Double postback + Mozilla

[mike55]

I am using the ajax control toolkit update panel for a site. I have noted that when users use my site with the Mozilla browser and click on one of the buttons in the update panel that a double postback occurs. I have been unable to trace the source of this problem and I have been unable to replicate it in IE 6.0. Has anyone come across this problem before?

 

I have found the source of my problems, it is caused by the following vb.net/javascript code that I am using:

'Prevent the user from double clicking on the save button.
   Private Sub PreventDoubleClick()
       Dim sb As System.Text.StringBuilder = New System.Text.StringBuilder()
       sb.Append("if (typeof(Page_ClientValidate) == 'function') { ")
       sb.Append("if (Page_ClientValidate() == false) { return false; }} ")
       sb.Append("this.value = 'Please wait...';")
       sb.Append("this.disabled = true;")
       sb.Append(Page.GetPostBackEventReference(btnSave))
       sb.Append(";")
       btnSave.Attributes.Add("onclick", sb.ToString())
   End Sub

 

I am using the above code to prevent the user from being able to double click a button. The button itself is sitting in a ajax update panel. Interesting problem.

 

Mike55.

Edited January 7, 2008 by mike55