FileUpload上传图片前首先预览一下
<div id="cnblogs_post_body">看看效果：http://images.cnblogs.com/cnblogs_com/insus/fileupload_preivew.gif
在专案中，创建aspx页面，拉上FileUpload控件一个Image，将用来预览上传时的图片。
<divclass="cnblogs_code">http://images.cnblogs.com/OutliningIndicators/ContractedBlock.gifhttp://images.cnblogs.com/OutliningIndicators/ExpandedBlockStart.gifView Code <div id="cnblogs_code_open_3c486e4d-5e75-470c-91b7-68042b13d1ac" class="cnblogs_code_hide"><%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default2.aspx.cs" Inherits="Default2" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<table>
<tr>
<td style="vertical-align: top; width: 10%;">
<fieldset>
<legend>选择图片</legend>
<asp:FileUpload ID="FileUpload1" runat="server" />
</fieldset>
</td>
<td style="vertical-align: top; width: 90%;">
<fieldset>
<legend>预览</legend>
<asp:Image ID="Image1" runat="server" Visible="false" />
</fieldset>
</td>
</tr>
</table>
</div>
</form>
</body>
</html>
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