Cannot implicitly convert type string to int in C#

Question

I am fairly new to c# and I can't figure this out. The error says that I cannot convert string to int implicitly. Here is a snippet of my code. Thanks!

    private static int GenerateLetters(int size, bool lowercase) //added a return type
    {
        {
        string randomLetters = string.Empty;
        Random r = new Random();

        for (int i = 0; i < size; i++)
        {
            randomLetters += Convert.ToChar(r.Next(65, 90));                
        }

        if (lowercase)
            return randomLetters.ToLower();
        else
            return randomLetters.ToString();
            }
        }

here you are converting randomLetters into string using tostring and returning it... and in heading you have taken int value... that's why you are getting this error... Please change either of them.. — The Hungry Dictator
– The Hungry Dictator, Commented Jan 29, 2014 at 11:23

Selman Genç · Accepted Answer · 2014-01-29 11:30:55Z

2

You should change return type of your method to string

private static string GenerateLetters(...)

By the way it would be better if you change your method like this:

private static string GenerateLetters(int size, bool lowercase) //added a return type
{

     char[] chars = new char[size];
     Random r = new Random();

     for (int i = 0; i < size; i++)
     {
         chars[i] = Convert.ToChar(r.Next(65, 90));
     }

    if (lowercase)
           return new String(chars).ToLower();
     else
          return new String(chars);

}

edited Jan 29, 2014 at 11:30

answered Jan 29, 2014 at 11:20

Selman Genç

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2 Comments

dovid Over a year ago

chars[i] = Convert.ToChar(r.Next(65, 90)); not +=

Selman Genç Over a year ago

@user3248531 your welcome and please consider accepting my answer if it's solve your problem.

Kamil Budziewski · Accepted Answer · 2014-01-29 11:20:54Z

1

change

private static int GenerateLetters

to

private static string GenerateLetters

you are returning string but method has return parameter int. What you are returning has to be compatible with method stub.

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