Buttons on webforms

[Dozo_1st]

Does anybody have an idea why my webapplication requires 2 clicks before the application goes to the code behind the click???? It drives me crazy!

Whenever I click my button just once, it goes thru the page_load twice and displays my page initialized...

[Cander]

lets see you aspx and code behind code.

[Dozo_1st]

I have found the evildoer in my code:

I have a checkboxlist which is filled with items during runtime with the following code:

     Private Function Show_Producten()
        chklstDiensten.Items.Clear()
        drArray = LAWSysteem.DBInterface.dsSelectProducten.Select(Nothing, Nothing, DataViewRowState.CurrentRows)
        If drArray.Length > 0 Then
            For i = 0 To (drArray.Length - 1)
                chklstDiensten.Items.Add(drArray(i)("ProdNaam"))
                chklstDiensten.Items(i).Text = drArray(i)("ProdNaam").ToString
            Next
        End If
        Vul_Diensten()
    End Function

Now, whenever I do something (which is either manually or automated in runtime checking and unchecking) with this checkboxlist, any button I click after this checking and unchecking will cause a reload of the page in initialized state with the properties in the same state as the form in designtime; so no checkboxlist present at all (because items = -1) and all my textboxes are empty again. To go to the code of the clicked button I need to click the button again....

I don't know how it is possible by checking and unchecking my total webform can initialize

Most important: how do I solve this?

Anyone ideas?

thanks in advance for your help...
Dozo

[Dozo_1st]

Does anyone know the answer????

[Dozo_1st]

by myself...

The problem was that the checkboxlist was built and rendered at the client. Therefore any action that involved using the checkboxlist was done at the client and rendered at the client again, while everything as was set to runat="server".

To get rid of this problem I had to set Postback = True for the checkboxlist and it just worked fine after that!!!!

So there you go....

Dozo