代码编辑器：
x
1
@{2
var imagePath=""; 3
if (Request["Choice"] != null)4
{imagePath="images/" + Request["Choice"];} 5
}6
<!DOCTYPE html>7
<meta charset="utf-8" />8
<h1>Display Images</h1> 9
<form method="post" action=""> 10
I want to see: 11
<select name="Choice"> 12
13
<option value="Photo1.jpg">Photo 1</option> 14
15
<option value="Photo2.jpg">Photo 2</option> 16
17
<option value="Photo3.jpg">Photo 3</option> 18
</select> 19
<input type="submit" value="Submit" /> 20
@if (imagePath != "")21
{<p><img src="@imagePath" alt="Sample" /></p>} 22
</form> 23