() event instead.
  • Controller Method Signature: Update the controller method to receive the entire SearchCriterionModel object:
public ActionResult DisplaySearchResults(SearchCriterionModel criteria)

Tips for Rendering the Partial View Inside the Div

  • Ensure the div has a unique ID, such as "searchResults".
  • The partial view itself should have its own model class and data.
  • The .load() method will update the contents of the div with the generated HTML from the partial view.

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