namespace UserManagement.Helper { public static class DocumentType { public static string GetDocumentType(string extension) { string type = string.Empty; switch (extension) { case ".pdf": type = "pdf"; break; case ".docx": type = "mammoth"; break; case ".pptx": type = "office"; break; default: type = ""; break; } return type; } public static string Get64ContentStartText(string extension) { string type = string.Empty; switch (extension) { case ".pdf": type = "data:application/pdf;base64,"; break; case ".docx": type = "data:application/vnd.openxmlformats-officedocument.wordprocessingml.document;base64,"; break; case ".pptx": type = "data:application/vnd.openxmlformats-officedocument.presentationml.presentation;base64,"; break; default: type = ""; break; } return type; } } }