asked on

No postback on button click

Does anyone know how to stop a postback when a button is clicked.

I just want the button to show another panel and not postback to the entire page.

<asp:LinkButton ID="lnkSaveAs" skinid="empty" Text="Save As" runat="server" autopostback="false" visible="false" >
</asp:LinkButton>

This is the code behind:

Protected Sub lnkSaveAs_Click(sender As Object, e As System.EventArgs) Handles lnkSaveAs.Click
Me.panelsaveas.Visible = True
End Sub

I am getting a postback to the entire page.

Thanks in advance for your help.

Deepak Lakkad

Hi,

Here are few links which will help you to get your result

http://stackoverflow.com/questions/176827/disable-the-postback-on-an-asplinkbutton
http://stackoverflow.com/questions/4067925/asp-net-link-button-preventing-postback
http://forums.asp.net/t/1275403.aspx/1

- Deepak Lakkad

Deja Anbu

if u r handling visiblity inside code-behind, then it will postback. to avoid this, u may have to use ajax.

i would recommend using javascript to handle visibility of the panel.(if your aim is only to show/hide the panel)

<asp:LinkButton ID="lnkSaveAs" skinid="empty" Text="Save As" runat="server" autopostback="false" visible="false" OnClientClick="showPanel();" >
</asp:LinkButton>

<script type="text/javascript">
    var pnlId = '#<%= panelsaveas.ClientID %>';

    function ShowPanel(elm) {
//if you have jquery reference , use the following
        if ($(pnlId).is("visible"))
            $(pnlId).hide();
        else
            $(pnlId).show();
   
//if you r not using jquery, use the following js
if(pnlId.style.display == 'none')
 pnlId.style.display = 'block';
else
pnlId.style.display = 'none';
}
</script>

Open in new window

Monica P

If you no need any postback to happen then you can have script to done this

     <script>
function ShowPanel() {

    document.getElementById('<%=Panel1.ClientID %>').style.display = 'block'
    return false;
}
     </script>

Open in new window

<asp:LinkButton ID="LinkButton1" runat="server" [b]OnClientClick ="return ShowPanel();"[/b]>LinkButton</asp:LinkButton>
        <asp:Panel ID="Panel1" runat="server" style="display:none">
        
        <p> Hi Test </p>
        
    </asp:Panel>

Open in new window

ASKER CERTIFIED SOLUTION

Roopesh Reddy

membership

This solution is only available to members.

To access this solution, you must be a member of Experts Exchange.

Start Free Trial

Monica P

That's with unexpected click on bold icon in the editor..Except that u can use as such

 <script>
function ShowPanel() {

    document.getElementById('<%=Panel1.ClientID %>').style.display = 'block'
    return false;
}
     </script>

Open in new window

<asp:LinkButton ID="LinkButton1" runat="server" OnClientClick ="return ShowPanel();">LinkButton</asp:LinkButton>
        <asp:Panel ID="Panel1" runat="server" style="display:none">
        
        <p> Hi Test </p>
        
    </asp:Panel>

Open in new window

sherbug1015

ASKER

Thank you