Message Box Using Generic List

Message_Box_Using_Generic_List.cs

class MessageBox                                                    
{                                    
    private List<string> messages = new List<string>();        
    public int MessageCount { get { return messages.Count; } } 
    public string this [int i]                                 
    {
        get { return messages [i]; }                           
        set { messages[i] = value; }                           
    }
 
    public void AddMessage(string message)
    {
        messages.Add(message);
    }
 
    public int FindMessage(string message)
    {
        for (var i = 0; i < messages.Count(); i++)
        {
            if (message == messages[i])
            {
                return i;               
            }
        }
        return -1;
    }
 
    public void RemoveMessage(string message)
    {
        var i = FindMessage(message);
 
        if (i > -1)
        {
            messages.RemoveAt(i);       
        }
    }
 
    public override string ToString()
    {
        var sb = new System.Text.StringBuilder();
        foreach(var s in messages)
        {
            sb.Append(s);
            sb.Append('\n');
        }
        return sb.ToString();
    }
}