C# Dictionary Errors

I am getting the two errors below not sure why.... I am super new to dictionaries

1. deposits.Add(deposit); // doesn't exist in current context

2.  while (true) //'Program' member names can not ne the same as thier enclosing name

class Program
    {
        static void Main(string[] args)
        {

            // cretae a dictionary where key is a account name and value - account amount
            // amout is initially zero
            Dictionary<string, double> accounts = new Dictionary<string, double>();
            accounts.Add("A", 0);
            accounts.Add("B", 0);
            accounts.Add("C", 0);

            // checked what we have
            foreach (KeyValuePair<string, double> item in accounts)
            {
                Console.WriteLine("Account {0}, amount = {1}", item.Key, item.Value);
            }
            // enter new amounts:
            // We cannot modify the dictionary in foreach loop
            // Therefore copy keys to a list:
            List<string> accountNames = new List<string>(accounts.Keys);
            foreach (string accountName in accountNames)
            {
                string line;
                while (true)// 'Program' member names can not ne the same as thier enclosing name
                {
                    Console.WriteLine(" Please enter new amount for the Account {0} ", accountName);
                    line = Console.ReadLine();
                    if (line.StartsWith("Z", StringComparison.CurrentCultureIgnoreCase)) break;
                    Double amount = Convert.ToDouble(line);
                    List<KeyValuePair<string, double>> deposits = new List<KeyValuePair<string, double>>();
                    deposits.Add(deposit); // ??? getting error here-- doesn't exist in current context

                }
            }

            // check again
            foreach (KeyValuePair<string, double> item in accounts)
            {
                Console.WriteLine("Account {0}, amount = {1}", item.Key, item.Value);
            }
            Console.ReadLine();

        }
    }
}

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