NeatUpload js 判断上传文件的大小是否超过了空间的大小
1.NeatUpload 的用法就不说了,搜索一下很多,配置下Web.config
  <httpModules>
       <add name="UploadHttpModule" type="Brettle.Web.NeatUpload.UploadHttpModule, Brettle.Web.NeatUpload"/>
</httpModules>
<httpRuntime executionTimeout="600" maxRequestLength="10485760" useFullyQualifiedRedirectUrl="false"/>
2.由于配置了上传文件的大小,前台上传的页面会产生大量的js文件,由于其中的
js中的一个文件WebForm_OnSubmit 函数导致 自定义的js验证函数无效,需要重写下这个函数,这个函数要放在页面中生成的WebForm_OnSubmit 的下面,不然,重写的也是无效的,不起什么作用
3.<script>
  function ToggleVisibility(id, type) 
        {
          el = document.getElementById(id);
         if(el.style)
             {
               if(type == 'on')
                 {
                     el.style.display = 'block';
                 } 
                else 
                 {
                     el.style.display = 'none';
                 }
             } 
            else 
             {
               if(type == 'on')
                {
                     el.display = 'block';
                } 
               else 
                {
                     el.display = 'none';
                }
             }
        }
</script>
<form id="form1" runat="server">
<upload:InputFile id="AttachFile" runat="server"></upload:InputFile>
      <asp:Button ID="Upload" runat="server" Text="上传"   OnClientClick="ToggleVisibility('ProgressBar','on')" OnClick="Upload_Click"/>
        <div id="ProgressBar"   style="display:none; width:auto;">
           <upload:progressbar id="pbProgressBar" runat="server" Inline="true" Width="500px" Height="35px" Triggers="Upload"> </upload:progressbar>
           </div>
<script>function WebForm_OnSubmit {
var tmpspace=0;//如果为1则说明空间不足,无法上传
var xmlhttp=new ActiveXObject("MSXML2.xmlHttp");
if(xmlhttp!=null)
{
var filepath=document.getElementById("AttachFile").value;//获取上传文件的路径
var url="Test.aspx?ID="+spaceID+"&filepath="+escape(filepath);
xmlhttp.open("POST",url,false);
xmlhttp.onreadystatechange=function(){
if(xmlhttp.readystate==4)
{ tmpspace=xmlhttp.responseText;
}
xmlhttp.send("");
}
if(tmpspace==1)
{
alert("空间不足,不能上传");
return false;
}
NeatUpLoad_OnSubmitForm_aspnetForm();
return ture;
}
}
</script>
</form>
4.Test.aspx
using System.IO;
int ID=int.parse(Request.QueryString("ID"));
//根据这个ID 计算空间的大小
string filepath=Request.QueryString("filepath");
FileInfo fn=new FileInfo(filepath);
long filesize=fn.length;
.................................
然后根据空间的大小和文件大小比较,是否可以上传 (自己定义:如果可以上传则为0 不可以上传则为1)
Response.Clear();
Response.Write("1");//不可以上传
Response.End();
 
                     
                    
                 
                    
                
 
                
            
         
         浙公网安备 33010602011771号
浙公网安备 33010602011771号