本文整理匯總了C#中System.Array.LastIndexOf方法的典型用法代碼示例。如果您正苦於以下問題：C# Array.LastIndexOf方法的具體用法？C# Array.LastIndexOf怎麽用？C# Array.LastIndexOf使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類System.Array的用法示例。
在下文中一共展示了Array.LastIndexOf方法的3個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的C#代碼示例。
示例1: typeof
// Creates and initializes a new Array with three elements of the same value.
Array myArray=Array.CreateInstance( typeof(String), 12 );
myArray.SetValue( "the", 0 );
myArray.SetValue( "quick", 1 );
myArray.SetValue( "brown", 2 );
myArray.SetValue( "fox", 3 );
myArray.SetValue( "jumps", 4 );
myArray.SetValue( "over", 5 );
myArray.SetValue( "the", 6 );
myArray.SetValue( "lazy", 7 );
myArray.SetValue( "dog", 8 );
myArray.SetValue( "in", 9 );
myArray.SetValue( "the", 10 );
myArray.SetValue( "barn", 11 );
// Displays the values of the Array.
Console.WriteLine( "The Array contains the following values:" );
PrintIndexAndValues( myArray );
// Searches for the last occurrence of the duplicated value.
String myString = "the";
int myIndex = Array.LastIndexOf( myArray, myString );
Console.WriteLine( "The last occurrence of \"{0}\" is at index {1}.", myString, myIndex );
// Searches for the last occurrence of the duplicated value in the first section of the Array.
myIndex = Array.LastIndexOf( myArray, myString, 8 );
Console.WriteLine( "The last occurrence of \"{0}\" between the start and index 8 is at index {1}.", myString, myIndex );
// Searches for the last occurrence of the duplicated value in a section of the Array.
// Note that the start index is greater than the end index because the search is done backward.
myIndex = Array.LastIndexOf( myArray, myString, 10, 6 );
Console.WriteLine( "The last occurrence of \"{0}\" between index 5 and index 10 is at index {1}.", myString, myIndex );
void PrintIndexAndValues( Array anArray ) {
for ( int i = anArray.GetLowerBound(0); i <= anArray.GetUpperBound(0); i++ )
Console.WriteLine( "\t[{0}]:\t{1}", i, anArray.GetValue( i ) );
}輸出：
The Array contains the following values: [0]: the [1]: quick [2]: brown [3]: fox [4]: jumps [5]: over [6]: the [7]: lazy [8]: dog [9]: in [10]: the [11]: barn The last occurrence of "the" is at index 10. The last occurrence of "the" between the start and index 8 is at index 6. The last occurrence of "the" between index 5 and index 10 is at index 10.
示例2: foreach
string[] dinosaurs = { "Tyrannosaurus",
"Amargasaurus",
"Mamenchisaurus",
"Brachiosaurus",
"Deinonychus",
"Tyrannosaurus",
"Compsognathus" };
Console.WriteLine();
foreach(string dinosaur in dinosaurs)
{
Console.WriteLine(dinosaur);
}
Console.WriteLine(
"\nArray.LastIndexOf(dinosaurs, \"Tyrannosaurus\"): {0}",
Array.LastIndexOf(dinosaurs, "Tyrannosaurus"));
Console.WriteLine(
"\nArray.LastIndexOf(dinosaurs, \"Tyrannosaurus\", 3): {0}",
Array.LastIndexOf(dinosaurs, "Tyrannosaurus", 3));
Console.WriteLine(
"\nArray.LastIndexOf(dinosaurs, \"Tyrannosaurus\", 4, 4): {0}",
Array.LastIndexOf(dinosaurs, "Tyrannosaurus", 4, 4));輸出：
Tyrannosaurus Amargasaurus Mamenchisaurus Brachiosaurus Deinonychus Tyrannosaurus Compsognathus Array.LastIndexOf(dinosaurs, "Tyrannosaurus"): 5 Array.LastIndexOf(dinosaurs, "Tyrannosaurus", 3): 0 Array.LastIndexOf(dinosaurs, "Tyrannosaurus", 4, 4): -1
示例3: Main
//引入命名空間
using System;
class MainClass
{
public static void Main()
{
int[] intArray = {1, 2, 1, 3};
Console.WriteLine("intArray:");
for (int i = 0; i < intArray.Length; i++)
{
Console.WriteLine("intArray[" + i + "] = " +
intArray[i]);
}
int index = Array.IndexOf(intArray, 1);
Console.WriteLine("Array.IndexOf(intArray, 1) = " + index);
index = Array.LastIndexOf(intArray, 1);
Console.WriteLine("Array.LastIndexOf(intArray, 1) = " + index);
}
}