mvc form表单提交的形式有哪些？

 <form action="MyDemand" method="post">
    <span>关键字：</span>
    <input name="keywords" type="text" value="@keywords" />
   <input type="submit" value="搜索" />
  </form>

 <form id="dataform" action="UpdateUserInfo" enctype="multipart/form-data" method="post">
   <table style="width:100%;border:0;" cellpadding="0" cellspacing="0">
    <tbody>
     <tr>
      <td width="40">名字：</td>
      <td><input type="text" name="nvc_name" id="nvc_name" value="@Model.nvc_name" /></td>
     </tr>
     <tr>
      <td colspan="2" align="center">
       <input type="button" value="保存" id="btnsubmit" />
      </td>
     </tr>
    </tbody>
   </table>
  </form>

<script src="http://code.jquery.com/jquery-1.11.0.min.js"></script> 
<script src="http://malsup.github.io/jquery.form.js"></script> //ajaxForm 依赖脚本
<script type="text/javascript">
 $(document).ready(function () {
  $("#btnsubmit").click(function () {if ($("[name='nvc_name']").val() == "") {
    alert("请填写名字");
    $("[name='nvc_name']").focus();
    return;
   }
   $("#dataform").ajaxSubmit(function (r) {
    alert(r.Msg);
    if (r.success) {
     location.reload();
    }
   })
  })
 });
</script>

  <table style="width:100%;border:0px;" cellpadding="0" cellspacing="0">
   <tbody>
    <tr>
     <td width="15%" align="right">手机号：</td>
     <td><input type="text"placeholder="请输入手机号" id="nvc_user_name"/></td>
    </tr>
    <tr>
     <td colspan="2" align="center">
      <input type="button" value="保存" id="btnsubmit" />
     </td>
    </tr>
   </tbody>
  </table>

<script type="text/javascript">
$(function () {
  $("#btnsubmit").click(function () {
   var nvc_user_name = document.getElementById('nvc_user_name');
   $.post('/Interface/ModefiyPwd', {
    nvc_user_name: nvc_user_name.value,
   }, function (data) {
    if (data.success) {
     $("#successdiv").show();
     $("#editdiv").hide();
    }
    else {
     layer.msg(data.Msg);
    }
   });
  });
 })
</script>
 

   <form method="post" action="RecordEdit" id="dataForm">
    <table width="100%" border="0" cellspacing="0" cellpadding="0">
     <tr>
      <td align="right">应用路径：</td>
      <td>
       <input type="text" name="nvc_app_path" id="nvc_app_path" >
      </td>
     </tr>
     <tr class="b_tr2">
      <td><input type="button"onclick="CheckForm();" value="保存"></td>
     </tr>
    </table>
   </form>

<script src="http://libs.baidu.com/jquery/1.7.2/jquery.js"></script>
<script src="~/Scripts/layer/layer.js"></script>
<script type="text/javascript">
 function CheckForm()
 {
  if ($("#nvc_app_path").val().length == 0) {
   layer.tips("应用路径不能为空", "#nvc_app_path");
   return;
  }
  $("#dataForm").submit();
 }
</script>