以下是示例

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>

<!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></title>
    <script type="text/javascript" language="javascript">
     
       function CheckFileType()
        {
            var objButton = document.getElementById("savebtn"); //上传按钮
            var objFileUpload=document.getElementById('FileUpload1');//FileUpload
           var objMSG=document.getElementById('msg');//显示提示信息用的DIV
            var FileName=new String(objFileUpload.value);//文件名
            var extension=new String (FileName.substring(FileName.lastIndexOf(".")+1,FileName.length));//文件扩展名
           
            if(extension=="jpg"||extension=="JPG")//你可以添加扩展名
            {
                 objButton.disabled=false;//启用上传按钮
                 objMSG.innerHTML="";
            }
            else
            {
                  objButton.disabled=true;//禁用上传按钮
                  objMSG.innerHTML="请选择正确的文件文件";
             }
      }
       
   
    </script>

    <style type="text/css">
        .style1
        {
            width: 103px;
        }
        #Text1
        {
            width: 277px;
        }
    </style>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <table style="width: 100%; ">
            <tr>
                <td class="style1">
                    <label id="title" >标题</label>
                </td
                <td>
                    <input id="Text1" runat="server" type="text" />
                    <asp:Button ID="savebtn0" runat="server" Text="修改" onclick="savebtn_Click" />
                </td>
            </tr>
            <tr>
                    <td class="style1">
                    <label id="Label1" >修改图片路径</label>
                </td>
                <td>
                     <input id="Radio1" type="radio" >使用默认路径</>
                </td>
                <td>
                    &nbsp;
                </td>
            </tr>
             <tr >
                <td class= "style1">
                   
                </td>
                <td><input id="Radio2" type="radio" >上传图片</>
                    <asp:FileUpload ID="FileUpload1" runat="server" onChange="javascript:CheckFileType();" />
                </td>
                <td>
                 <div id="msg"></div>
                    <asp:Button ID="savebtn" runat="server" Text="保存" onclick="savebtn_Click" />
                </td>
            </tr>
        </table>
    </div>
    </form>
</body>
</html>

posted on 2012-12-04 22:40  GIS_A_ERP  阅读(557)  评论(1编辑  收藏  举报