Confirm form resubmission asp net 5 mvc

Introduction

ASP.NET is a popular programming language used for building web applications. It provides a for developing dynamic websites, web , and web applications. One issue that developers face is the “Confirm form resubmission” error in ASP.NET 5 MVC. In this article, we will explore this issue and provide solutions with examples.

The “Confirm form resubmission” Error

When working with ASP.NET 5 MVC, you may encounter the “Confirm form resubmission” error. This error occurs when a user tries to refresh a page that was submitted a form. The browser prompts the user to confirm the resubmission, which can be confusing and frustrating for users.

Solution 1: Redirect After Form Submission

One way to solve the “Confirm form resubmission” error is to redirect the user to a different page after the form submission. This prevents the user from accidentally resubmitting the form when refreshing the page.


// Controller  method
[HttpPost]
public IActionResult SubmitForm(FormModel model)
{
    // Process form submission logic here

    // Redirect to a different page
    return ("Success");
}

In the above example, the form submission is handled by the “SubmitForm” action method in the controller. After processing the form submission logic, the method redirects the user to the “Success” page the “RedirectToAction” method.

Solution 2: PRG Pattern (Post-Redirect-Get)

Another solution to the “Confirm form resubmission” error is to follow the PRG pattern. This pattern involves redirecting the user to a different page after the form submission, which prevents the resubmission when refreshing the page.


// Controller action method
[HttpPost]
public IActionResult SubmitForm(FormModel model)
{
    // Process form submission logic here

    // Redirect to a different page
    return RedirectToAction("Success");
}

// Success page action method
public IActionResult Success()
{
    // Display success message or perform other actions
    return View();
}

In this example, the “SubmitForm” action method handles the form submission and redirects the user to the “Success” page. The “Success” page action method can then display a success message or perform other actions.

Solution 3: Use PRG Pattern with

TempData is a feature in ASP.NET that allows you to store data temporarily between requests. You can use TempData to store a success message or any other relevant data and retrieve it on the page.


// Controller action method
[HttpPost]
public IActionResult SubmitForm(FormModel model)
{
    // Process form submission logic here

    // Store success message in TempData
    TempData["SuccessMessage"] = "Form submitted successfully";

    // Redirect to a different page
    return RedirectToAction("Success");
}

// Success page action method
public IActionResult Success()
{
    // Retrieve success message from TempData
    string successMessage = TempData["SuccessMessage"] as string;

    // Display success message or perform other actions
    ViewBag.SuccessMessage = successMessage;
    return View();
}

In this example, the “SubmitForm” action method stores the success message in TempData before redirecting the user to the “Success” page. The “Success” page action method retrieves the success message from TempData and displays it using the ViewBag.

Conclusion

The “Confirm form resubmission” error in ASP.NET 5 MVC can be resolved by implementing solutions such as redirecting after form submission, following the PRG pattern, or using TempData to store and retrieve data between requests. By applying these solutions, you can provide a user experience and prevent accidental form resubmission.

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