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Find Control iniside Listview

Posted on 2011-02-25
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Last Modified: 2012-05-11
I am trying to access a printbutton inside my listview control on a 3.5 asp form.

What I am trying to accomplish is to call a java script which validates the checkboxes on the lsitview.

Where should I been creating this sub procedure?

How do i access the print button?


Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        'Put user code to initialize the page here

Dim myButtonPrintOut1 As Button = CType(ListView1.FindControl("printButton1"), Button)
 myButtonPrintOut1.Attributes.Add("onclick", "return checkboxChecked()")

 End Sub

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Question by:TonyReba
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Assisted Solution

by:rawinnlnx9
rawinnlnx9 earned 100 total points
ID: 34984415
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Author Comment

by:TonyReba
ID: 34984459
well not really I am trying to fire an event on mybuttonprint click which will call a javascript , but my code doesnt seem to find it
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LVL 4

Expert Comment

by:Tuyau2poil
ID: 34986286
you must add  onitemdatabound="ListView1_ItemDataBound" to listview1 control in aspx section and put that code in your vb section :

Protected Sub ListView1_ItemDataBound(sender As Object, e As ListViewItemEventArgs)
      If e.Item.ItemType = ListViewItemType.DataItem Then
            Dim myButtonPrintOut1 As Button = CType(e.item.FindControl("printButton1"), Button)            
            myButtonPrintOut1.Attributes.Add("onclick", "return checkboxChecked()")
      end if
End Sub
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LVL 9

Author Comment

by:TonyReba
ID: 34997252
Hi thanks for your advise , unfortunately when I press print the javascript is not being called,,,?
Protected Sub ListView1_ItemDataBound(ByVal sender As Object, ByVal e As ListViewItemEventArgs)
        If e.Item.ItemType = ListViewItemType.DataItem Then
            Dim myButtonPrintOut1 As Button = CType(e.item.FindControl("printButton1"), Button)
            myButtonPrintOut1.Attributes.Add("onClientClick", "checkboxChecked()")
            myButtonPrintOut1.OnClientClick = "javascript:return confirm('You wish to do this?');"

        End If
    End Sub

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Accepted Solution

by:
Tuyau2poil earned 400 total points
ID: 34998518
can you verifie aspx listview control is similar to this in aspx code ?:

<asp:ListView ID="ListView1" runat="server"
            OnItemDataBound="ListView1_ItemDataBound" DataKeyNames="something"
            DataSourceID="SqldatasourceXXX" >
            <ItemTemplate>              
               <tr style="background-color: #FFFBD6;color: #333333;">
                    <td>
                        <asp:Label ID="myID1" runat="server" Text='<%# Eval("something") %>' />
                    </td>
                    <td>
                        <asp:Label ID="myID2" runat="server" Text='<%# Eval("something_else") %>' />
                    </td>
                     <td>
                        <asp:button ID="printbutton1" runat="server" Text='PRINT' />                    </td>
                </tr>
            </ItemTemplate>
           
ensure that "ListView1_ItemDataBound" is fired by debugging and putting break-points in codebehind.
Alan

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Author Closing Comment

by:TonyReba
ID: 35000371
got it, thanks
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