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check\uncheck all checkboxes in datalist control

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Join Date: May 2008

Posts: 17

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check\uncheck all checkboxes in datalist control

Jul 18th, 2008

check\uncheck all checkboxes in datalist control in asp.net with vb.

 Help with Code Tags 
 ASP.NET Syntax (Toggle Plain Text) 
 Protected Sub DataList8_ItemDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.DataListItemEventArgs) Handles DataList8.ItemDataBound
 
        If e.Item.ItemType = ListItemType.Item OrElse e.Item.ItemType = ListItemType.AlternatingItem Then
 
            Dim chkSelect As New CheckBox
            chkSelect = DirectCast(e.Item.FindControl("chkSelect"), CheckBox)
 
            chkSelect.Attributes.Add("onclick", "javascript:return Validate(this.name)")
        End If
end sub
 Protected Sub DataList8_ItemDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.DataListItemEventArgs) Handles DataList8.ItemDataBound

        If e.Item.ItemType = ListItemType.Item OrElse e.Item.ItemType = ListItemType.AlternatingItem Then

            Dim chkSelect As New CheckBox
            chkSelect = DirectCast(e.Item.FindControl("chkSelect"), CheckBox)

            chkSelect.Attributes.Add("onclick", "javascript<b></b>:return Validate(this.name)")
        End If
end sub

getting error in chkSelect.Attributes.Add("onclick", "javascript:return Validate(this.name)")

Object reference not set to an instance of an object.

give me the suggesion where i have to update my code

Last edited by Tekmaven; Jul 18th, 2008 at 6:16 pm. Reason: Code tags