c# - Checkbox not working in asp.net and HTML mixed page -

i'm grappling issue site asp.net/c# controls on .aspx pages html , i'm not sure how go on if change asp.net controls. change minor. tasked add check box, in <input type="checkbox" name="disablefeaturemanager" runat="server" id="disablefeaturemanager" />disable feature manager , in .cs page want check if box checked , make decisions based on that, control's checked property false. submit button html control: <input type="submit" value="start" name="submitbutton" />

in page_load ckecking if check returns false.

if (disablefeaturemanager != null && disablefeaturemanager.checked)     nexturl.append(featuremanagerchoices.createquerystringfromformdata(request.form)); 

you keep checkbox html server control doing following:

<input type="checkbox" name="disablefeaturemanager" runat="server" id="disablefeaturemanager" /> 

then change button web control follows:

<asp:button id="submitstart" runat="server" onclick="btn1_click" text="start" clientidmode="static" /> 

the difference above rendered html name output have id submitstart due clientidmode being static, if need friendly consistent id javascript manipulation.

to wire in event add code read value checkbox:

    protected void btn1_click(object sender, eventargs e)     {         var ischecked = disablefeaturemanager.checked;     }