Question

I need to add linked buttons in the code-behind based on a DataSet that is populated. How do I do that? Do I create a placeholder? I could be adding none, one, or many different linked buttons. I lalso need to have each linked button call a method in the code-behind. How would I wire that up when I add the button?

Thank you for any help.

Answer 1

Since you are dynamically created the link buttons you should create a panel or placeholder on your client side so you can append your links to the panel so you would know where they will appear like:

    <asp:PlaceHolder ID='Linkholder' Runat='server'></asp:PlaceHolder>  

and in your code behind

   Private Sub Page_Load(ByVal sender As System.Object, ByVal e As    System.EventArgs) Handles MyBase.Load       For i = 0 To 2 //this is for you iterate how many links you need to add base on your dataset you referred to        Dim ctrl As New LinkButton   //and since it is based on the Database you need to give them unique ids if you want to know which one was clicked based on the data info like so        ctrl.ID = ''+DB.id  //id is suppose to be a 'column'field from         your database        ctrl.Text = DB.id+'create'        ctrl.CommandArgument = 'myargument'        ctrl.CommandName = 'mycommandname'        AddHandler ctrl.Click, AddressOf link_button_click        Linkholder.Controls.Add(ctrl)      Next    End Sub     Sub link_button_click(ByVal sender As Object, ByVal e As System.EventArgs)    Dim lb As Linkbutton = CType(sender, LinkButton)     displayObjects(lb.CommandArgument)­ ­     End Sub 

But if not dynamically How about you add the link buttons on the client side but set visible to false so you can also have the attributes onclick in the controls to what method you want them to go to and in your code behind based on what happens in your postback that you want to make the links appear.just set the attribute to true when that happens like so:

 <asp:linkbutton id='link1' runat='server' onclick='link1method' visible='false'/> 

in code behind

 public Page_Load(object sender, EventArgs e) {      if(//is dataset whatever it is suppose to be for link to show)    {        link1.visible=true;    }  }  public link1method(object sender, EventArgs e) {     //for link1 method onclick  }