CODEWITHSUNDEEP
asp.netpostback
thegunner
thegunner

Reputation: 7153

response.redirect not working on page with page_load

I have a textbox onin a masterpage which I'm using as a search box. When the user presses enter I want to redirect to an other page with the search terms in the url paramaters.

Trouble it only seems to work on pages that don't have their own page_load subs.

            <div id="search-bar">
                <asp:TextBox ID="txtSearch" runat="server" Text=""></asp:TextBox>
                <asp:Button ID="btnSearch" runat="server" style="display:none"/>
            </div>

IN masterpage page_load:

    txtSearch.Attributes.Add("onKeyDown", "do_search(this)")

javascript function so that when user presses enter it calls btnSearch_Click

    function do_search() {
        if (event.keyCode == 13) {
            var invisibleButton = document.getElementById('<%=btnSearch.ClientID %>');
            __doPostBack(invisibleButton.name, '');
        }
    }


Protected Sub btnSearch_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnSearch.Click
    If Trim(txtSearch.Text) <> "" Then
        Response.Redirect("viewall.aspx?q=" & txtSearch.Text, True)
    End If
End Sub

It only works on pages that don't have a Page_load i.e. the response.redirect doesn't fire on pages with a page_load.

Any ideas?

Upvotes: 0

Views: 3213

Answers (3)

thegunner
thegunner

Reputation: 7153

Ok, thanks for the answers above but didn't seem to work. I finally got around this via this article...it seems a mysterious problem and is browser related.

http://www.pcreview.co.uk/forums/response-redirect-not-working-pressing-enter-key-t2888253.html

3rd post down:

"I then tried wrapping the controls in a Panel and set the Panel's DefaultButton and that seemed to get it working in IE."

My page now is as follows:

                <asp:Panel ID="Panel1" runat="server" DefaultButton="btnSearch">
                    <asp:TextBox ID="txtSearch" runat="server" Text=""></asp:TextBox>
                    <asp:Button ID="btnSearch" runat="server" Style="display: none" />
                </asp:Panel>

...and it works! finally.

Upvotes: 1

James Johnson
James Johnson

Reputation: 46047

You can try using the RaisePostBackEvent method, which is called whenever __doPostBack is used.

protected override void RaisePostBackEvent(IPostBackEventHandler source, string eventArgument)
{
    //call the RaisePostBack event 
    base.RaisePostBackEvent(source, eventArgument);

    if (source == btnSearch)
    {
        Response.Redirect("...");
    }
}

Upvotes: 0

Icarus
Icarus

Reputation: 63956

You can avoid the whole going to the server and redirecting. You can simply do this:

function do_search() {
        if (event.keyCode == 13) {
          var textbox = document.getElementById('<%=txtSearch.ClientID%>');
          if(textbox!=null)
             window.location('viewall.aspx?q='+textbox.value);
        }
    }

Upvotes: 1

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