C# 0 The Complete Reference

a

, T 

v

,

                                               int 

star t

)

Returns the index of the last element within a range of the one-dimensional 

array 

a

 that has the value specified by 

v.

 The search proceeds in reverse 

order, beginning at 

a

[

star t

] and stopping at 

a

[0]. Returns –1 if the value is 

not found. 

public static int LastIndexOf(Array 

a

, object 

v

,

                                         int 

star t

, int 

count

)

Returns the index of the last element within a range of the one-dimensional 

array 

a

 that has the value specified by 

v.

 The search proceeds in reverse order, 

beginning at 

a

[

start

] and running for 

count

 elements. Returns –1 if the value is 

not found within the specified range. (If the array has a lower bound other than 

0, then the failure value is the lower bound –1.)

public static int LastIndexOf(T[ ] 

a

, T 

v

,

                                               int 

star t

,

                                               int 

count

)

Returns the index of the last element within a range of the one-dimensional 

array 

a

 that has the value specified by 

v.

 The search proceeds in reverse 

order, beginning at 

a

[

star t

] and running for 

count

 elements. Returns –1 if the 

value is not found within the specified range. 

public static void Resize(ref T[ ] 

a

, int 

size

)

Sets the size of 

a

 to 

size.

public static void Reverse(Array 

a

)

Reverses the elements in 

a.

public static void Reverse(Array 

a

, int 

star t

,

                                      int 

count

)

Reverses a range of elements in 

a.

 The range reversed begins at 

a

[

star t

] and 

runs for 

count

 elements.

public void SetValue(object 

v

, int 

idx

)

Sets the value of the element at index 

idx

 within the invoking array to 

v.

 The 

array must be one-dimensional.

public void SetValue(object 

v

, long 

idx

)

Sets the value of the element at index 

idx

 within the invoking array to 

v.

 The 

array must be one-dimensional.

public void SetValue(object 

v

, int 

idx1

, int 

idx2

)

Sets the value of the element at indices [

idx1

,

idx2

] within the invoking array 

to

v.

 The array must be two-dimensional.

public void SetValue(object 

v

,

                              long 

idx1

, long 

idx2

)

Sets the value of the element at indices [

idx1

,

idx2

] within the invoking array 

to

v.

 The array must be two-dimensional.

public void SetValue(object 

v

, int 

idx1

,

                              int 

idx2

, int 

idx3

)

Sets the value of the element at indices [

idx1

,

idx2

,

idx3

] within the invoking 

array to 

v.

 The array must be three-dimensional.

public void SetValue(object 

v

, long 

idx1

,

                              long 

idx2

, long 

idx3

)

Sets the value of the element at indices [

idx1

,

idx2

,

idx3

] within the invoking 

array to 

v.

 The array must be three-dimensional.

public void SetValue(object 

v

, int[ ] 

idxs

)

Sets the value of the element at the specified indices within the invoking array 

to

v.

 The array must have as many dimensions as 

idxs

 has elements.

public void SetValue(object 

v

, long[ ] 

idxs

)

Sets the value of the element at the specified indices within the invoking array 

to

v.

 The array must have as many dimensions as 

idxs

 has elements.

public static void Sor t(Array 

a

)

Sor ts 

a

 into ascending order. The array must be one-dimensional.

public static void Sor t(T[ ] 

a

)

Sor ts 

a

 into ascending order. The array must be one-dimensional. 

public static void Sor t(Array 

a

,

                                 IComparer 

comp

)

Sor ts 

a

 into ascending order using the comparison method specified by 

comp.

 The array must be one-dimensional.

public static void Sor t(T[ ] 

a

,

                               Comparison 

comp

)

Sor ts 

a

 into ascending order using the comparison method specified by 

comp.

 The array must be one-dimensional.

public static void Sor t(T[ ] 

a

,

                                IComparer 

comp

)

Sor ts 

a

 into ascending order using the comparison method specified by 

comp.

 The array must be one-dimensional.

public static void Sor t(Array 

k

, Array 

v

)

Sor ts a pair of one-dimensional arrays into ascending order. The 

k

 array 

contains the sor t keys. The 

v

 array contains the values linked to those keys. 

Thus, the two arrays contain key/value pairs. After the sor t, both arrays are 

in ascending-key order.

T

ABLE

 21-12 

Methods Defi ned by 

Array

(continued)

Method

Meaning

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