// Ticket Search and Filter Pseudo Code with Error Handling, Data Validation, and Database Structure

​

// Data Model for Ticket

public class Ticket

{

    public int TicketId { get; set; }

    public string SubmittedBy { get; set; }

    public string Category { get; set; }

    public string Priority { get; set; }

    public string Description { get; set; }

    public List<string> Tags { get; set; }

    public List<string> Attachments { get; set; }

    public DateTime SubmittedAt { get; set; }

    public string Status { get; set; }

    public string AssignedTo { get; set; }

    public string ResolvedBy { get; set; }

    public DateTime ResolvedAt { get; set; }

}

​

// In-memory ticket data (replace this with actual database storage)

public static List<Ticket> Tickets = new List<Ticket>();

​

// Function to Search and Filter Tickets

public static List<Ticket> SearchAndFilterTickets(string searchTerm, string category, string priority, string assignedTo)

{

    // Validate search term, category, priority, and assignedTo

    searchTerm = searchTerm?.Trim();

    category = category?.Trim();

    priority = priority?.Trim();

    assignedTo = assignedTo?.Trim();

​

    // Filter tickets based on the provided criteria

    var filteredTickets = Tickets.Where(ticket =>

        (string.IsNullOrEmpty(searchTerm) || ticket.Description.Contains(searchTerm)) &&

        (string.IsNullOrEmpty(category) || ticket.Category.Equals(category, StringComparison.OrdinalIgnoreCase)) &&

        (string.IsNullOrEmpty(priority) || ticket.Priority.Equals(priority, StringComparison.OrdinalIgnoreCase)) &&

        (string.IsNullOrEmpty(assignedTo) || ticket.AssignedTo.Equals(assignedTo, StringComparison.OrdinalIgnoreCase))

    ).ToList();

​

    return filteredTickets;

}

​