How Can I Solve This Problem In Asp.Net Mvc

Question

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hi
in my index view i have a partial view for send new comments:

HTML

@model NewsViewModel


@Html.Action("create", "Comment", new { NewsId = Model.Id })

my code in comment control is :

C#

// GET: /Comment/Create
       [HttpGet]
       public ActionResult Create(int NewsId)
       {

           ModelState.Clear();
           return PartialView();
       }

       //
       // POST: /Comment/Create

       [HttpPost]
       public ActionResult Create(Comments comments)
       {

           if (ModelState.IsValid)
           {

               db.Comments.Add(comments);
               db.SaveChanges();
               ModelState.Clear();
               return PartialView();

           }
           return PartialView();

       }

my code in Create View:

HTML

@model Nezam.Models.Comments

@{
    ViewBag.Title = "Create";
}

<h2>Create</h2>

@using (Html.BeginForm()) {
    @Html.ValidationSummary(true)

    <fieldset class="fieldset">
        <legend class="legend">ارسال نظر</legend>

        <div class="select">
            @Html.LabelFor(model => model.Name)
        </div>
        <div class="input">
            @Html.EditorFor(model => model.Name)
            @Html.ValidationMessageFor(model => model.Name)
        </div>

        <div class="select">
            @Html.LabelFor(model => model.Email)
        </div>
        <div class="input">
            @Html.EditorFor(model => model.Email)
            @Html.ValidationMessageFor(model => model.Email)
        </div>

        <div class="select">
            @Html.LabelFor(model => model.Body)
        </div>
        <div class="textarea">
            @Html.EditorFor(model => model.Body)
            @Html.ValidationMessageFor(model => model.Body)
        </div>
        <input type="text" name="NewsId" value="@ViewBag.Id" style="display:none" />
        <p>
            <input type="submit" value="Create" />
        </p>
    </fieldset>
}


@section Scripts {
    @Scripts.Render("~/bundles/jqueryval")
}

Everything is working properly, But When i Refresh Browser (firefox), that ask me :

C#

to display this page , firefox must send information that will repeat action(such as a search or order confirmation) that performed earlier,

next i click "resend" and new record add again .

now what can i do for this problem ?

Posted 27-Mar-14 22:48pm

NorouziFar

Updated 28-Mar-14 0:20am

Sampath Lokuge

v2

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Sampath Lokuge · Answer 1 · 2014-03-28T00:18:00

To avoid such issues you have to maintain the PRG Pattern with ASP.net MVC.

PRG
What is the PRG Pattern ?
PRG stands for "Post/Redirect/Get"
Instead of returning an HTML page directly,
The POST operation returns a redirection command (using the HTTP 303 response code (sometimes 302) together with the HTTP "Location" response header),
Instructing the browser to load a different page using an HTTP GET request
The result page can then safely be bookmarked or reloaded without unexpected side effects

I have written an Article about this.Please read it for more info.

How to Use PRG Pattern with ASP.net MVC

IkramShah · Answer 2 · 2014-03-28T03:46:00

Solution 2

You can rather go for these links maybe these are helpful

http://stackoverflow.com/questions/12622019/preventing-firefox-reload-confirmation[^]

or this one

http://stackoverflow.com/questions/9871705/to-display-this-page-firefox-must-send-information-that-will-repeat-any-action[^]

Posted 28-Mar-14 3:46am

IkramShah

NorouziFar · Answer 3 · 2014-04-06T22:53:00

i changed my code and work very good tank you all

C#

[HttpPost]
        [ValidateInput(false)]
        public ActionResult Create(Comments comments)
        {
            comments.DateCreat = DateTime.Now.ToShortDateString();
            if (ModelState.IsValid)
            {
               
                db.Comments.Add(comments);
                db.SaveChanges();
                ModelState.Clear();
                
                ControllerContext.HttpContext.Response.Redirect(Request.UrlReferrer.ToString());            
            }
            
            return PartialView();
        }

How Can I Solve This Problem In Asp.Net Mvc

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