<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<script type="text/javascript">...
function changeimg(imgid,fileid)
...{
document.getElementById(imgid).src=document.getElementById(fileid).value;
}
</script>
<title>无标题页</title>
</head>
<body>
<form id="form1" runat="server">
<img src="" style="width: 117px; height: 63px" id="image1" />
<input id="File2" type="file" runat="server" onchange="changeimg('image1','File2')"/>
</form>
</body>
</html>效果如图:

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