Form Post Values using plain html controls in ASP.NET web forms

Question

I have a simple form with some plain html input like bellow using ASP.NET Web Forms (not MVC)

<table id="tbl_SchoolDetails">
    <tbody id="tbody_SchoolDetails">
        <tr>
            <td>
            School Name
        </td>
        <td>
            <input id="SchoolDetails_SchoolName" type="text" value="<%= ViewModel.School.Name %>" />
        </td>
    </tr>
    <tr>
        <td>
            Head Teacher
        </td>
        <td>
            <input id="SchoolDetails_HeadTeacher_Name" type="text" value="<%= ViewModel.School.HeadTeacher.Name %>" />
        </td>
    </tr>
    <tr>
        <td>
            Head Teacher Email
        </td>
        <td>
            <input id="SchoolDetails_HeadTeacher_Email" type="text" value="<%= ViewModel.School.HeadTeacher.Email %>" />
        </td>
    </tr>
    <tr>
        <td>
            Regent/Placement Contact
        </td>
        <td>
            <input id="SchoolDetails_Regent_Name" type="text" value="<%= ViewModel.School.Regent.Name %>" />
        </td>
    </tr>
</tbody>
</table>

When I do a post back to the server the values of the text boxes are not contained in the Request.Form element. Is there some reason for this that I am missing. I am reluctant to use asp.net controls as the page is later going to require a fair amount of javascript for changing the ui and other stuff.

I know I could easily do this with MVC but unfortunatly a change to this is not an option at this time.

Cheers Colin G

Answer 1

Give the input both an id and a name and see if that doesn't solve your problem.

<input id="SchoolDetails_SchoolName"
       name="SchoolDetails_SchoolName"
       type="text"
       value="<%= ViewModel.School.Name %>" />

The id property only identifies the tag within the DOM. The name property allows the tag to be posted back as part of a form. An ASP.NET control, or an HTML element with runat=server, automatically gets both the name and id properties assigned.