C# 0 The Complete Reference

PART I

C h a p t e r   7 :  

A r r a y s   a n d   S t r i n g s  

159

PART IPART I

    result = str1.CompareTo(str3);

    if(result == 0)

      Console.WriteLine("str1 and str3 are equal");

    else if(result < 0)

      Console.WriteLine("str1 is less than str3");

    else

      Console.WriteLine("str1 is greater than str3");

    Console.WriteLine();

    // Assign a new string to str2.

    str2 = "One Two Three One";

    // Search a string.

    idx = str2.IndexOf("One");

    Console.WriteLine("Index of first occurrence of One: " + idx);

    idx = str2.LastIndexOf("One");

    Console.WriteLine("Index of last occurrence of One: " + idx);

  }

}

This program generates the following output:

str1: When it comes to .NET programming, C# is #1.

Length of str1: 44

Lowercase version of str1:

    when it comes to .net programming, c# is #1.

Uppercase version of str1:

    WHEN IT COMES TO .NET PROGRAMMING, C# IS #1.

Display str1, one char at a time.

When it comes to .NET programming, C# is #1.

str1 == str2

str1 != str3

str1 is greater than str3

Index of first occurrence of One: 0

Index of last occurrence of One: 14

You can concatenate (join together) two strings using the 

+

 operator. For example, this 

statement:

string str1 = "One";

string str2 = "Two";

string str3 = "Three";

string str4 = str1 + str2 + str3;

initializes