substring 1 is not valid fomat specifier code example

Example 1: string format c#

using System;

namespace FormatingTest
{
    class Program
    {
        static void Main(string[] args)
        {
            string s = "Name:{0} {1}, Location:{2}, Age:{3}";
            string msg = string.Format(s, "Ram", "Singh", "Mumbai", 32);
            Console.WriteLine("Format Result: {0}", msg);
            Console.WriteLine("\nPress Enter Key to Exit..");
            Console.ReadLine();
        }
    }
}

Example 2: mvc string format

@String.Format("{0:dd MMM yyyy HH:mm}", item.Date).ToString()