一个简单的表单

<form method="post" action="/ContractManage/ContractSearch">
    <input type="text" id="username" name="username" />
    <input type="text" id="password" name="password" />
    <input value="jklsd" type="submit" />
</form>

            string name = Request.Form["username"];
            string pwd = Request.Form["password"];