使用jQuery在ASP.NET中測量上傳文件的大小

如何使用jquery測量文件大小，下面的代碼在firefox，chrome中可以正常工作，但它在IE（7/8/9）中不起作用。任何一個可以幫助我如何衡量IE使用jQuery在ASP.NET中測量上傳文件的大小

文件大小

var fi = document.getElementById('loadfile'); 
var sizeInMB = fi.files[0].size; 
    sizeInMB = (sizeInMB/(1024 * 1024)); 
if (sizeInMB > 20) 
    alert("File size more than 20MB"); 
else 
    alert("File size less than 20MB");

來源

2012-04-04 user973063

你看到這個答案？ http://stackoverflow.com/a/1440804/882630 – lukkea 2012-04-04 11:07:47

可能的重複[查找文件大小與jQuery]（http://stackoverflow.com/questions/1440723/find-file-size-with-jquery） – Gray 2012-04-04 12:37:44

@格雷 - 以前的評論可能重複！ – lukkea 2012-04-04 12:58:21

試試這個方法：

<script runat="server"> 

    protected void UploadButton_Click(object sender, EventArgs e) 
    { 

     string savePath = @"c:\temp\uploads\"; 


     if (FileUpload1.HasFile) 
     {     
      // Get the size in bytes of the file to upload. 
      int fileSize = FileUpload1.PostedFile.ContentLength; 

      // Allow only files less than 2,100,000 bytes (approximately 2 MB) to be uploaded. 
      if (fileSize < 2100000) 
      { 

       // Append the name of the uploaded file to the path. 
       savePath += Server.HtmlEncode(FileUpload1.FileName); 


       FileUpload1.SaveAs(savePath); 


       UploadStatusLabel.Text = "Your file was uploaded successfully."; 
      } 
      else 
      { 

       UploadStatusLabel.Text = "Your file was not uploaded because " + 
             "it exceeds the 2 MB size limit."; 
      } 
     } 
     else 
     { 

      UploadStatusLabel.Text = "You did not specify a file to upload."; 
     } 
    } 
</script>

來源

2012-04-04 11:55:57 coder

使用jQuery在ASP.NET中測量上傳文件的大小

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