William Duffy

Glasgow Based C# ASP.NET Web Developer

Tag archive for ‘RegularExpressionValidator’

ASP.NET’s Image Upload Filetype Validation

ASP.NET’s file upload facility offers a quick, easy method for allowing users to upload content to your server. In many cases however the upload type must be restricted. For example, perhaps you are allowing users to upload a profile image. You certainly don’t want them to be capable of uploading an executable (.exe) file! The [...]