Asp.net图片上传实现预览效果的简单代码

 <asp:fileupload id="fileupload1" runat="server" onpropertychange="show(this.value)"/>
        <asp:image id="image1" runat="server"  />

     <script type="text/javascript">
    function show(id)
    ...{
        document.getelementbyid("image1").src=id;
    }
    </script>

<div id="divview" style="filter : progid:dximagetransform.microsoft.alphaimageloader(sizingmethod=image);width: 166px; height: 190px">
<!--用于显示图片-->
</div>

<asp:fileupload id="fileupload3" runat="server" onpropertychange="show1(this.value)"/>
<script type="text/javascript">

function show1(upimg)
...{
 var dd=document.getelementbyid("divview");
 dd.filters.item("dximagetransform.microsoft.alphaimageloader").src = upimg;
 dd.style.width = 166;
 dd.style.height = 190;
 dd.filters.item("dximagetransform.microsoft.alphaimageloader").sizingmethod = scale;
}
</script>