如何在 ASP.net Ajax文件上传器中验证文件大小

本文关键字：验证 文件大小 文件 ASP net Ajax | 更新日期: 2023-09-27 18:35:31

我正在使用AjaxFileUploader在我的 ASP.net 项目中上传多个文件。

我想在将文件上传到 4 MB 之前验证文件大小。

我的代码是：

 <ajaxToolkit:AjaxFileUpload
    id="ajaxUpload1" OnUploadComplete="ajaxUpload1_OnUploadComplete"
    ThrobberID="MyThrobber1" MaximumNumberOfFiles="5" runat="server" AllowedFileTypes="swf,pdf"></ajaxToolkit:AjaxFileUpload>
    <asp:Image id="MyThrobber1" ImageUrl="~/images/loading.gif" Style="display:None" runat="server" />

和

  protected void ajaxUpload1_OnUploadComplete(object sender, AjaxFileUploadEventArgs e)
    {
            int fileSize = e.FileSize;
                // fileSize in bytes
                if (fileSize < 4194304)
                {
                    //String currentDir = FileManager1.CurrentDirectory.PhysicalPath;
                    String FilePath = Path.Combine(currentDir, e.FileName);
                    // Save upload file to the file system
                    ajaxUpload1.SaveAs(FilePath);
                }
   }

如何在 ASP.net Ajax文件上传器中验证文件大小

更新 试试这个： 

protected void ajaxUpload1_OnUploadComplete(object sender, AjaxFileUploadEventArgs e)
{
   try
   {
           int fileSize = e.FileSize;
     //String currentDir = FileManager1.CurrentDirectory.PhysicalPath;
      String FilePath = Path.Combine(currentDir, e.FileName);
            // fileSize in bytes
            if (fileSize > 4194304)
            {
             ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "SelectDetails", "alert('You Exceed the limit.');", true);    
              return;
            }
                // Save upload file to the file system
                ajaxUpload1.SaveAs(FilePath);
    }
 catch (Exception ex)    
  {
    throw ex;
  }
}
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