Go Premium for a chance to win a PS4. Enter to Win

x
?
Solved

spinning wheel with update panel

Posted on 2011-02-15
6
Medium Priority
?
1,610 Views
Last Modified: 2012-05-11
Hi,

I have a search that I am doing that can take a few seconds to come back.

However it isn't blatently obvious that anything is happening so I want to use the spinning ajax wheel.

I have my code inside an <asp:updatepanel and want to display the wheel while the search is happening.

I have the code below but the wheels doesn't show which is fair enough.

How is this normally done?
Protected Sub btnSearch_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnSearch.Click
        Dim suppliers As List(Of Supplier) = Nothing

        Try
            If txtSearchTerm.Text <> "" Then
                pnlWaiting.Visible = True 'this is where the wheel should become visible

                suppliers = New List(Of Supplier)

                suppliers = HelperGeneral.GetSuppliers(txtSearchTerm.Text)

                If suppliers.Count > 0 Then
                    rptSuppliers.DataSource = suppliers
                    rptSuppliers.DataBind()

                    lblResultCount.Text = "Found " & suppliers.Count & " Suppliers matching the search criteria."

                    pnlSupplierDisplay.Visible = True
                Else
                    lblResultCount.Text = "No Suppliers matching the search criteria."
                End If

                pnlWaiting.Visible = False 'and then where it is hidden again.
            End If
        Catch ex As Exception
            Throw
        End Try
    End Sub

Open in new window

0
Comment
Question by:scm0sml
  • 4
  • 2
6 Comments
 
LVL 10

Expert Comment

by:John Claes
ID: 34895726
the issue is here that a redrawn only occures After the Javascript has finished working and then you already hidden the wheel again.

Thing is here that you should ensure the wheel is visible and giving a function to call when shown
Then when the wheel is shown it must call the given function.

I'll look in my archive for a code-example
0
 

Author Comment

by:scm0sml
ID: 34895745
OK I'd appreciate an example!! Thanks in advance.
0
 
LVL 10

Expert Comment

by:John Claes
ID: 34895766
Ok :

This might help faster :
I've taken my needed code from

http://www.codeproject.com/script/Articles/ArticleVersion.aspx?aid=35061&av=6251
0
Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 
LVL 10

Expert Comment

by:John Claes
ID: 34895781
And this was the other Source of my Code :

http://www.codeproject.com/KB/aspnet/PleaseWaitButton_ASPNET.aspx
0
 
LVL 10

Accepted Solution

by:
John Claes earned 2000 total points
ID: 34895832
WHat happens  :


The button's onclick is altered so 2 things hapepn instead of only the Call to the Server
The call is performed and then the javascript will show the Waiting image and disable all controls....


When the Callback (server-side) is done the page will refresh itself to show the server-side answer and the waiting image will be hiden again.

you can write this very easly yourself, but then you have to add it everywhere yourself.

regards

poor beggar


0
 

Author Comment

by:scm0sml
ID: 34896055
I wrote it myself in the end as it is only needed in the one place but thank you for the idea!!
0

Featured Post

Keep up with what's happening at Experts Exchange!

Sign up to receive Decoded, a new monthly digest with product updates, feature release info, continuing education opportunities, and more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

ASP.Net to Oracle Connectivity Recently I had to develop an ASP.NET application connecting to an Oracle database.As I am doing it first time ,I had to solve several problems. This article will help to such developers  to develop an ASP.NET client…
A quick way to get a menu to work on our website, is using the Menu control and assign it to a web.sitemap using SiteMapDataSource. Example of web.sitemap file: (CODE) Sample code to add to the page menu: (CODE) Running the application, we wi…
This video shows how to quickly and easily deploy an email signature for all users in Office 365 and prevent it from being added to replies and forwards. (the resulting signature is applied on the server level in Exchange Online) The email signat…
Please read the paragraph below before following the instructions in the video — there are important caveats in the paragraph that I did not mention in the video. If your PaperPort 12 or PaperPort 14 is failing to start, or crashing, or hanging, …
Suggested Courses

926 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question