在浏览器上按回时页面不加载

Question

I have a small project in asp.net core 3.

In one of the razor page I have this:

<form method="post" enctype="multipart/form-data">
    <table class="basic">
        @for (int i = 0; i < Model.activeSlides.Count; i++)
        {
            <tr>
                <td>
                    <a href="~/source/Slides/@Model.activeSlides[i].Filename">@Model.activeSlides[i].Filename</a>
                </td>
                <td>
                    <input type="submit" value="Move Up" asp-page-handler="MoveUp" asp-route-num="@i" />
                    <input type="submit" value="Move Down" asp-page-handler="MoveDown" asp-route-num="@i" />
                    <input type="submit" value="Archive" asp-page-handler="Archive" asp-route-num="@i" />
                </td>
            </tr>
        }
    </table>
   ...
</form>

So each of the buttons has their own OnPost function. Each of them modify an XML file and loads the same webpage.

public void OnPostMoveUp(string num)
{
    ...
}

public void OnPostMoveDown(string num)
{
    ...
}

public void OnPostArchive(string num)
{
    ...
}

I have noticed that when the buttons are used, they show the page handler and route in the URL. Eg https://localhost:44342/screens/edit?num=2&handler=MoveUp

The problem I am facing is after a button has been pressed, the user may select a hyperlink in the first column. This is just an image, but the when the back button on the browser is pressed the page does not load.

PS I am not using MVC.

Answer 1

I have fixed this by adding Response.Redirect("/screens/edit"); at the end of all the OnPost methods.

This means the url params don't show therefore then clicking a link and choosing back on the browser now works.

This also fixes refreshing the page so it doesn't submit the form again.