Microsoft.JQuery.Unobtrusive.Ajax is a NuGet package that provides AJAX helpers for ASP.NET MVC applications. While it is not officially supported in ASP.NET Core, you can still use it by following these steps:
Install the Microsoft.jQuery.Unobtrusive.Ajax package from NuGet.
Install the Microsoft.AspNetCore.Mvc.ViewFeatures package from NuGet. This package provides a IHtmlHelper extension method called PartialAsync that is used by AjaxHelper.
Add the following using statement to the top of your Razor view:
@using Microsoft.AspNetCore.Mvc.Rendering
jquery.unobtrusive-ajax.js file. This file can be found in the lib folder of the Microsoft.jQuery.Unobtrusive.Ajax package. You can use the script tag to add the reference, as shown below:<script src="~/lib/jquery/jquery.min.js"></script> <script src="~/lib/jquery-ajax-unobtrusive/jquery.unobtrusive-ajax.min.js"></script>
Note that you need to adjust the path to the jquery.unobtrusive-ajax.min.js file according to your project structure.
Once you have completed these steps, you can use the AJAX helpers provided by Microsoft.JQuery.Unobtrusive.Ajax in your Razor views. For example:
@using (Ajax.BeginForm("Action", "Controller", new AjaxOptions { UpdateTargetId = "result" }))
{
<input type="submit" value="Submit" />
}
<div id="result"></div>
In this example, we use the Ajax.BeginForm helper to create a form that is submitted via AJAX. When the form is submitted, the Action method on the Controller is called, and the result is displayed in the result element using the UpdateTargetId option.
In ASP.NET Core MVC, you can get the URL referrer using the HttpContext object in the controller.
Here's an example of how to get the URL referrer in an ASP.NET Core MVC controller:
public IActionResult MyAction()
{
string referrer = Request.Headers["Referer"].ToString();
// do something with the referrer
return View();
}
In this example, we're using the Request property of the controller to get the current HTTP request, and then accessing the Headers property to get the referrer header. We're converting the header value to a string using the ToString method.
Note that the Referer header may not always be available, so you should check that it's not null before using it.
Alternatively, you can also use the HttpContext.Request.Headers property to get the referrer header in a similar way:
public IActionResult MyAction()
{
string referrer = HttpContext.Request.Headers["Referer"].ToString();
// do something with the referrer
return View();
}
By using the HttpContext object in the controller, you can easily get the URL referrer in ASP.NET Core MVC and use it in your application as needed.
To include a reference to an assembly in an ASP.NET Core project, you can add a package reference to the assembly in your project's dependencies.
Here are the steps to include a reference to an assembly in an ASP.NET Core project:
csproj file by adding a <PackageReference> element with the package ID and version:<ItemGroup> <PackageReference Include="MyAssembly" Version="1.0.0" /> </ItemGroup>
Once you have included the reference to the assembly in your project's dependencies, you can use the types and methods defined in the assembly in your code.
Note that some assemblies may not be compatible with .NET Core or may require additional configuration to work correctly. Make sure to check the package documentation and test your application thoroughly after adding a reference to a new assembly.
When an ASP.NET Core MVC view cannot be found, it can be due to a few different reasons. Here are some common solutions to the issue:
Check the location of the view file: Make sure the view file is located in the correct folder and has the correct name. By default, views should be placed in the "Views" folder within the project, with subfolders for each controller. The view file should have the same name as the action method that returns it.
Check the view search locations: By default, ASP.NET Core MVC looks for views in a specific set of folders. Make sure that the view folder is added to the list of search locations. You can do this by adding the following code to the ConfigureServices method in Startup.cs:
services.AddMvc()
.AddRazorOptions(options =>
{
options.ViewLocationFormats.Clear();
options.ViewLocationFormats.Add("/Views/{1}/{0}" + RazorViewEngine.ViewExtension);
options.ViewLocationFormats.Add("/Views/Shared/{0}" + RazorViewEngine.ViewExtension);
options.ViewLocationFormats.Add("/Pages/{0}" + RazorViewEngine.ViewExtension);
options.ViewLocationFormats.Add("/Pages/Shared/{0}" + RazorViewEngine.ViewExtension);
});
Check the case sensitivity of the view name: Make sure that the case of the view name matches the case of the view file name. On case-sensitive file systems like Linux, the view name and file name must match exactly.
Check the routing configuration: Make sure that the routing configuration is set up correctly. The action method that returns the view should be mapped to the correct route.
Check the build action of the view file: Make sure that the build action of the view file is set to "Content". If it is set to "None", the view file will not be copied to the output directory and will not be found at runtime.
If none of these solutions work, there may be a problem with the ASP.NET Core MVC framework or the environment in which it is running. In this case, try running the application in a different environment or contacting Microsoft Support for assistance.
To use Microsoft.jQuery.Unobtrusive.Ajax with libman in an ASP.NET Core 2.1 project, you can follow these steps:
Add the following packages to your project:
Microsoft.jQuery.Unobtrusive.AjaxMicrosoft.jQuery.Unobtrusive.ValidationjqueryYou can add these packages to your project by using the Package Manager Console or by adding them to your csproj file.
Create a libman.json file in the root of your project if you don't already have one.
Add the following JSON code to the libman.json file:
{
"version": "1.0",
"defaultProvider": "cdnjs",
"libraries": [
{
"library": "[email protected]",
"destination": "wwwroot/lib/jquery"
},
{
"library": "[email protected]",
"destination": "wwwroot/lib/jquery-validation-unobtrusive"
}
]
}
This will download and install the required libraries to the wwwroot directory of your project.
In your Razor view, add the following script references:
<script src="~/lib/jquery/dist/jquery.min.js"></script> <script src="~/lib/jquery-validation-unobtrusive/jquery.validate.unobtrusive.min.js"></script>
This will load the jQuery and jQuery Unobtrusive Validation libraries.
To use the Ajax helpers provided by the jQuery Unobtrusive Ajax library, you need to include the following script reference:
<script src="~/lib/jquery-ajax-unobtrusive/jquery.unobtrusive-ajax.min.js"></script>
This script will add the required data-* attributes to your HTML elements, which will allow the jQuery Unobtrusive Ajax library to perform Ajax requests.
You can now use the Ajax helpers provided by the jQuery Unobtrusive Ajax library in your Razor views.
For example, you can create a form that submits its data via Ajax by using the Ajax.BeginForm helper:
@using (Ajax.BeginForm("Action", "Controller", new AjaxOptions { UpdateTargetId = "result" }))
{
<input type="text" name="input" />
<input type="submit" value="Submit" />
}
<div id="result"></div>
This will create a form that submits its data via Ajax and updates the div element with the result id with the response from the server.