IndentedTextWriter クラス

.NET Framework クラス ライブラリ リファレンス

IndentedTextWriter クラス

タブ文字列トークンを使用して、新しい行にインデントを設定できるテキスト ライタを提供します。

名前空間: System.CodeDom.Compiler
アセンブリ: System (system.dll 内)
構文

Visual Basic (宣言)

Public Class IndentedTextWriter
    Inherits TextWriter

Visual Basic (使用法)

Dim instance As IndentedTextWriter

C#

public class IndentedTextWriter : TextWriter

C++

public ref class IndentedTextWriter : public
 TextWriter

J#

public class IndentedTextWriter extends TextWriter

JScript

public class IndentedTextWriter extends
 TextWriter

解説

IndentedTextWriter は、タブ文字列を挿入して現在のインデント レベルを追跡するメソッドを提供することによって、TextWriter を拡張しています。複数のインデント レベルを使用して書式指定されたテキストは、生成されたコードで使用すると便利です。そのため、このクラスは CodeDOM コード ジェネレータの実装で使用されます。

タブ文字列は各インデントを構成する文字列です。通常、タブ文字列は空白を含みます。

メモ
このクラスには、すべてのメンバに適用されるクラス レベルのリンク確認要求と継承確認要求が格納されます。直前の呼び出し元または派生クラスに完全信頼のアクセス許可がない場合、SecurityException がスローされます。セキュリティ要求の詳細については、「リンク確認要求」および「継承確認要求」を参照してください。

使用例

IndentedTextWriter を使用して、複数の異なるインデント幅でテキストを入力するコード例を次に示します。

Visual Basic

Imports System
Imports System.CodeDom
Imports System.CodeDom.Compiler
Imports System.ComponentModel
Imports System.IO
Imports System.Windows.Forms

Public Class Form1
   Inherits System.Windows.Forms.Form
   Private textBox1 As System.Windows.Forms.TextBox
 
   
   Private Function CreateMultilevelIndentString()
 As String
        ' Create a TextWriter to use as the base output writer.
        Dim baseTextWriter As New
 System.IO.StringWriter
      
        ' Create an IndentedTextWriter and set the tab string to use
 
        ' as the indentation string for each indentation level.
        Dim indentWriter = New IndentedTextWriter(baseTextWriter,
 "    ")

        ' Set the indentation level.
        indentWriter.Indent = 0

        ' Output test strings at stepped indentations through a recursive
 loop method.
        WriteLevel(indentWriter, 0, 5)
      
        ' Return the resulting string from the base StringWriter.
        Return baseTextWriter.ToString()
    End Function

    Private Sub WriteLevel(ByVal
 indentWriter As IndentedTextWriter, ByVal
 level As Integer, ByVal totalLevels As Integer)
        ' Outputs a test string with a new-line character at the end.
        indentWriter.WriteLine(("This is a test phrase. Current
 indentation level: " + level.ToString()))

        ' If not yet at the highest recursion level, call this output
 method for the next level of indentation.
        If level < totalLevels Then
            ' Increase the indentation count for the next level of indented
 output.
            indentWriter.Indent += 1

            ' Call the WriteLevel method to write test output for the
 next level of indentation.
            WriteLevel(indentWriter, level + 1, totalLevels)

            ' Restores the indentation count for this level after the
 recursive branch method has returned.
            indentWriter.Indent -= 1

        Else
            ' Output a string using the WriteLineNoTabs method.
            indentWriter.WriteLineNoTabs("This is a test phrase
 written with the IndentTextWriter.WriteLineNoTabs method.")
        End If

        ' Outputs a test string with a new-line character at the end.
        indentWriter.WriteLine(("This is a test phrase. Current
 indentation level: " + level.ToString()))
    End Sub

    Private Sub button1_Click(ByVal
 sender As Object, ByVal
 e As System.EventArgs)
        textBox1.Text = CreateMultilevelIndentString()
    End Sub

    Public Sub New()
        Dim button1 As New
 System.Windows.Forms.Button
        Me.textBox1 = New System.Windows.Forms.TextBox
        Me.SuspendLayout()
        Me.textBox1.Anchor = CType(System.Windows.Forms.AnchorStyles.Top
 Or System.Windows.Forms.AnchorStyles.Bottom Or
 System.Windows.Forms.AnchorStyles.Left Or System.Windows.Forms.AnchorStyles.Right, System.Windows.Forms.AnchorStyles)
        Me.textBox1.Location = New System.Drawing.Point(8,
 40)
        Me.textBox1.Multiline = True
        Me.textBox1.Name = "textBox1"
        Me.textBox1.Size = New System.Drawing.Size(391,
 242)
        Me.textBox1.TabIndex = 0
        Me.textBox1.Text = ""
        button1.Location = New System.Drawing.Point(11, 8)
        button1.Name = "button1"
        button1.Size = New System.Drawing.Size(229, 23)
        button1.TabIndex = 1
        button1.Text = "Generate string using IndentedTextWriter"
        AddHandler button1.Click, AddressOf
 Me.button1_Click
        Me.AutoScaleBaseSize = New System.Drawing.Size(5,
 13)
        Me.ClientSize = New System.Drawing.Size(407,
 287)
        Me.Controls.Add(button1)
        Me.Controls.Add(Me.textBox1)
        Me.Name = "Form1"
        Me.Text = "IndentedTextWriter example"
        Me.ResumeLayout(False)
    End Sub

    <STAThread()> _
    Shared Sub Main()
        Application.Run(New Form1)
    End Sub
End Class

C#

using System;
using System.CodeDom;
using System.CodeDom.Compiler;
using System.ComponentModel;
using System.IO;
using System.Windows.Forms;

namespace IndentedTextWriterExample
{
    public class Form1 : System.Windows.Forms.Form
    {
        private System.Windows.Forms.TextBox textBox1;

        private string CreateMultilevelIndentString()
        {
            // Creates a TextWriter to use as the base output writer.
            System.IO.StringWriter baseTextWriter = new System.IO.StringWriter();
            

            // Create an IndentedTextWriter and set the tab string to
 use 
            // as the indentation string for each indentation level.
            System.CodeDom.Compiler.IndentedTextWriter indentWriter = new
 IndentedTextWriter(baseTextWriter, "    ");           

            // Sets the indentation level.
            indentWriter.Indent = 0;

            // Output test strings at stepped indentations through a
 recursive loop method.
            WriteLevel(indentWriter, 0, 5);

            // Return the resulting string from the base StringWriter.
            return baseTextWriter.ToString();
        }

        private void WriteLevel(IndentedTextWriter
 indentWriter, int level, int totalLevels)
        {
            // Output a test string with a new-line character at the
 end.
            indentWriter.WriteLine("This is a test phrase. Current indentation
 level: "+level.ToString());
            
            // If not yet at the highest recursion level, call this
 output method for the next level of indentation.
            if( level < totalLevels )
            {
                // Increase the indentation count for the next level
 of indented output.
                indentWriter.Indent++;

                // Call the WriteLevel method to write test output for
 the next level of indentation.
                WriteLevel(indentWriter, level+1, totalLevels);

                // Restores the indentation count for this level after
 the recursive branch method has returned.
                indentWriter.Indent--;
            }
            else
                // Outputs a string using the WriteLineNoTabs method.
                indentWriter.WriteLineNoTabs("This is a test phrase written
 with the IndentTextWriter.WriteLineNoTabs method.");

            // Outputs a test string with a new-line character at the
 end.
            indentWriter.WriteLine("This is a test phrase. Current indentation
 level: "+level.ToString());           
        }

        private void button1_Click(object sender,
 System.EventArgs e)
        {
            textBox1.Text = CreateMultilevelIndentString();
        }

        public Form1()
        {
            System.Windows.Forms.Button button1 = new System.Windows.Forms.Button();
            this.textBox1 = new System.Windows.Forms.TextBox();
            this.SuspendLayout();            
            this.textBox1.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top
 | System.Windows.Forms.AnchorStyles.Bottom) 
                | System.Windows.Forms.AnchorStyles.Left) 
                | System.Windows.Forms.AnchorStyles.Right)));
            this.textBox1.Location = new System.Drawing.Point(8,
 40);
            this.textBox1.Multiline = true;
            this.textBox1.Name = "textBox1";
            this.textBox1.Size = new System.Drawing.Size(391,
 242);
            this.textBox1.TabIndex = 0;
            this.textBox1.Text = "";
            button1.Location = new System.Drawing.Point(11, 8);
            button1.Name = "button1";
            button1.Size = new System.Drawing.Size(229, 23);
            button1.TabIndex = 1;
            button1.Text = "Generate string using
 IndentedTextWriter";
            button1.Click += new System.EventHandler(this.button1_Click);
            this.AutoScaleBaseSize = new System.Drawing.Size(5,
 13);
            this.ClientSize = new System.Drawing.Size(407,
 287);
            this.Controls.Add(button1);
            this.Controls.Add(this.textBox1);
            this.Name = "Form1";
            this.Text = "IndentedTextWriter example";
            this.ResumeLayout(false);     
   
        }

        [STAThread]
        static void Main() 
        {
            Application.Run(new Form1());
        }
    }
}

C++

#using <System.Drawing.dll>
#using <System.Windows.Forms.dll>
#using <System.dll>

using namespace System;
using namespace System::CodeDom;
using namespace System::CodeDom::Compiler;
using namespace System::ComponentModel;
using namespace System::IO;
using namespace System::Windows::Forms;
public ref class Form1: public
 System::Windows::Forms::Form
{
private:
   System::Windows::Forms::TextBox^ textBox1;

   String^ CreateMultilevelIndentString()
   {
      
      // Creates a TextWriter to use as the base output writer.
      System::IO::StringWriter^ baseTextWriter = gcnew System::IO::StringWriter;
      
      // Create an IndentedTextWriter and set the tab string to use
 
      // as the indentation string for each indentation level.
      System::CodeDom::Compiler::IndentedTextWriter^ indentWriter = gcnew IndentedTextWriter(
 baseTextWriter,"    " );
      
      // Sets the indentation level.
      indentWriter->Indent = 0;
      
      // Output test strings at stepped indentations through a recursive
 loop method.
      WriteLevel( indentWriter, 0, 5 );
      
      // Return the resulting string from the base StringWriter.
      return baseTextWriter->ToString();
   }


   void WriteLevel( IndentedTextWriter^ indentWriter, int
 level, int totalLevels )
   {
      
      // Output a test string with a new-line character at the end.
      indentWriter->WriteLine( "This is a test phrase. Current indentation
 level: {0}", level );
      
      // If not yet at the highest recursion level, call this output
 method for the next level of indentation.
      if ( level < totalLevels )
      {
         
         // Increase the indentation count for the next level of indented
 output.
         indentWriter->Indent++;
         
         // Call the WriteLevel method to write test output for the
 next level of indentation.
         WriteLevel( indentWriter, level + 1, totalLevels );
         
         // Restores the indentation count for this level after the
 recursive branch method has returned.
         indentWriter->Indent--;
      }
      else
      // Outputs a string using the WriteLineNoTabs method.
            indentWriter->WriteLineNoTabs( "This is a test phrase written
 with the IndentTextWriter.WriteLineNoTabs method." );
      // Outputs a test string with a new-line character at the end.
      indentWriter->WriteLine( "This is a test phrase. Current indentation
 level: {0}", level );
   }


   void button1_Click( Object^ /*sender*/, System::EventArgs^
 /*e*/ )
   {
      textBox1->Text = CreateMultilevelIndentString();
   }


public:
   Form1()
   {
      System::Windows::Forms::Button^ button1 = gcnew System::Windows::Forms::Button;
      this->textBox1 = gcnew System::Windows::Forms::TextBox;
      this->SuspendLayout();
      this->textBox1->Anchor = (System::Windows::Forms::AnchorStyles)(System::Windows::Forms::AnchorStyles::Top
 | System::Windows::Forms::AnchorStyles::Bottom | System::Windows::Forms::AnchorStyles::Left
 | System::Windows::Forms::AnchorStyles::Right);
      this->textBox1->Location = System::Drawing::Point(
 8, 40 );
      this->textBox1->Multiline = true;
      this->textBox1->Name = "textBox1";
      this->textBox1->Size = System::Drawing::Size( 391,
 242 );
      this->textBox1->TabIndex = 0;
      this->textBox1->Text = "";
      button1->Location = System::Drawing::Point( 11, 8 );
      button1->Name = "button1";
      button1->Size = System::Drawing::Size( 229, 23 );
      button1->TabIndex = 1;
      button1->Text = "Generate string using
 IndentedTextWriter";
      button1->Click += gcnew System::EventHandler( this, &Form1::button1_Click
 );
      this->AutoScaleBaseSize = System::Drawing::Size( 5, 13
 );
      this->ClientSize = System::Drawing::Size( 407, 287 );
      this->Controls->Add( button1 );
      this->Controls->Add( this->textBox1
 );
      this->Name = "Form1";
      this->Text = "IndentedTextWriter example";
      this->ResumeLayout( false );
   }

};


[STAThread]
int main()
{
   Application::Run( gcnew Form1 );
}

J#

package IndentedTextWriterExample; 

import System.*;
import System.CodeDom.*;
import System.CodeDom.Compiler.*;
import System.ComponentModel.*;
import System.IO.*;
import System.Windows.Forms.*;

public class Form1 extends System.Windows.Forms.Form
{
    private System.Windows.Forms.TextBox textBox1;

    private String CreateMultilevelIndentString()
    {
        // Creates a TextWriter to use as the base output writer.
        System.IO.StringWriter baseTextWriter = new System.IO.StringWriter();

        // Create an IndentedTextWriter and set the tab string to use
 
        // as the indentation string for each indentation level.
        System.CodeDom.Compiler.IndentedTextWriter indentWriter 
            = new IndentedTextWriter(baseTextWriter, "  
  ");

        // Sets the indentation level.
        indentWriter.set_Indent(0);

        // Output test strings at stepped indentations through a 
        //recursive loop method.
        WriteLevel(indentWriter, 0, 5);

        // Return the resulting string from the base StringWriter.
        return baseTextWriter.ToString();
    } //CreateMultilevelIndentString

    private void WriteLevel(IndentedTextWriter
 indentWriter, int level,
        int totalLevels)
    {
        // Output a test string with a new-line character at the end.
        indentWriter.WriteLine("This is a test phrase."
            +" Current indentation level: " 
            + System.Convert.ToString(level));

        // If not yet at the highest recursion level, call this output
 method
        // for the next level of indentation.
        if (level < totalLevels) {
            // Increase the indentation count for the next level of
            // indented output.
            indentWriter.set_Indent(indentWriter.get_Indent() + 1);

            // Call the WriteLevel method to write test output for the
            // next level of indentation.
            WriteLevel(indentWriter, level + 1, totalLevels);

            // Restores the indentation count for this level after the
            // recursive branch method has returned.
            indentWriter.set_Indent(indentWriter.get_Indent() - 1);
        }
        // Outputs a string using the WriteLineNoTabs method.
        else {
            indentWriter.WriteLineNoTabs("This is a test phrase written with"
                +" the IndentTextWriter.WriteLineNoTabs method.");
        } 
        // Outputs a test string with a new-line character at the end.
        indentWriter.WriteLine("This is a test phrase."
            +" Current indentation level: " 
            + System.Convert.ToString(level));
    } //WriteLevel

    private void button1_Click(Object sender,
 System.EventArgs e)
    {
        textBox1.set_Text(CreateMultilevelIndentString());
    } //button1_Click

    public Form1()
    {
        System.Windows.Forms.Button button1 = new System.Windows.Forms.Button();
        this.textBox1 = new System.Windows.Forms.TextBox();
        this.SuspendLayout();
        this.textBox1.set_Anchor(((System.Windows.Forms.AnchorStyles)(
            System.Windows.Forms.AnchorStyles.Top 
            | System.Windows.Forms.AnchorStyles.Bottom 
            | System.Windows.Forms.AnchorStyles.Left 
            | System.Windows.Forms.AnchorStyles.Right)));
        this.textBox1.set_Location(new System.Drawing.Point(8,
 40));
        this.textBox1.set_Multiline(true);
        this.textBox1.set_Name("textBox1");
        this.textBox1.set_Size(new System.Drawing.Size(391,
 242));
        this.textBox1.set_TabIndex(0);
        this.textBox1.set_Text("");
        button1.set_Location(new System.Drawing.Point(11, 8));
        button1.set_Name("button1");
        button1.set_Size(new System.Drawing.Size(229, 23));
        button1.set_TabIndex(1);
        button1.set_Text("Generate string using
 IndentedTextWriter");
        button1.add_Click(new System.EventHandler(this.button1_Click));
        this.set_AutoScaleBaseSize(new System.Drawing.Size(5,
 13));
        this.set_ClientSize(new System.Drawing.Size(407,
 287));
        this.get_Controls().Add(button1);
        this.get_Controls().Add(this.textBox1);
        this.set_Name("Form1");
        this.set_Text("IndentedTextWriter example");
        this.ResumeLayout(false);
    } //Form1

    /** @attribute STAThread()
     */
    public static void main(String[]
 args)
    {
        Application.Run(new Form1());
    } //main
} //Form1

.NET Framework のセキュリティ

• SecurityPermission  (IndentedTextWriter のメンバを呼び出すためのアクセス許可) 要求値 : LinkDemand; 名前付きアクセス許可セット: FullTrust。
• SecurityPermission  (IndentedTextWriter クラスから派生させるためのアクセス許可) 要求値 : InheritanceDemand; 名前付きアクセス許可セット: FullTrust。

継承階層

System.Object
   System.MarshalByRefObject
     System.IO.TextWriter
      System.CodeDom.Compiler.IndentedTextWriter

スレッド セーフ

この型の public static (Visual Basic では Shared) メンバはすべて、スレッド セーフです。インスタンス メンバの場合は、スレッド セーフであるとは限りません。

プラットフォーム

Windows 98, Windows 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

開発プラットフォームの中には、.NET Framework によってサポートされていないバージョンがあります。サポートされているバージョンについては、「システム要件」を参照してください。

バージョン情報

.NET Framework
サポート対象 : 2.0、1.1、1.0

参照

関連項目
IndentedTextWriter メンバ
System.CodeDom.Compiler 名前空間