If a user attempts to upload a size larger than the value specified here, the file will not be accepted and an error message will be displayed. Set this property to 0 to accept any files. Set the HtmlBoxUpload.UploadEnabled property to false to completely disable file upload.
Target Platforms: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2