Back Button Event?

[modernthinker]

Hi,

Is it possible to add an event to a button on a web form so when it is clicked it goes back to the previous page. So it simply replicates the back button you find on a explorer browser. I want this so i can have all the values in a form still entered, i know i could do this using sessions etc but it would be much simplier to have that back button?

Thanks

[dj4uk]

You redirect to the referrer page which does the same thing.

void button_click(object sender, EventArgs e) {
    Response.Redirect(Request.UrlReferrer.ToString());
}

HTH

DJ

[modernthinker]

Using a Response.Redirect method will cause my form fields to be empty once the button is clicked. But with a Browser back button, you still have your data on the original page?

[dj4uk]

In which case you'd have to use client-side JavaScript to actually use the browser's history.

I believe the JavaScript needed is: history.go(-1).

DJ

[Wokawidget]

This would look like:

Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        'Put user code to initialize the page here
        Button1.Attributes.Add("onClick", "history.back();")
    End Sub

Alnernatively you can do this at design time:

<asp:Button id="Button1" OnClick="history.back();" runat="server" Text="Button"></asp:Button>

Woof

[modernthinker]

Thanks for that, the javascript works but one problem, i have autoPostback dropdownlists on the form page, so when i get back to the form page they aren't working properly. I will probably just do it using sessions variables to re-populate the data page.

Thanks!