string index of c# code example
Example 1: c sharp index of substring
string str = "Hello World!"
str.IndexOf("o");
str.IndexOf("o", 6, 4);
str.LastIndexOf("o");
Example 2: index of string c#
string br1 = "0----+----1----+----2----+----3----+----4----+----5----+----6----+---";
string br2 = "012345678901234567890123456789012345678901234567890123456789012345678";
string str = "Now is the time for all good men to come to the aid of their country.";
int start;
int at;
int end;
int count;
end = str.Length;
start = end/2;
Console.WriteLine();
Console.WriteLine("All occurrences of 'he' from position {0} to {1}.", start, end-1);
Console.WriteLine("{1}{0}{2}{0}{3}{0}", Environment.NewLine, br1, br2, str);
Console.Write("The string 'he' occurs at position(s): ");
count = 0;
at = 0;
while((start <= end) && (at > -1))
{
count = end - start;
at = str.IndexOf("he", start, count);
if (at == -1) break;
Console.Write("{0} ", at);
start = at+1;
}
Console.WriteLine();
Example 3: letter at index of string c#
string s = "hello";
char c = s[1];
Example 4: strinng.indexOf c#
int index = String.IndexOf(char x);
int index = String.IndexOf(string x);