Comparing Strings
The
Compare method compares two strings and returns an integer value. The
return value of Compare method can be less than zero, greater than zero
or equals to zero.
| Value |
Meaning |
| Less than zero |
When first string is less than second. |
| Zero |
When both strings are equal. |
| Greater than zero |
When first string is greater than zero. |
The following code compares two strings and return results on the System console.
// Comparing two strings
//====================================
string str1 = "ppp";
string str2 = "ccc";
int res = String.Compare(str1, str2);
Console.WriteLine("First result:" +res.ToString());
str2 = "ttt"; res = String.Compare(str1, str2);
Console.WriteLine("Second result:" +res.ToString());
str1 = "ttt"; res = String.Compare(str1, str2);
Console.WriteLine("Third result:" +res.ToString));
//====================================
TheCompareTo method is an instance method. It compares a value (either a
string or on object) with a string instance. Return values of this
method are same as the Compare method. The following source code
compares two strings.
// CompareTo Method
string str = "kkk";
Console.WriteLine( str.CompareTo(str1) );
Read C# Strings
to learn more about strings in C#.