StringCollection.Insert メソッドとは? わかりやすく解説

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StringCollection.Insert メソッド

StringCollection 内の指定したインデックス位置に、文字列挿入します

名前空間: System.Collections.Specialized
アセンブリ: System (system.dll 内)
構文構文

例外例外
例外種類条件

ArgumentOutOfRangeException

index が 0 未満です。

または

indexCount より大きい値です。

解説解説
使用例使用例

StringCollection新し要素追加するコード例次に示します

Imports System
Imports System.Collections
Imports System.Collections.Specialized

Public Class SamplesStringCollection   

   Public Shared Sub Main()

      ' Creates and initializes a new StringCollection.
      Dim myCol As New StringCollection()

      Console.WriteLine("Initial contents of the StringCollection:")
      PrintValues(myCol)

      ' Adds a range of elements from an array to the end of the StringCollection.
      Dim myArr() As [String] = {"RED",
 "orange", "yellow",
 "RED", "green", "blue", "RED", "indigo",
 "violet", "RED"}
      myCol.AddRange(myArr)

      Console.WriteLine("After adding a range of elements:")
      PrintValues(myCol)

      ' Adds one element to the end of the StringCollection and inserts
 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:")
      PrintValues(myCol)

   End Sub 'Main

   Public Shared Sub PrintValues(myCol
 As IEnumerable)
      Dim obj As [Object]
      For Each obj In  myCol
         Console.WriteLine("   {0}", obj)
      Next obj
      Console.WriteLine()
   End Sub 'PrintValues

End Class 'SamplesStringCollection
 


'This code produces the following output.
'
'Initial contents of the StringCollection:
'
'After adding a range of elements:
'   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
'

using System;
using System.Collections;
using System.Collections.Specialized;

public class SamplesStringCollection  {

   public static void Main()
  {

      // Creates and initializes a new StringCollection.
      StringCollection myCol = new StringCollection();

      Console.WriteLine( "Initial contents of the StringCollection:" );
      PrintValues( myCol );

      // Adds 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 );

      Console.WriteLine( "After adding a range of elements:" );
      PrintValues( myCol );

      // Adds one element to the end of the StringCollection and inserts
 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:" );
      PrintValues( myCol );

   }

   public static void PrintValues(
 IEnumerable myCol )  {
      foreach ( Object obj in myCol )
         Console.WriteLine( "   {0}", obj );
      Console.WriteLine();
   }

}

/*
This code produces the following output.

Initial contents of the StringCollection:

After adding a range of elements:
   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

*/
#using <System.dll>

using namespace System;
using namespace System::Collections;
using namespace System::Collections::Specialized;
void PrintValues( IEnumerable^ myCol );
int main()
{
   
   // Creates and initializes a new StringCollection.
   StringCollection^ myCol = gcnew StringCollection;
   Console::WriteLine( "Initial contents of the StringCollection:" );
   PrintValues( myCol );
   
   // Adds a range of elements from an array to the end of the StringCollection.
   array<String^>^myArr = {"RED","orange","yellow"
,"RED","green","blue","RED","indigo"
,"violet","RED"};
   myCol->AddRange( myArr );
   Console::WriteLine( "After adding a range of elements:" );
   PrintValues( myCol );
   
   // Adds one element to the end of the StringCollection and inserts
 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:" );
   PrintValues( myCol );
}

void PrintValues( IEnumerable^ myCol )
{
   IEnumerator^ myEnum = myCol->GetEnumerator();
   while ( myEnum->MoveNext() )
   {
      Object^ obj = safe_cast<Object^>(myEnum->Current);
      Console::WriteLine( "   {0}", obj );
   }

   Console::WriteLine();
}

/*
This code produces the following output.

Initial contents of the StringCollection:

After adding a range of elements:
   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

*/
import System.* ;
import System.Collections.* ;
import System.Collections.Specialized.* ;

public class SamplesStringCollection
{      
    public static void main(String[]
 args)
    {        
        // Creates and initializes a new StringCollection.
        StringCollection myCol =  new StringCollection();
        
        Console.WriteLine("Initial contents of the StringCollection:");
        PrintValues(myCol);
        
        // Adds 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);
        
        Console.WriteLine("After adding a range of elements:");
        PrintValues(myCol);
        
        // Adds one element to the end of the StringCollection and inserts
        // 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:");
        PrintValues(myCol);
    } //main

    public static void PrintValues(IEnumerable
 myCol) 
    {
        Object obj = null;
        IEnumerator objEnum = myCol.GetEnumerator();

        while (objEnum.MoveNext()) { 
            obj = objEnum.get_Current();
            Console.WriteLine("   {0}", obj);
        }

        Console.WriteLine();
    } //PrintValues
} //SamplesStringCollection 

/*
This code produces the following output.

Initial contents of the StringCollection:

After adding a range of elements:
   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

*/
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バージョン情報バージョン情報
参照参照
関連項目
StringCollection クラス
StringCollection メンバ
System.Collections.Specialized 名前空間
Count
Add


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