从ASP.NET代码中的SELECT获取值

Question

I have the following content:

<input type="text" name="val1">
<select name="sel1"><option value="1">one</option><option value="2">two</option></select>

When iterating the formdata using

Request.Form.Allkeys

Both values (val1 and sel1) are inside the keys-List, but while Form["val1"] has the content I entered in the form, Form["sel1"] is always null.

(Using server-controls is not an option in this case)

Answer 1

The reason for that is because there is no value. No value will return null. The issue is with your HTML markup

<select name="sel1"><option>one</option><option>two</option></select>

Should be

<select name="sel1"><option value="one">one</option><option value="two">two</option></select>