HTML button onserverclick is not working in asp.net
<p>I had a problem in the event onserverclick. I have created an HTML server-side button "btnsubmit" in tab_1:</p>

<pre><code>&lt;%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Home.aspx.cs" Inherits="Skripsi.Home" %&gt;

&lt;!DOCTYPE html&gt;
&lt;html lang="en"&gt;
&lt;head&gt;
  &lt;title&gt;Home&lt;/title&gt;
  &lt;meta charset="utf-8"&gt;
  &lt;meta name="viewport" content="width=device-width, initial-scale=1"&gt;
  &lt;link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css"&gt;
  &lt;script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"&gt;&lt;/script&gt;
  &lt;script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"&gt;&lt;/script&gt;
&lt;/head&gt;
&lt;body&gt;

    &lt;div class="container-fluid bg-1 text-center"&gt;
        &lt;img src="/Image/fti-untar.png" alt="untar" /&gt;
        &lt;h2&gt;Layanan&lt;/h2&gt;
        &lt;br /&gt;
    &lt;/div&gt;

    &lt;div class="container"&gt;
        &lt;ul class="nav nav-pills nav-stacked col-md-2"&gt;
          &lt;li class="active"&gt;&lt;a href="#tab_1" data-toggle="pill"&gt;Home&lt;/a&gt;&lt;/li&gt;
          &lt;li&gt;&lt;a href="#tab_2" data-toggle="pill"&gt;Biodata&lt;/a&gt;&lt;/li&gt;
          &lt;li&gt;&lt;a href="#tab_3" data-toggle="pill"&gt;Konsultasi&lt;/a&gt;&lt;/li&gt;
          &lt;li&gt;&lt;a href="#tab_4" data-toggle="pill"&gt;Hasil Studi&lt;/a&gt;&lt;/li&gt;
        &lt;/ul&gt;
        &lt;div class="tab-content col-md-10"&gt;
            &lt;div class="tab-pane active" id="tab_1" runat="server"&gt;
                &lt;div id="panel1" class="panel panel-default"&gt;
                    &lt;div class="panel-heading"&gt;
                        &lt;h3 class="panel-title"&gt;Biodata&lt;/h3&gt;
                    &lt;/div&gt;
                    &lt;div class="panel-body"&gt;
                        &lt;label for="id"&gt;ID&lt;/label&gt;
                        &lt;input type="text" id="txtid" class="form-control" runat="server"/&gt;
                        &lt;br /&gt;
                        &lt;label for="nama"&gt;Nama&lt;/label&gt;
                        &lt;input type="text" id="txtnama" class="form-control" /&gt;
                        &lt;br /&gt;
                        &lt;label for="email"&gt;Email&lt;/label&gt;
                        &lt;input type="text" id="txtemail" class="form-control" /&gt;
                        &lt;br /&gt;
                        &lt;label for="alamat"&gt;Alamat&lt;/label&gt;
                        &lt;input type="text" id="txtalamat" class="form-control" /&gt;
                        &lt;input type="button" id="btnsubmit" runat="server" class="btn btn-default" onserverclick="btnsubmit_ServerClick"&gt;Submit&lt;/input&gt;
                    &lt;/div&gt;
                &lt;/div&gt;
            &lt;/div&gt;

            &lt;div class="tab-pane" id="tab_2"&gt;
                                &lt;div class="col-xs-3"&gt;
                    &lt;input type="text" id="txtname" name="Name" value="" class="form-control"/&gt;
                &lt;/div&gt;
                &lt;h4&gt;Pane B&lt;/h4&gt;
            &lt;p&gt;Pellentesque habitant morbi tristique senectus et netus et malesuada famesac turpis egestas.&lt;/p&gt;
            &lt;/div&gt;
            &lt;div class="tab-pane" id="tab_3"&gt;
                &lt;h4&gt;Pane C&lt;/h4&gt;
                &lt;p&gt;Pellentesque habitant morbi tristique senectus et netus et malesuada famesac turpis egestas.&lt;/p&gt;
            &lt;/div&gt;
            &lt;div class="tab-pane" id="tab_4"&gt;
                &lt;h4&gt;Pane D&lt;/h4&gt;
                &lt;p&gt;Pellentesque habitant morbi tristique senectus et netus et malesuada famesac turpis egestas.&lt;/p&gt;
            &lt;/div&gt;

        &lt;/div&gt;&lt;!-- tab content --&gt;
    &lt;/div&gt;&lt;!-- end of container --&gt;
&lt;/body&gt;
&lt;/html&gt;
</code></pre>

<p>And the code behind is:</p>

<pre><code>using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace Skripsi
{
    public partial class Home : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {

        }

        protected void btnsubmit_ServerClick(object sender, EventArgs e)
        {
            Response.Write("Success Horray");
        }

    }
}
</code></pre>

<p>When Pressing the button I get the following Error:</p>

<blockquote>
  <p>asp runtime error(the base class includes the field 'btnsubmit', but it's type is not compatible with the type of control)</p>
</blockquote>

<p>Update:
After cleaning the solution and rebuilding it I had the following error:</p>

<blockquote>
  <p>'content is not allowed between the opening and closing tags for element input'.</p>
</blockquote>