c# - HTML5 email input cannot assign ID and RUNAT="Server" ASP.NET 4

Question

Hi I am trying to assign an ID to an HTML5 input so that i can access its value from the code behind in the web form. However with the this code:

 <input type="email" required autofocus placeholder="Email Address" class="txt-input txt-input-username" ID="myTextBox" runat="server" />

Visual Studio 2010 is telling me that it cannot resolve the symbol ID="myTextBox".

Any ideas on how i can fix this because i have been searching for an answer for nearly a day? thanks

Answer 1

Use this code to use HTML5 input type:

1. Use this in .aspx file:

   <input type="text" required autofocus placeholder="Email Address"
       class="txt-input txt-input-username" ID="myTextBox" runat="server"/>
   

2. Use this in .cs file:

    myTextBox.Attributes["type"] = "email";