Asp net mvc actionlink and post method

ASP.NET is a popular programming language used for developing web applications. One common requirement in web is to create a link that triggers a specific action on the server side. In ASP.NET, this can be achieved using the method in conjunction with the HTTP POST method.

To understand how to use the ActionLink method with the POST method in ASP.NET MVC, let's consider an example scenario. Suppose we have a web application that allows users to submit feedback. We want to create a link that, when clicked, will submit the feedback to the server using the POST method.

To begin, let's create a new ASP.NET MVC project. Open Visual Studio and select “Create a new project.” Choose the ASP.NET Web Application template and name your project. Select MVC as the project template and click “Create.”

Once the project is created, open the HomeController.cs file located in the folder. Inside the HomeController , add a new action method called SubmitFeedback, which will the submission of feedback.


 class HomeController : Controller
{
    [HttpPost]
    public ActionResult SubmitFeedback(string feedback)
    {
        // Process the feedback here
        return RedirectToAction("Index");
    }
}

In the above code, we have added an action method called SubmitFeedback that accepts a string parameter named feedback. This method is decorated with the [HttpPost] attribute, indicating that it be invoked when an HTTP POST request is made to the server.

Now, let's create a link in our view that will trigger the SubmitFeedback action method. Open the Index.cshtml file located in the Views/Home folder. Inside the file, add the following code:


@Html.ActionLink("Submit Feedback", "SubmitFeedback", null, new { @class = "btn btn-primary", @data_method = "post" })

In the above code, we are using the ActionLink method provided by ASP.NET MVC. The parameter is the link text, which in this case is “Submit Feedback.” The second parameter is the name of the action method to be invoked, which is “SubmitFeedback” in our case. The third parameter is the values, which we have set to null. Finally, we have added an HTML attribute called “data-method” and set its value to “post.” This attribute tells ASP.NET MVC to use the POST method when the link is clicked.

Now, when the “Submit Feedback” link is clicked, it will trigger the SubmitFeedback action method in the HomeController class using the POST method. The feedback submitted by the user will be passed as a parameter to the action method.

Conclusion

In this article, we have explored how to use the ActionLink method with the POST method in ASP.NET MVC. By combining these two, we can create links that trigger specific actions on the server side. This is particularly useful when we want to perform operations that modify data or have side effects.

Remember to always use the appropriate HTTP method for each action to ensure the and integrity of your web application.

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