Follow up to posting on preventing double click...

[mike55]

Hi all

 

Here is the best solution that I have come across for preventing double clicks...

 

1. Create a module, and call it GlobalModule.

 

2. Add the following method/function...

   Public Sub ButtonClickEventGovenor(ByVal btn As System.Web.UI.WebControls.Button, ByVal PageHasValidators As Boolean)
       Dim sJavaScript As String

       If PageHasValidators Then
           sJavaScript = "if (typeof(Page_ClientValidate) == 'function') {if (Page_ClientValidate())" & _
           "{this.value='Please wait...';this.disabled = true;" & _
           btn.Page.GetPostBackEventReference(btn) & ";}}"
       Else
           sJavaScript = "this.value='Please wait...';this.disabled = true;" & _
           btn.Page.GetPostBackEventReference(btn)
       End If

       btn.Attributes.Add("onclick", sJavaScript)
   End Sub

 

3. Every page that you need to prevent a double click, do the following.

3a. declare a global variable: dim pBackHandler as new GlobalModule

3b. add the following line into the page load method:

Call pBackHandler.ButtonClickEventGovenor(btnAdd, PageHasValidators:=True)

 

If the page has no validators, just set the variable PageHasValidators to false.

 

The question that I have now, is how can I throw up a javascript messagebox or confirmation dialog and use it?

 

Mike55.