Filter file type and size before uploading file

Question

Hi, How do i filter the file type and size of file before uploading it using file upload control?

narendra singh · Answer

yes it can be done using asp.net file upload control private bool CheckFileExt(FileUpload file1) { string ext = Path.GetExtension(file1.FileName); switch (ext.ToLower()) { case ".mp3": return CheckSize(file1); case ".mp4": return CheckSize(file1); case ".wmv": return CheckSize(file1); default: return false; } } //this method checks the size of the file being uploaded private bool CheckSize(FileUpload file1) { //as FileContent.Length returns value in byte if (file1.FileContent.Length / 1048576 > 4)//less than 4 MB return false; return true; } you can also find the source code here http://forum.tobysoftware.com/article.aspx?title=how_to_filter_file_type_and_size_before_uploading_file_using_aspnet_Fileupload_control&id=3

Jaganathan Bantheswaran · Answer

@Kavita , There is no in-built properties to filter based on size. You can check the file size while uploading and alert the user if file size is too big/small .

Jiteendra Sampathirao · Answer

Hi, refer these links: http://msdn.microsoft.com/en-us/library/aa479405.aspx http://www.java2s.com/Tutorial/VB/0240__Stream-File/Getfilesize.htm string xyzfile= "~/folder/jitendra.gif"; FileInfo flinfo= new FileInfo(Server.MapPath(xyzfile)); long fileInKB = flinfo.Length / 1024; long filebytes = flinfo.Length; Response.Write("File Size: " + filebytes.ToString() + " bytes (" + fileInKB.ToString() + " KB)");

Kavita B · Answer

Hi, I want to filter based on size also..

Jaganathan Bantheswaran · Answer

Hi, You can filter like this, ofd.Filter = "Media Files (Video)|*.avi;*.mp4;*.mpg;*.m4v;*.mkv;*.mts;*.m2ts;*.asf;*.mov;*.rm;*.flv;*.mod;*.tod;*.mpeg;*.vob|Media Files (Audio)|*.wma;*.aac;*.mp3;*.wav";

Filter file type and size before uploading file

Answers (5)