.net上传图片产生预览效果的常用代码
asp.net开发网站时，经常要上传图片。本文介绍新的上传前预览图片的处理方式。代码很简单，直接贴代码了。也是比较常用的图片预览效果之一<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>Asp.net上传图片产生预览效果</title>
<script type="text/javascript">
function show1(upimg)
{
var dd=document.getElementById("divview");
dd.filters.item("DXImageTransform.Microsoft.AlphaImageLoader").src = upimg;
dd.style.width = 100;
dd.style.height = 100;
dd.filters.item("DXImageTransform.Microsoft.AlphaImageLoader").sizingMethod = 'scale';
}
</script>
</head>
<body>
<form id="form1" runat="server">
按件中调用JS触发事件：<br />
<asp:FileUpload ID="fuFile" onpropertychange="show1(this.value)" runat="server" />
div的样式<br />
<div id="divview" style="filter: progid:DXImageTransform.Microsoft.AlphaImageLoader(sizingMethod=image);
width: 100px; height: 100px">
</div>
</form>
</body>
</html>
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