When a add a new control an event disappear with the control

[guilherme21922]

After i created the control he appear on the screen but when i click in a button
the control disappear!!!
And the syntax for created a neew function is correct?

thanks

Here is the .aspx file:

<asp:UpdatePanel ID="UpdatePanel5" runat="server" UpdateMode="Conditional">
                        <ContentTemplate>
                                <asp:Label  ID="lbTest" runat="server" Width="321px" style="left:450px; position: absolute; top: 1px; font-size: 19px;" BackColor="Transparent" Font-Bold="True" ForeColor="Black" Height="23px"></asp:Label>
                           <div id="divReversao" runat="server" style="position:absolute; top:25px; width: 1080px; height: 740px">
                                <asp:Button ID="btnSave" runat="server" Style="left: 400px; position: absolute; top: 205px" Width="150px" Height="25px" Text="Salvar Reversão" OnClick="btnSalvaReversao_Click" />
                           </div>
                        </ContentTemplate>
                        </asp:UpdatePanel>
 

here is the c# file:

top = 0;
for(i=0;i<2;i++)
{
              DropDownList drop = new DropDownList();
                                    drop.Style.Add("Left", "130px");
                                    drop.Style.Add("top", top + "px");
                                    drop.Style.Add("font-family", "Arial");
                                    drop.Style.Add("font-size", "11pt");
                                    drop.Style.Add("position", "absolute");
                                    drop.ID = "ddl" + i;
                                    drop.Height = 30;
                                    drop.Width = 150;
                                    drop.Items.Add(i);
                                    divReversao.Controls.Add(drop);
                                    top = top + 40;
}

[pronerd]

Ummmmm.... This is the JavaScript forum. You have posted ASP and C# code, and mentioned something about an ActiveX control. Do you have a JavaScript question? If not this is not the correct forum.

Also please use code tags when posting.

[acoder]

Moved to the .NET forum. Please post in the most relevant forum for your problem/question in future.

Moderator.

[Ashlewis]

Please specifiy which button causes this behaviour.
And which control dissapers?
also is there any other code behind?