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POIs there a good way to use Console.ReadKey for choosing between values without doing a lot of conversion between types?
 

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  1. POIs there a good way to use Console.ReadKey for choosing between values without doing a lot of conversion between types?
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    <p>Im using Console.ReadKey() to choose from a number of options that varies from time to time. Before this initial code snippet there is a for loop that counts occurances into counter variable of type int.</p> <p>The point is to use Console.ReadKey() to get an int.</p> <pre><code>int choice = ReadKey(); Console.WriteLine(""); if (choice &lt; counter) { mail.to = result[counter-1].email; } </code></pre> <p>By using the following methods</p> <pre><code>static int ReadKey() { ConsoleKeyInfo choice = Console.ReadKey(); char convertedchoice = choice.KeyChar; string convertedchoice2 = convertedchoice.ToString(); int result = TryInt(convertedchoice2); return result; } static int TryInt(string totry) { while (true) { int result; if (int.TryParse(totry, out result)) { return result; } Console.WriteLine("Sorry, you need to enter a number. Try again."); } } </code></pre> <p>I tried using ToString() but this was the way that it would let me do it in the end. So this looks kind of inneffective to me and hence I would really appreciate some guidance as what to do differently?</p> <p>Edit:</p> <p>I ended up with a combination of all the good answers below. Thanks alot guys.</p> <pre><code>static int ReadKey() { while (true) { ConsoleKeyInfo choice = Console.ReadKey(); if (char.IsDigit(choice.KeyChar)) { int answer = Convert.ToInt32(choice.KeyChar); return answer - 48; //-48 because 0 is represented in unicode by 48 and 1 by 49 etc etc } Console.WriteLine("\nSorry, you need to input a number"); } } </code></pre>
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