C# 0 The Complete Reference

PART II

C h a p t e r   2 2 :  

S t r i n g s   a n d   F o r m a t t i n g    

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public int

    LastIndexOf(string 

str

, int 

star t

,

                      int 

count

)

Returns the index of the last occurrence of 

str

 within 

the invoking string. The search proceeds in reverse 

order, beginning at the index specified by 

star t

 and 

running for 

count

 elements. Returns –1 if 

str

 is not 

found.

public int

    LastIndexOf(string 

str

,

                     StringComparison 

how

)

Returns the index of the last occurrence of 

str

 within 

the invoking string. How the search is per formed is 

specified by 

how

. Returns –1 if 

str

 is not found. 

public int

    LastIndexOf(string 

str

, int 

star t

,

                      StringComparison 

how

)

Returns the index of the last occurrence of 

str

 within 

a range of the invoking string. The search proceeds 

in reverse order, beginning at the index specified 

by

star t

 and stopping at 0. How the search is 

per formed is specified by 

how.

 Returns –1 if 

str

 is 

not found.

public int

    LastIndexOf(string 

str

, int 

star t

,

                      int 

count

,

                      StringComparison 

how

)

Returns the index of the last occurrence of 

str

 within 

the invoking string. The search proceeds in reverse 

order, beginning at the index specified by 

star t

and running for 

count

 elements. How the search is 

per formed is specified by 

how.

 Returns –1 if 

str

 is 

not found. 

public bool Star tsWith(string 

str

)

Returns true if the invoking string begins with the 

string passed in 

str.

 Other wise, false is returned. 

public bool

    Star tsWith(string 

str

,

                    StringComparison 

how

)

Returns true if the invoking string begins with the 

string passed in 

str.

 Other wise, false is returned. 

How the search is per formed is specified by 

how

.

public bool

    Star tsWith(string 

str

,

                    bool 

ignoreCase

,

                    CultureInfo 

ci

)

Returns true if the invoking string begins with the 

string passed in 

str.

 Other wise, false is returned. 

If

ignoreCase

 is 

true

, the search ignores case 

differences. Other wise, case differences matter. 

The search is conducted using the cultural 

information passed in 

ci.

Method

Description

T

ABLE

 22-3 

The Search Methods Offered by 

String

(continued)