本文整理汇总了C#中System.Collections.Specialized.StringCollection类的典型用法代码示例。如果您正苦于以下问题:C# StringCollection类的具体用法?C# StringCollection怎么用?C# StringCollection使用的例子?那么, 这里精选的类代码示例或许可以为您提供帮助。
StringCollection类属于System.Collections.Specialized命名空间,在下文中一共展示了StringCollection类的1个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: Main
//引入命名空间
using System;
using System.Collections;
using System.Collections.Specialized;
public class SamplesStringCollection {
public static void Main() {
// Create and initializes a new StringCollection.
StringCollection myCol = new StringCollection();
// Add a range of elements from an array to the end of the StringCollection.
String[] myArr = new String[] { "RED", "orange", "yellow", "RED", "green", "blue", "RED", "indigo", "violet", "RED" };
myCol.AddRange( myArr );
// Display the contents of the collection using foreach. This is the preferred method.
Console.WriteLine( "Displays the elements using foreach:" );
PrintValues1( myCol );
// Display the contents of the collection using the enumerator.
Console.WriteLine( "Displays the elements using the IEnumerator:" );
PrintValues2( myCol );
// Display the contents of the collection using the Count and Item properties.
Console.WriteLine( "Displays the elements using the Count and Item properties:" );
PrintValues3( myCol );
// Add one element to the end of the StringCollection and insert another at index 3.
myCol.Add( "* white" );
myCol.Insert( 3, "* gray" );
Console.WriteLine( "After adding \"* white\" to the end and inserting \"* gray\" at index 3:" );
PrintValues1( myCol );
// Remove one element from the StringCollection.
myCol.Remove( "yellow" );
Console.WriteLine( "After removing \"yellow\":" );
PrintValues1( myCol );
// Remove all occurrences of a value from the StringCollection.
int i = myCol.IndexOf( "RED" );
while ( i > -1 ) {
myCol.RemoveAt( i );
i = myCol.IndexOf( "RED" );
}
// Verify that all occurrences of "RED" are gone.
if ( myCol.Contains( "RED" ) )
Console.WriteLine( "*** The collection still contains \"RED\"." );
Console.WriteLine( "After removing all occurrences of \"RED\":" );
PrintValues1( myCol );
// Copy the collection to a new array starting at index 0.
String[] myArr2 = new String[myCol.Count];
myCol.CopyTo( myArr2, 0 );
Console.WriteLine( "The new array contains:" );
for ( i = 0; i < myArr2.Length; i++ ) {
Console.WriteLine( " [{0}] {1}", i, myArr2[i] );
}
Console.WriteLine();
// Clears the entire collection.
myCol.Clear();
Console.WriteLine( "After clearing the collection:" );
PrintValues1( myCol );
}
// Uses the foreach statement which hides the complexity of the enumerator.
// NOTE: The foreach statement is the preferred way of enumerating the contents of a collection.
public static void PrintValues1( StringCollection myCol ) {
foreach ( Object obj in myCol )
Console.WriteLine( " {0}", obj );
Console.WriteLine();
}
// Uses the enumerator.
// NOTE: The foreach statement is the preferred way of enumerating the contents of a collection.
public static void PrintValues2( StringCollection myCol ) {
StringEnumerator myEnumerator = myCol.GetEnumerator();
while ( myEnumerator.MoveNext() )
Console.WriteLine( " {0}", myEnumerator.Current );
Console.WriteLine();
}
// Uses the Count and Item properties.
public static void PrintValues3( StringCollection myCol ) {
for ( int i = 0; i < myCol.Count; i++ )
Console.WriteLine( " {0}", myCol[i] );
Console.WriteLine();
}
}
输出:
Displays the elements using foreach: RED orange yellow RED green blue RED indigo violet RED Displays the elements using the IEnumerator: RED orange yellow RED green blue RED indigo violet RED Displays the elements using the Count and Item properties: RED orange yellow RED green blue RED indigo violet RED After adding "* white" to the end and inserting "* gray" at index 3: RED orange yellow * gray RED green blue RED indigo violet RED * white After removing "yellow": RED orange * gray RED green blue RED indigo violet RED * white After removing all occurrences of "RED": orange * gray green blue indigo violet * white The new array contains: [0] orange [1] * gray [2] green [3] blue [4] indigo [5] violet [6] * white After clearing the collection: