How to create a control in Behind-Code?

[NinaWilliam]

Hi,

I am trying to write a code that creates a CheckBox inside htmlTable when the user selectes an option from a DropDownList..

So, How can i do that?? Please help me..!!

ASP.NET/VB.NET

[Nikhil Aggarwal]

You need to do the following

1) Set the AutoPostBack property of the dropdownlist to TRUE.

2) Get a refference to the HTML table in your codebehind.
This can be done by doing 2 things

a) add the runat="server" attribute to the decalration of the HTML Table in the aspx page
b) Decalre a HTMLTable object for the class with the same id as the HTML Table

Protected Table1 As System.Web.UI.HtmlControls.HtmlTable

3) Place the code for adding a checkbox in the SelectedIndexChanged event.
Sample Code:

Private Sub DropDownList1_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles DropDownList1.SelectedIndexChanged
        Dim tr As New HtmlTableRow
        Dim td As New HtmlTableCell
        Dim chk As New CheckBox
        td.Controls.Add(chk)
        tr.Cells.Add(td)
        Table1.Rows.Add(tr)
    End Sub

[NinaWilliam]

Thanks alot
i will try it