String.Format or string.Contains? C# .NET

I tried using String.Format that is commented below but it doesn't work. I tried using contains but it seems like it only takes a certain amount of characters its not reading 2 numbers just 1. I want it to really use the string.format. I pretty much want to save the two numbers from the textbox and display them and in that format only.

What do i need to do?

            string s = textBox1.ToString();

            string text = textBox1.Text;
            text = text.Trim().ToLower();



            MatchCollection matches = Regex.Matches(s, @"d+");

            string[] result = matches.Cast<Match>()
                                     .Take(2)
                                     .Select(match => match.Value)
                                     .ToArray();

//string c = string.Format("The alarm id from video server number {0} is {1}.", result[0], result[1]);

            if (s.Contains("The alarm id from video server"))
            {
                if (matches.Count == 2)
                { 
                    AlarmID.Text = result[0];
                    ServerNum.Text = result[1];
                }
                else
                {
                    MessageBox.Show("Missing number(s) or too many!");
                }

            }