FileUpload浏览图片之后显示浏览的图片

FileUpload浏览图片之后显示浏览的图片  

2010-10-08 10:04:17|  分类： Asp.net |字号 订阅

 http://blog.csdn.net/fishguo224/article/details/6336195

<img id="imgAtt" src="nullImg.gif" border="0" runat="server" style="height:250px; 300px;" /></br><asp:RegularExpressionValidator ID="RegularExpressionValidator1" runat="server" ControlToValidate="File1" ValidationGroup="ValAtt"
                        ErrorMessage="只能上传图片格式" ValidationExpression="^.*?\.(jpg|jpeg|bmp|gif|JPG|GIF|png|PNG|BMP|ico|)$"
                        ></asp:RegularExpressionValidator></br>
            <input type="file" id="File1" name="File1" runat="server" style="border: 1px solid #333333; background-color: #999999; 280px" onchange="ChangeImg()"  />

<script type="text/javascript">
        function ChangeImg() {
            var obj = document.getElementById("<%= imgAtt.ClientID %>");
            var img = document.getElementById("<%=File1.ClientID %>");
            var tmp = img.value.substr(0, img.value.indexOf(":") + 1);
            var url = img.value.replace(tmp, "file://");
            obj.src = url;

        }

    </script>