C# get position of a character from string

Question

My code is this:

 string dex = \"ABCD1234\";
 string ch = \"C\";
 string ch1, ch2;
    if (dex.Contains(ch))
    {
       string n = Convert.ToChar(dex);
                


        

Answer 1

string aS = "ABCDEFGHI";
char ch = 'C';
int idx = aS.IndexOf(ch);
MessageBox.Show(string.Format("{0} is in position {1} and between {2} and {3}", ch.ToString(), idx + 1, aS[idx - 1], aS[idx + 1]));

This wont handle if your character is at position zero and some other conditions, you'll have to figure them out.