I tested a asp.net button and WebGrid inside Ajax and FPBManager but could not see the issue.
The event only fired once. Also, about "a select" button you said, did you do something in this button?
And do you have global.asax in your project?

Regards,
Handy

there is a global.asax.

it just a button in a column labled   "Select"

i put a break at the event and it happens twice.

Handy,

There was a misunderstanding.  The button is in the WebGrid. Attached is a simple sample. 

Clicking button "Hello" adds "Hello" to textbox1. Clicking "Clear" clears textbox1.

Clicking the button in the "Select" column should change textbox1 to "Button clicked event. " it doesn't on my system. That is, if textbox1 = "hello", after clicking the button in the grid textbox1 still has "hello" instead of "Button clicked event." The grid button also displays an Alert with the contents of textbox1. On my system the Alert is displayed twice.

This sample does not use Ajax or flypostback.

btw, i tried to attach a file from a shared drive and it wouldn't work. i moved the file to my desktop and it worked.

George,

It works in here. Your sample is missing something because you run in VB. 

Here, try to see your code below.

Protected Sub WebGrid1_ButtonClick(ByVal sender As Object, ByVal e As ISNet.WebUI.WebGrid.ButtonEventArgs) Handles WebGrid1.ButtonClick
        TextBox1.Text = "Button clicked event. "
        WebGrid1.ClientAction.Alert(TextBox1.Text)
    End Sub

and in html code:

<ISWebGrid:WebGrid ID="WebGrid1" runat="server" DataSourceID="AccessDataSource1"
DefaultStyleMode="Elegant" Height="250px" UseDefaultStyle="True" Width="500px"
OnButtonClick="WebGrid1_ButtonClick" OnInitializeDataSource="WebGrid1_InitializeDataSource">

In .vb code, there is 'Handles WebGrid1.ButtonClick'  while in your html code also has 'OnButtonClick="WebGrid1_ButtonClick"' .
In vb, it would be automatically added (default behavior). That's why the event is called twice.
 
So, you will need to choose discard Handles WebGrid1.ButtonClick' or OnButtonClick="WebGrid1_ButtonClick"' .
This should fix your issue.

Regards,
Handy

Thanks Handy,

I followed your suggestion and still was getting strange results. in debug there would be a double click and in view browser one click.

So I rebuilt it (see attached). I also added a webButton and AJAX. I get the same reuslts with or without Ajax.

1. Click the button in the grid and the alert is displayed but the textbox doesn't change.
   
2. Click the webButton and the alert isn't displayed but the textbox changes.
   
3. Note that the bottom of the webgrid button is missing.
   

 still having problems attaching a file. i had to change the file name.. also, if i turn on numbering and type lines then the numbering doesn't work. if i type the lines, highlight them and select numbering then it works.

Hello George,

On your scenario, some issues happened because you were missing some settings. 

When you are using Ajax Update panel, our control needs some settings inside. 

I modified your sample and you can see the detail codes in there. 

For alert issue in WebButton, It happened because you are using FullPostBack mode.
In FullPostBack mode, of course the alert did not show.

Try to compare it with WebGrid button. It is not FullPostBack.
That's why you can see the alert ( AutoPostBack= true and PostBackMode=FlyPostBack ).

About your report forum issues, I have tried numbering but it worked fine. You can also see the attached recording.

Regards,
Handy

Thanks Handy.

There is still one open issue and that is the bottom of the button is not displayed.

I can't open your wmv file.

1. this is a test

   second line. i would expect this line to be numbered 2
   

   i'm using firefox. this should be numbered 3.
   

    
   

    

    

    

   
   

You only need to customize RowHeightDefault property. The size of height need to be customized based on your button size.

For the last issue about numbering, thank you for reporting to us. I can see the issue in here now. I will forward this to our developer team.

Regards,

Handy