At runtime, does the Form ID Asp.net webforms change?

Question

At runtime, the Form ID Asp.net webforms changes, see that I have on my machine the component ID.

Local example:

 <asp:HiddenField runat="server"  ID="MenuSelecionado" value="processo"/>

After execution it looks like this:

<input type="hidden" name="ctl00$ContentPlaceHolder1$MenuSelecionado" id="ctl00_ContentPlaceHolder1_MenuSelecionado" value="processo">

I wonder if you have any way to keep the ID or use other property in his stead.

Answer 1

Yes, you can use the ClientIDMode

<asp:HiddenField runat="server"  ID="MenuSelecionado" value="processo" ClientIDMode="Static"/>

You can see more about him in documentation

Alternative:

Keep it that way:

<asp:HiddenField runat="server" ID="MenuSelecionado" Value="processo" />

And on Page_load:

MenuSelecionado.ID = "MenuSelecionado";

The problem this way is that it will add the text "Maincontent" before, thus getting the element

<input name="ctl00$MainContent$Bla" id="MainContent_MenuSelecionado" value="processo" type="hidden">

_{I’ll run some tests if I can find another way}